Ryzen 5800x3D Undervolt Easy Tutorial: Better temps, less power consumption, better CPU.

[Sambumbia-PR]

This amazing CPU runs too hot even with a good cooler. To my surprise doing an undervolt gave me better Cinebench 23 scores while running -12° cooler. Going to google and youtube searching for tutorials is kind of scattershot so I wanted to post the amalgamation of info found on how I made my CPU cooler and stable. Im no expert and all credit goes to the smarter individuals who kindly gave their time for these tutorials. I always welcome suggestions on how I can improve this undervolt method.


[Updated 12/04/22] Threadmarks added
[Updated 12/06/22] Changed CPPC Cores to Enabled

[This is focused on gaming]​

Things to Download:

OCBASE for Stress and Stability test
Cinebench 23 for benchmark and stress. My score is 15013 multicore for reference.
PBO2 Tuner- Shown as Debug-cli.7z
HWinfo Portable for monitoring sensors like temps and power draws.

Bios Prep [On MSI press the DEL key when powering up]​

Im using a MSI B550 Tomahawk and a $40 cooler with the latest BIOS. So, google your corresponding motherboard and get that latest BIOS.

Every motherboard should have these settings, they just have them in different places in your BIOS menu. Remember that if you do not see an option, there should be an Advanced mode and a OC Explore mode you can toggle to make those options appear:

1) XMP- Quite possibly the most important setting for a Ryzen CPU. Activate it and use that RAM to its better potential.

2) FLCK- Make sure half your XMP's Ram speed is chosen. In my case my XMP is 3200, so my FLCK is 1600. If found out recently that if I set my FLCK this way, the Infinity Fabric setting also changes to 1600, which is what we want.

3) CPU Voltage Offset (-): 0.05

This is a NEGATIVE voltage offset. Kept temps down for me, for others did nothing. This is located when you scroll down on that OC page pictured above. Click Auto on the CPU Offset Voltage (-) section and write 0.05:

4) Global C-State Control: Enabled
CPPC Enabled.
CPPC Cores Disabled.

5) Enable Rebar and Above 4G

Remember to save those BIOS settings. Come back here if you update the bios since it will delete your saves and return everything back to Default Values.


Lets truly undervolt the 5800x3D:​

Easiest Method: Kombo Strike 3- Just go to your overclocking options in BIOS and choose Kombo Strike: 3. Its basically an undervolt with a -30 Core Curve. If youre stable, youre done.

[Gamer's Nexus- Kombo Strike Video with explanations for those interested]​

Dont have Kombo Strike 3 or its too unstable? There is Another Method: PBO2 Tuner​

Download it: PBO2 Tuner- Shown as Debug-cli.7z. Change the folder name to PBO2 Tuner. Cut and paste the folder to your Program Files (x86) on your Drive.

Github with the instructions. Thanks to Prime07 and Tullo-x86.

How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/README.md at main · PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

Get the Most out of your 5800X3D using PBO Curve Optimizer! - PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

github.com

Instruction 5 is the one I use. I do not use the Burnt toast notifications part of the instructions on the Github. Just use the main PBO2.exe now (not the shortcut we will be creating next). You can try a curve of -10, -15, -20, -25 or go to the max of -30. Input your Curve value and hit apply.

Run the OCBase after every apply for a stability test. If the PC crashes, do not worry. Just hold the PC power button for a couple of seconds to shut it off and then power it up and try again with a lesser value.

Unfortunately, these changes do not stay after reboot. WE NEED to make sure PBO2 Tuner applies its settings every time we logon to our PC.

An easier alternative to the Task Scheduler in the Github tutorial is to just create a PBO2.exe shortcut. Cut/paste that shortcut to your startup folder. Should be located in:

(Your OS Main Drive letter):\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup
[you can copy paste this to your address bar]

​

Right click the shortcut and input your those Curve Cores values in theShortcut tab's Target: section. To make the changes permanent after every Reboot we need to change the Shortcut's properties by adding your core curve 8 times in the Target section like so: [SPACE] -20 -20 -20 -20-20 -20-20 -20

An example: the Target: should look like

"C:\Program Files (x86)\PBO2 Tuner for 5800X3D\PBO2 tuner.exe" -20 -20 -20 -20 -20 -20 -20 -20​

If its not saving after reboot, try opening the shortcut on the startup folder, input the curve values in the Curve tab again and applying your curve there.

Heres a youtube vid with this part of the tutorial. Give a like or subscribe to FR33THY if you found this to be useful.


View: https://youtu.be/ss-wft1iVjA?t=228

Test with OCBASE. Bench with Cinebench 23. Play some games. I recommend Destiny 2 or Warzone since they are so delicate to these manual changes.

If the shortcut method dosent work, use the Task Scheduler method (Instruction 6 on the github):
(thanks Mifec)

How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/README.md at main · PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

Get the Most out of your 5800X3D using PBO Curve Optimizer! - PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

github.com

You are done with Undervolting. Want to go even further beyond?

​

 

[Sambumbia-PR]

Lets Change those Power Limits for even better temps at a minimal cost to performance
​

So PBO2 Tuner has a limit tab. Its basically a manual ECO mode we can apply. Problem is that we need Task Scheduler to apply these limits every time we reboot since the Tuner resets every time.

1) You need to have a password on your Windows login. I personally dont like it and i ONLY tested this method by inputing a password. (Not a PIN or Biometric feature). So go to your Windows Settings and input one. Make sure remember, write it down or make it really easy.

2) So we should go to Instruction 6 on that Github Tutorial page I linked earlier so we can make that Task

How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/README.md at main · PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

Get the Most out of your 5800X3D using PBO Curve Optimizer! - PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

github.com

Only difference its that after some testing, I just added these Power Limit Values from this Reddit thread from user Draco25240. I was skeptical, but
these were the best values I tested:

120 PPT
75 TDC
110 EDC

So we change this part of the Action tab of the Github tutorial:

Notice that I added the limit values to the core curves followed by a 0. This 0 is the Default max Frequency as answered by anibalpedraza on the Github page.

So, for example, that should be Add Arguments (Optional): -30 -30 -30 -30 -30 -30 -30 -30 120 75 105 0

Congrats, your 5800x3D is efficient as fuck. But still, maybe

You DO NOT want to input your password every time you logon
​

I know, I know. but some people just shutdown their PC's everyday, dont care for privacy and cant be bothered to input a password. But we need a password to make this Task. So, heres a method to circumvent this:

Tutorial on how to have a password without having to input it each time you log on to windows by Brink on ElevenForums (Tenforums should have a similar tutorial)


TLDR: This only works with a password, <NOT A PIN OR BIOMETRIC FEATURE>

Search in Windows or Win + R: netplwiz

Youre a responsible person. i know you will remember this simple (for you) password, write it down, email it to yourself or make a text document upload to your cloud of choice.


Note: I use Kombo Strike 3 with the PBO2 Tuner task scheduler method for the power limits. Kombo strike 3 automatically inputs a -30 on all Core Curves on the PBO2 tuner.

And thats it. Seems like a lot, but its simple and worth it. I hope this helps anyone that wants a more power efficient CPU with a minimal performance cost. If something needs to be changed or threadmarked feel free to let me know.

 

[Pocky4Th3Win]

Would this work with the 5800X? I keep tuning mine to try to get better temps because I have it in an ITX build.

 

[Dec]

Been doing this since I received it a month and a bit ago. CPU runs toasty no matter the cooler due to the layered cache, but this helps a lot. Very impressive CPU so far.

 

[Nothing Loud]

Does this work with the 6800U? I'm using a OneXPlayer mini which has a very specific hardware design and I'm not certain I want to mess with the default factory settings from OXP because the parts aren't replaceable....it's just a handheld PC with 6800U chipset.

 

[LowParry]

Been meaning to do this with mine. Time to get it started then.

 

[Dec]

Would this work with the 5800X? I keep tuning mine to try to get better temps because I have it in an ITX build.

Click to shrink...

Does this work with the 6800U? I'm using a OneXPlayer mini which has a very specific hardware design and I'm not certain I want to mess with the default factory settings from OXP because the parts aren't replaceable....it's just a handheld PC with 6800U chipset.

Click to shrink...

I think the idea is that the 5800X3D is comprised of binned cores due to the voltage conscious design (mandated by the cache), meaning they can hit full frequency with lower voltage than stock. Other Zen 3 CPUs can do this as well, but you'll need to find a stable offset per-core and it'll take more time and be generally less impactful, based on lottery.

 

[rsfour]

Was thinking about upgrading to one from a 3600. Figured I'd just save up for a GPU instead, and wait for the AM5 mobo price drops along with the x3d chips for that.

Outstanding value with the 5800x3d though.

 

[Mifec]

That tut didn't work for me so I just did the scheduler method.

 

[raketenrolf]

I read somewhere I should try undervolting my 13600k, have to do more research on that. Thanks for the writeup.

 

[RayCharlizard]

Literally just picked my 5800X3D up from the mailbox, will take a look at this after I install it tomorrow.

 

[Lashley]

That tut didn't work for me so I just did the scheduler method.

Click to shrink...

scheduler method?

 

[Mifec]

scheduler method?

Click to shrink...

How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/README.md at main · PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

Get the Most out of your 5800X3D using PBO Curve Optimizer! - PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

github.com

 

[Lashley]

How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/README.md at main · PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

Get the Most out of your 5800X3D using PBO Curve Optimizer! - PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner

github.com

Click to shrink...

Thanks :D

 

[Mifec]

Thanks :D

Click to shrink...

Np buddy. Was pretty easy to follow and it just works.

 

[jkk411]

Was thinking about upgrading to one from a 3600. Figured I'd just save up for a GPU instead, and wait for the AM5 mobo price drops along with the x3d chips for that.

Outstanding value with the 5800x3d though.

Click to shrink...

Was having that same debate myself with my 3700x. I just realized they actually did add BIOS support for my B450 motherboard to handle these 5000 series chips so I could actually just swap it out without having to replace anything else. Feels like I'm seeing mixed messages about whether a 5900x or a 5800x3d would be the better swan song CPU to keep things going long term. I'm already on a 3080 GPU, so I feel like I'm going to be good there for a while.

 

[rsfour]

Was having that same debate myself with my 3700x. I just realized they actually did add BIOS support for my B450 motherboard to handle these 5000 series chips so I could actually just swap it out without having to replace anything else. Feels like I'm seeing mixed messages about whether a 5900x or a 5800x3d would be the better swan song CPU to keep things going long term. I'm already on a 3080 GPU, so I feel like I'm going to be good there for a while.

Click to shrink...

I think it boils down to what you're going to be doing, and games you're playing. I had to check too, because I wasn't exactly sure if I'd benefit from the 3d cache as well lol, or doing stuff that would fit the 5900 over the 800x3d.

Still using a 1070. But tbh, I haven't been playing enough PC games to justify the upgrade. I blame xbox gamepass.

 

[Sambumbia-PR]

Would this work with the 5800X? I keep tuning mine to try to get better temps because I have it in an ITX build.

Click to shrink...

The Bios prep should apply to all Ryzen CPUs. As for undervolting, Its easier with the 5800x in the Bios. Just change Precision Boost Overdrive part to manual and input custom PPT, TDC and EDC values.

Presision Boost Overdrive: Advanced
PBO limits: Manual
PPT: 95W
TDC: 60A
EDC: 90A
Curve optimiser: -10 or -20 all core

You could also try:

PPT: 110W
TDC: 90A
EDC: 100A
Curve optimiser: -10 all core

 

[Cutty]

Thanks for the guide, super helpful. I'm about to buy. I also have the same mobo.

Any opinions on whether a Corsair H100i Platinum SE AIO (240mm) is enough to cool this beast? With these tweaks set also, of course.

 

[Mesoian]

Thanks for the guide, super helpful. I'm about to buy. I also have the same mobo.

Any opinions on whether a Corsair H100i Platinum SE AIO (240mm) is enough to cool this beast? With these tweaks set also, of course.

Click to shrink...

I have the non platinum version and it works like a charm. You'll be fine.

 

[jkk411]

I think it boils down to what you're going to be doing, and games you're playing. I had to check too, because I wasn't exactly sure if I'd benefit from the 3d cache as well lol, or doing stuff that would fit the 5900 over the 800x3d.

Still using a 1070. But tbh, I haven't been playing enough PC games to justify the upgrade. I blame xbox gamepass.

Click to shrink...

Well, I pulled the trigger on the 5800X3D after looking at some more benchmarks/reviews. Did seem like a pretty significant upgrade over the 3000 series chips and without having to invest in anything else I figure it's a good enough excuse to tinker with my PC which I haven't done in a couple years. I was definitely finding myself drifting from the PC when the new consoles launched, but I've been coming back to it more and more lately.

 

[rybrad]

I looked at doing this earlier when I got my CPU and saw some people warning about clock stretching even when the undervolt seems stable. I tried monitoring it with HWInfo but couldn't noitce it. Is there an easy way to test for clock stretching to ensure everything is solid or is it as simple as if Cinebench score doesn't degrade then it's fine?

 

[chrominance]

I don't really understand. The Gaming Nexus video linked in the OP says Kombo Strike 3 had a negligible performance improvement and a minor INCREASE in temperature and power consumption in all the games they tested. I see there are some other things being modified, though not all of them will need changing (for example, a bunch of people may have already activated resizable BAR and the above 4G settings because of the recent Nvidia drivers showing gains in CPU-limited scenarios). So what's the actual special sauce here?

 

[Sambumbia-PR]

I don't really understand. The Gaming Nexus video linked in the OP says Kombo Strike 3 had a negligible performance improvement and a minor INCREASE in temperature and power consumption in all the games they tested. I see there are some other things being modified, though not all of them will need changing (for example, a bunch of people may have already activated resizable BAR and the above 4G settings because of the recent Nvidia drivers showing gains in CPU-limited scenarios). So what's the actual special sauce here?

Click to shrink...

Bios updates and the negative CPU Offset Voltage.

 

[chrominance]

Bios updates and the negative CPU Offset Voltage.

Click to shrink...

How do either of those things lead to BETTER performance, though? BIOS updates are pretty nebulous and seem to only apply to select MSI boards if we're talking Kombo Strike specifically. Not sure how lowering CPU voltage improves performance at all.

Also, if it's the CPU offset voltage that's responsible for the power/heat improvements, wouldn't it be better to just do that and avoid Kombo Strike 3, given the results in the Gaming Nexus video?

I'm not trying to be argumentative, because I've seen Reddit posts backing up your claims; it's just that none of them explain what the deal is with the improvements and I like to understand how each bit affects the whole.

 

[GameAddict411]

I would like to note that undervolting isn't just a free reduction in power while maintaining performance. It definitely increase system instability. It's why AMD and Intel are always more conservatives with their voltage settings out of the box. They would rather their CPUs consume more power and produce more heat than have crashing issues for the users. My experience with undervolting is that it heavily depends on the programs and games you are using. In some cases the undervolt is not an issue for over 97% of all the stuff you use. But there is always that one program that exhibits instability with undervolt.

 

[LowParry]

That PBO2 trick with adding the -20 in the command line of the shortcut properties isn't applying. Was going off by that video and doesn't seem to work after a reboot.

 

[overthewaves]

I undervolt mine through bios. Just matched the eco mode settings of the 5800x. Runs cool and doesn't go above above 90w.

 

[Cutty]

I have the non platinum version and it works like a charm. You'll be fine.

Click to shrink...

Thank for the reply. What kind of temps are you getting while gaming?

 

[Mesoian]

Thank for the reply. What kind of temps are you getting while gaming?

Click to shrink...

Depends on the game. Spiderman mm ran kind of cool around 45-50, but something like modded Skyrim, the riftbreaker, or satisfactory, games that put a lot of strain on the CPU, can see it rose to mid 60s.

 

[Dec]

How do either of those things lead to BETTER performance, though? BIOS updates are pretty nebulous and seem to only apply to select MSI boards if we're talking Kombo Strike specifically. Not sure how lowering CPU voltage improves performance at all.

Also, if it's the CPU offset voltage that's responsible for the power/heat improvements, wouldn't it be better to just do that and avoid Kombo Strike 3, given the results in the Gaming Nexus video?

I'm not trying to be argumentative, because I've seen Reddit posts backing up your claims; it's just that none of them explain what the deal is with the improvements and I like to understand how each bit affects the whole.

Click to shrink...

Modern GPU and CPU boost until a limit is reached; voltage, heat, or power. Most are limited by voltage, not by heat or power. There is a frequency curve that says "to hit this frequency use this voltage", but it is sometimes generous with the voltage to account for manufacturing variance. By undervolting with an offset you are telling the GPU or CPU to use less voltage at each performance step but try to attain the same frequency.

Voltage also is heat, lowering voltage also lowers heat.

Traditional overclocking isn't much different, it's just trying to push the frequency higher while staying within the voltage limit, rather than trying to maintain the base frequency with less voltage (functionally the same thing though).

The reason BIOS updates affect performance though is these voltage frequency curves and behaviours can be adjusted and fine-tuned within AMD's SMU.

Edit: In this specific case the 5800X3D has a low voltage limit, and load is not equal, the power pushed through the CPU is low when load is single-threaded, so voltage can be high. Single-threaded workloads will boost high. Multi-core demands much more power, which is bad when voltage is high, so the voltage limit is much lower in a multi-core load. The 5800X3D will not reach its peak frequency when in a multi-core load with the stock curve, but it can reach it or get much closer when undervolted. So in multi-core you can get better performance (from more consistently high frequency) and better temps (from lower voltage).

Not an expert, but this is my understanding of it!

 

[Cutty]

Depends on the game. Spiderman mm ran kind of cool around 45-50, but something like modded Skyrim, the riftbreaker, or satisfactory, games that put a lot of strain on the CPU, can see it rose to mid 60s.

Click to shrink...

Wow that seems pretty low/cool compared to other reports online!

I'm coming from a Ryzen 3600 so I'm used to a nice and quiet and cool setup. Was initially put off by the reports of heat but I think I'll go for it.

 

[chrominance]

Modern GPU and CPU boost until a limit is reached; voltage, heat, or power. There is a frequency curve that says "to hit this frequency use this voltage", but it is sometimes generous with the voltage to account for manufacturing variance. Most are limited by voltage, not by heat or power. By undervolting with an offset you are telling the GPU or CPU to use less voltage at each performance step but try to attain the same frequency.

Voltage also is heat, lowering voltage also lowers heat.

Traditional overclocking isn't much different, it's just trying to push the frequency higher while staying within the voltage limit, rather than trying to maintain the base frequency with less voltage (functionally the same thing though).

The reason BIOS updates affect performance though is these voltage frequency curves and behaviours can be adjusted and fine-tuned within AMD's SMU.

Edit: In this specific case the 5800X3D has a low voltage limit, and load is not equal, the power pushed through the CPU is low when load is single-threaded, so voltage can be high. Single-threaded workloads will boost high. Multi-core demands much more power, which is bad when voltage is high, so the voltage limit is much lower in a multi-core load. The 5800X3D will not reach its peak frequency when in a multi-core load with the stock curve, but it can reach it or get much closer when undervolted. So in multi-core you can get better performance (from more consistently high frequency) and better temps (from lower voltage).

Not an expert, but this is my understanding of it!

Click to shrink...

Ah, okay, I think that makes sense. That would explain why low 1% framerates seemed to improve quite a bit, I think? Thanks for the explainer!

 

[Sambumbia-PR]

That PBO2 trick with adding the -20 in the command line of the shortcut properties isn't applying. Was going off by that video and doesn't seem to work after a reboot.

Click to shrink...

If you made the PBO2.exe shortcut and cut/paste it in the startup folder it should work. You can check your startup programs by opening your task manager by right clicking your taskbar or CTRL + ALT + DEL, go to the startup apps section and check that PBO2 is enabled.

At first i made a mistake of not putting a space after the "address" part in the target section. Mine looked like this:

"C:\Program Files (x86)\PBO2 Tuner for 5800X3D\PBO2 tuner.exe" -20 -20 -20 -20 -20 -20 -20 -20

If that does not work, try the Task Scheduler part.

 

[Deathglobe]

I just bought one of these to so thanks. Question though if I set the min power draw to 5% and max power to 98% in power plan does that work the same ?

 

[Grassy]

The Bios prep should apply to all Ryzen CPUs. As for undervolting, Its easier with the 5800x in the Bios. Just change Precision Boost Overdrive part to manual and input custom PPT, TDC and EDC values.

Presision Boost Overdrive: Advanced
PBO limits: Manual
PPT: 95W
TDC: 60A
EDC: 90A
Curve optimiser: -10 or -20 all core

You could also try:

PPT: 110W
TDC: 90A
EDC: 100A
Curve optimiser: -10 all core

Click to shrink...

Is any of that really necessary though? I've just been using AMD's Ryzen Master software for undervolting my 5800X with the "Balanced" Win 10 power plan and haven't touched any of those BIOS settings, other than enabling XMP of course. My temps are really good so I'm interested to know what I'm missing here.

 

[Sambumbia-PR]

Is any of that really necessary though? I've just been using AMD's Ryzen Master software for undervolting my 5800X with the "Balanced" Win 10 power plan and haven't touched any of those BIOS settings, other than enabling XMP of course. My temps are really good so I'm interested to know what I'm missing here.

Click to shrink...

Ryzen Master is great, the Bios method is just another way to the same result. Alongside the Bios Prep settings I put in the OP, it gave me better temps and a negligible performance cost when gaming with on a 5800x. I dont think youre missing much. Feel free to test, you can always go back.

My way is just another and found going into bios easier. I use a custom "ultimate performance mode" in the Power Options. The only custom thing is that I changed the processor processor state minimum to 1%. Its another way of balancing things.

I just bought one of these to so thanks. Question though if I set the min power draw to 5% and max power to 98% in power plan does that work the same ?

Click to shrink...

Have not tested that. Sorry.

 

[Pargon]

2) FLCK- Make sure half your XMP's Ram speed is chosen. In my case my XMP is 3200, so my FLCK is 1600. If found out recently that if I set my FLCK this way, the Infinity Fabric setting also changes to 1600, which is what we want.

Click to shrink...

As I understood it, it's actually better to run the highest FCLK that you can, if your system is at 3200 MT/s or lower - since most Zen 3 CPUs should be able to use at least 1800 MHz, and that 200MHz+ clock advantage outweighs the benefit of 1:1 FCLK:MCLK.

 

[sarquiss_]

Are there any mirrors for PBO Tuner 2? Overclockers.net are having server issues. I was able to underclock my 5800x3D via the bios but would like to further optimize the CPU

EDIT: Here is a mirror in case anyone else needs one

https://drive.google.com/file/d/1te4IdSR5negNR5H_vqYt_izJHVa6zb36/view

EDIT #2: I've been trying to get the app to launch via Task Scheduler but no luck. The task just gets stuck at "running" even if I manually trigger it. I'm just trying to set the Power Limits

 

[GReeeeN]

None of the other tutorials I've seen mention the CPU Voltage Offset (-): 0.05, is this required?

I've also seen some guides recommended CPPC to be on but CPPC Preferred Cores to be off.

 

[craven68]

I should do something similar with my 5900x ? bought recently a 4000mhz ddr4 kit at 32giga, and i have a pretty good motherboard for oc ( the b550 aorus master )

 

[Sambumbia-PR]

As I understood it, it's actually better to run the highest FCLK that you can, if your system is at 3200 MT/s or lower - since the most Zen 3 CPUs should be able to use at least 1800 MHz, and that 200MHz+ clock advantage outweighs the benefit of 1:1 FCLK:MCLK.

Click to shrink...

Interesting. I will test that and report back when I have some time this week.

None of the other tutorials I've seen mention the CPU Voltage Offset (-): 0.05, is this required?

I've also seen some guides recommended CPPC to be on but CPPC Preferred Cores to be off.

Click to shrink...

I did it for my system since it dropped my temps while not having a performance difference. You could always set it to Auto.

Yeah, theres a lot of CPPC on vs off on the web. I chose to leave it off cause it helped me with 1% lows in games.

I should do something similar with my 5900x ? bought recently a 4000mhz ddr4 kit at 32giga, and i have a pretty good motherboard for oc ( the b550 aorus master )

Click to shrink...

Easiest way is to try the Bios prep in the OP and let Precision Boost on Auto. If you want to test further try the eco modes.

 

[rybrad]

Messed around with this for a bit this weekend and setting a -30 on all cores and adjusting the power limits puts me at 80° in Cinebench while stock settings in at 72°. Scored about 10% higher than stock but not sure the increased temps are worth it for me.

 

[Soda]

Messed around with this for a bit this weekend and setting a -30 on all cores and adjusting the power limits puts me at 80° in Cinebench while stock settings in at 72°. Scored about 10% higher than stock but not sure the increased temps are worth it for me.

Click to shrink...

Honestly, I'm not sure why OP has folks doing +0.05 offsets and messing with power limits. If you're setting -20 to -30 all cores you should 100% of the time see the same or lower temps and usually the same or slightly better performance. Most of the rest of the OP is excessive, either making no difference, or possibly having a negative trade-off.

 

[Dec]

Honestly, I'm not sure why OP has folks doing +0.05 offsets and messing with power limits. If you're setting -20 to -30 all cores you should 100% of the time see the same or lower temps and usually the same or slightly better performance. Most of the rest of the OP is excessive, either making no difference, or possibly having a negative trade-off.

Click to shrink...

Yea I've just -30 all cores and called it a day personally.

 

[rybrad]

Honestly, I'm not sure why OP has folks doing +0.05 offsets and messing with power limits. If you're setting -20 to -30 all cores you should 100% of the time see the same or lower temps and usually the same or slightly better performance. Most of the rest of the OP is excessive, either making no difference, or possibly having a negative trade-off.

Click to shrink...

I skipped everything except setting cores to -30 and the power limits as I had been working on this a bit previously and those were the main things people mentioned. If I do -30 with default power limits I definitely get a temp increase but it boosts to 4425 rather than my usual 4100.

 

[Dec]

I skipped everything except setting cores to -30 and the power limits as I had been working on this a bit previously and those were the main things people mentioned. If I do -30 with default power limits I definitely get a temp increase but it boosts to 4425 rather than my usual 4100.

Click to shrink...

Very strange, voltage should be lower and CPU should pull ~10W+ less. Should mean lower temps not higher.

I guess I would use hwinfo64 and track differences with both to see why this is happening.

 

[Sambumbia-PR]

Honestly, I'm not sure why OP has folks doing +0.05 offsets and messing with power limits. If you're setting -20 to -30 all cores you should 100% of the time see the same or lower temps and usually the same or slightly better performance. Most of the rest of the OP is excessive, either making no difference, or possibly having a negative trade-off.

Click to shrink...

Its a negative offset of 0.05. If you find it excessive and just want to put a -20 or -30 then good for you. Do what works for you. Im not making anyone doing anything, just the cataloguing the method that gave me good temps and performance on my 5800X3D.

The methods I put in the OP gave me better results on my benchmarks and games and i just put the info in one place.

 

[rybrad]

Very strange, voltage should be lower and CPU should pull ~10W+ less. Should mean lower temps not higher.

I guess I would use hwinfo64 and track differences with both to see why this is happening.

Click to shrink...

I was using Ryzen master to watch temps so I'll try hwinfo64 instead and see if it looks any different. I'm a bit perplexed about the results as well as everywhere I look people are talking about the big temp drops they got.

 

[Dec]

I was using Ryzen master to watch temps so I'll try hwinfo64 instead and see if it looks any different. I'm a bit perplexed about the results as well as everywhere I look people are talking about the big temp drops they got.

Click to shrink...

They will definitely report temps differently, but hwinfo will track everything over-time and log it. Make sure voltage changes when you apply the offset.