ShintaiDK
Lifer
- Apr 22, 2012
- 20,378
- 145
- 106
On their graphic, Vega has a slightly higher performance per watt compared to Polaris. Perhaps that's simply because it's HBM?
HBM is one reason. But bigger chips tends to be more efficient. If you exclude the 750/750TI and 270X that seems to go against the stream. Then 980 and 980TI got higher performance/watt than 950 and 960 for example. Its a bit more messy on the AMD front due to much more random uarchs in the SKU lines. But 290/290X beats 280X and 285 as well.
And remember its an unmarked chart. It could be for anything. Compute, 4K res, VR etc.