| Bofferbrauer2 said: If we are realistic, then this leak is a hoax, pure and simple. 64CU is the technical limit of GCN, and there's no known way around this, so 64CU at 1500Mhz would be the only option in your opinion. Even in a 7nm Navi like that would consume around 250W without even counting the CPU, RAM or any other part in the console. |
It's true that AMD hasn't released a GCN based GPU with more than 4 SEs or 64 CUs and there probably is a technical reason for that. However, scaling up the amount of SEs/CUs seems like a smaller change than for instance adding the FP16 ISA/foveated rendering or unifying the CB/DB caches with the L2 cache, which has been done between various iterations of the GCN architecture. I believe the 64 CU limit is located in some part of the GPU front-end and the main reason for not crossing that limit so far has probably been more due to the die size and power consumtion prohibiting it anyway, than technical hurdles to redesign the GPU front-end.
Though, I agree with you that the leak most likely is a hoax. For instance, I find it very unlikely with a 22Gbps GDDR6 memory speed, a 320bit memory bus and 20-24GB memory. AFAIK, the GDDR6 specifications only support up to 16Gbps. Sure, the specifications has some leeway and I believe Micron already is selling 18Gbps versions, but Sony has been quite conservative when it comes to memory speeds before and I find it very unlikely they would take the risk of overclocking the memory so high on a mass market product like the PS5.
Last edited by Straffaren666 - on 14 March 2019
