| chakkra said: You want to hear my opinion on the matter? PS5 designers, on the other hand, concluded that a SSD at 5.5GB is needed for the amount of data that a GPU with 36 CUs x2.2GHz and a 8x Zen 2 Cores at 3.5GHz are going to be able to process/generate. |
That is nonsense.
The whole hardware chain of <data from ssd at speed x> -> <data in gpu memory at speed x> is incredibly complex if you look at the Cerny slides. The work on all the extra processors was started at the beginning of the PS5 development (maybe even before). That was long before cpu and gpu geometries were set so these numbers were totally unknown. What they could do is estimate the minimum bandwidth required by analyzing test game setups.
The speed of 5.5GB/s was chosen to be high enough to do the job while at the same time it does not require particularly expensive chips. A 12 lane ssd could run at much higher speeds but at much hotter temperatures (a key element to watch over).
