What’s the difference between the PS5 SSD and the Series X SSD?

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Ivanovic

Member
Oct 28, 2017
372
So as a complete tech noob i keep hearing how the PS5 SSD will revolutionise gaming but the Series X also has one so how is the PS5 version somehow different and supposedly superior?
 

Kida

Member
Oct 27, 2017
546
So as a complete tech noob i keep hearing how the PS5 SSD will revolutionise gaming but the Series X also has one so what the PS5 version somehow different and supposedly superior?
Xbox Series X has a really fast SSD that is game changing. PS5's is twice as fast as that.
 

nib95

Banned
Oct 28, 2017
12,967
PS5: Custom 825GB SSD Storage Drive
IO throughput (speed) is 5.5GB/S (Raw), 8-9GB/S (Compressed).

Xbox Series X: 1TB NVMe SSD Storage Drive
IO throughput (speed) is 2.4gB/s (Raw), 4.8GB/s (Compressed).

The PS5's drive is much faster basically. By around 129%.
 

Nostradamus

Member
Oct 28, 2017
1,137
One is faster than the other and I/O also potentially faster (I don’t think we have all details from XSX yet).
 

ohitsluca

Member
Oct 29, 2017
425
High read/write speeds are great in theory, but often are bottlenecked by other factors. SONY created a custom chip to eliminate those other bottlenecks and make the SSD perform as fast as possible. This means that, if what they are saying is true, it is capable of much higher real world speeds than MS's SSD.
 

Deeke

Member
Oct 25, 2017
559
United States
They're both similar. They both are customized PCIe 4.0 NVMe M.2 SSDs, they both utilize hardware based decompression, and they both run on x4 lanes. They're also both specifically made for their respectively scaled AMD chips.

The PS5'S SSD is 825GB for a reason: to reduce costs.

Sony made a custom 12 channel flash controller and is using faster flash with less capacity (both of these are likely Samsung). Games have access to 6 channels, which allows more two more lanes than the SSD supports.

As such the PS5 SSD can hit 5.5GB/sec when processing uncompressed data. That's the rate in which raw, readily available assets can be loaded into the RAM->CPU->GPU pipeline for processing.

The Xbox Series X likewise uses a similar method, but MS built a while new DirectX storage API to accelerate and streamline data streaming.

Its part of the new Velocity Architecture that binds hardware and software.

With DirectStorage and the 1TB SSD, the XSX can push 2.4GB/sec decompressed data streams. It's slower, but the optimized software stack might be much more tightened than Sony's.

MS is also enabling custom installation of games on a system level. Devs can choose whether or not they support it.
 

Timlot

Banned
Nov 27, 2019
134
They're both similar. They both are customized PCIe 4.0 NVMe M.2 SSDs, they both utilize hardware based decompression, and they both run on x4 lanes. They're also both specifically made for their respectively scaled AMD chips.

The PS5'S SSD is 825GB for a reason: to reduce costs.

Sony made a custom 12 channel flash controller and is using faster flash with less capacity (both of these are likely Samsung). Games have access to 6 channels, which allows more two more lanes than the SSD supports.

As such the PS5 SSD can hit 5.5GB/sec when processing uncompressed data. That's the rate in which raw, readily available assets can be loaded into the RAM->CPU->GPU pipeline for processing.

The Xbox Series X likewise uses a similar method, but MS built a while new DirectX storage API to accelerate and streamline data streaming.

Its part of the new Velocity Architecture that binds hardware and software.

With DirectStorage and the 1TB SSD, the XSX can push 2.4GB/sec decompressed data streams. It's slower, but the optimized software stack might be much more tightened than Sony's.

MS is also enabling custom installation of games on a system level. Devs can choose whether or not they support it.
Why thank you. You described each very well.
 

Rikimaru

Member
Nov 2, 2017
249
They're both similar. They both are customized PCIe 4.0 NVMe M.2 SSDs, they both utilize hardware based decompression, and they both run on x4 lanes. They're also both specifically made for their respectively scaled AMD chips.

The PS5'S SSD is 825GB for a reason: to reduce costs.

Sony made a custom 12 channel flash controller and is using faster flash with less capacity (both of these are likely Samsung). Games have access to 6 channels, which allows more two more lanes than the SSD supports.

As such the PS5 SSD can hit 5.5GB/sec when processing uncompressed data. That's the rate in which raw, readily available assets can be loaded into the RAM->CPU->GPU pipeline for processing.

The Xbox Series X likewise uses a similar method, but MS built a while new DirectX storage API to accelerate and streamline data streaming.

Its part of the new Velocity Architecture that binds hardware and software.

With DirectStorage and the 1TB SSD, the XSX can push 2.4GB/sec decompressed data streams. It's slower, but the optimized software stack might be much more tightened than Sony's.

MS is also enabling custom installation of games on a system level. Devs can choose whether or not they support it.
Some incorrect info.
PS5 storage subsystem and filesystem is VERY tight and tailored for SSD: https://twitter.com/rygorous/status/1240333634332053504
Xbox Raw bandwidth is 2.4
PS5 is 5.5
Both use hw compression, but Xbox uses zlib (like PS4) with up to 6gbps max throughput while PS5 uses Kraken with up to 22gbps throughput.
Of course it is only for highly compressable data.
Also Kraken is more efficient (Cerny said 10% better compression).
 

tapedeck

Member
Oct 28, 2017
2,164
They're both similar. They both are customized PCIe 4.0 NVMe M.2 SSDs, they both utilize hardware based decompression, and they both run on x4 lanes. They're also both specifically made for their respectively scaled AMD chips.

The PS5'S SSD is 825GB for a reason: to reduce costs.

Sony made a custom 12 channel flash controller and is using faster flash with less capacity (both of these are likely Samsung). Games have access to 6 channels, which allows more two more lanes than the SSD supports.

As such the PS5 SSD can hit 5.5GB/sec when processing uncompressed data. That's the rate in which raw, readily available assets can be loaded into the RAM->CPU->GPU pipeline for processing.

The Xbox Series X likewise uses a similar method, but MS built a while new DirectX storage API to accelerate and streamline data streaming.

Its part of the new Velocity Architecture that binds hardware and software.

With DirectStorage and the 1TB SSD, the XSX can push 2.4GB/sec decompressed data streams. It's slower, but the optimized software stack might be much more tightened than Sony's.

MS is also enabling custom installation of games on a system level. Devs can choose whether or not they support it.
God damn..excellent post..I don’t know Jack shit about SSD’s but can totally understand this. Props.
 

Transistor

The Walnut King
Moderator
Oct 25, 2017
14,151
Washington, D.C.
We have a thread open for PS5 / Series X comparisons. This question can be asked there:

 
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