Which one? Navi 10? It will be damn close if it doesn't beat it on perf. Especially on perf/Watt due to target TDP.
Notice how the Polaris parts have the same power efficiency of Vega 64? That tells you the performance of Vega is actually quite better than Polaris, and if you ramped it down to similar power levels, it should beat it more handily on perf/Watt. That's the exact territory Navi will live in, except with more arch benefits and the 7nm jump. You can already see the 7nm jump in Vega 7, but that's again pegged to the high end TDP, which obscure the perf/Watt gains possible.
I keep hearing people say it'll be as powerful as an rtx 2070/gtx 1080 but in reality for $400, 1660ti at best but that is a better performer than a gtx 1070 with less watts.
Nope. That's for $250 according to Jim (AdoredTV).
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