| Bofferbrauer2 said: As if you weren't aware that GPU get clocked down to fit into the tight power consumption maximals of a console. Don't expect the PS5 to come with less than 56 CU, but higher clock speeds instead. |
Uh. What? It's a balancing act. So yes I am aware.
Increasing the size of the chip by adding more CU's directly increases power consumption as every single transistor you add requires energy.
There is a reason why nVidia with Pascal decided not to blow out transistor counts and instead focused on driving the clockrates of it's chips up.
It was what offered the best performance/power consumption for a given chip size.
At 7nm (I hate using that term, because it's not a real 7nm process) you can use the extra TDP to drive up clock rates. (Provided you have the appropriate layout, transistor types etc'.)
| Bofferbrauer2 said: That won't work out unless Navi base clock is above 1800Mhz, which I very much doubt. |
Why not?
There are Pascal chips that boost to 2ghz at 14nm. And that is before overclocking.
| Bofferbrauer2 said: To get enough distance between themselves and the One X (40 CU @1172Mhz), 56 CU will already have to come with about 1500Mhz. That's already close to max clock rate for Vega and in 14nm definitely too much power consumption and heat for a console. In 7nm this should be much more feasible but will still draw a lot of power. |
The Xbox One X is using an older Polaris derived part.
As someone who has a Polaris GPU and the Xbox One X I can assure you they are both inefficient, slow, mid-range hardware.
I mean shit... Neither have draw stream rasterization, primitive shaders or rapid packed math... Graphics Core Next in the console is simply slow, old and inefficient, The Xbox One X is no exception. - It is not overtly difficult to make big performance gains.
Heck AMD haven't even enabled draw stream rasterization in it's drivers and relegated primitive shaders for something for developers to opt-into via an API with Vega, those are efficiency gains going to waste.
Fact is... 64 CU's are enough for next gen, with ample clock rate and architectural refinement.
| Bofferbrauer2 said: @bolded: Those are part of the Compute Units (unless you meant CPU Cache too) |
False.
I suggest you look at this layout.

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