| RazorDragon said: First the Wii U could handle 480SPs based on the die size alone, that's counting the GPU along with the eDRAM. Now it can't handle 320SP in the same space that it was thought it would pack 480SPs, and could only handle 160 SPs? That's not possible, only if that GPU was made using the 90nm process, you know, the same one used in 2006 to make the Wii. So, no, no way it's less than 320 SPs. |
I think 480SPs was always a bit of stretch (but hoped for), after the first measurements...
480:24:8 @40nm GPU is 118mm^2
400:20:8 @ 40nm GPU is 104mm^2
I'm still thinking it's 320SPs part, that is hindered by memory architecture. For comparision, 5550 (320:16:8 part), same clock (550MHz), different memory bandwith:
5550 GDDR5/128bit (51.2GB/s) - 27VP
5550 DDR3/128bit (25.6GB/s) - 21.8VP
5550 DDR2/128bit (12.8GB/s, same as suggested WiiU's) - 16.5VP
X360 - something around 13-14VP
Rumoured PS4 GPU - around 140VP
