| Intrinsic said: People need to get this straight. The PS4 "GPU" is 18CUs @1.8+TF. PS4k "GPU" 36CUs @ 4.1TF (more compute units and higher clock) XB1 GPU is 12CUs @ 1.2+TF If the XB1.5 GPU is going to be 6TF it would need to be packing 56 compute units!!!!!! the ONLY card AMD has that has that many compute units is the R9 Fury. And that "GPU" costs $550. $550. And we have not even started talking about the CPU. I think some people need to get a little realistic. |
Plain no!
1. XB1 GPU is 1.31 TFLOP/s (12 CU's, 853MHz)
2. PS4 GPU is 1.84 TFLOP/s (18 CU's, 800MHz)
3. PS4 Neo is 4.19 TFLOP/s (36 CU's, 911MHz)
So we already see it scales with clock and Compute Units/number of shaders.54% m
Basically with AMD it's shaderunits * 2 * Clock in GHz. And every compute unit has 64 shaders.
So to hit 6GFLOP/s we could go with a little less than 50% more shader units than Neo, a bit less than 50% more clock ora mix of both.
50% more shaders than PS4 would be 48 compute units. That would be more than Hawaii/Grenada has and it doesn't really make sense to cut back Fiji that much. But it's pretty much safe that there will be a smaller Vega version, so we could already have a fit here.
At the same time we do already know that AMD is clocking Polaris much higher than Sony Right now 1266MHz. And we do know that Polaris 10 full build has 40 compute units. Doing the math that would lead us to 54% more GPU power than PS4 Neo being absolutely possible with a complete Polaris 10.
Even a 36 CU Polaris 10 with 1.3 GHz would be enough to reach those 6GFLOP/s. And those clocks don't seem to be an issue with 14/16nm FinFET.
While i actually don't believe we'll see that and Xbox 1.5 would be closer to Neo, both likely coming in 2017, it' not much of an issue. And you really don't need Fiji for that.
