No I am talking about in a split ram set up. CPU has a direct bus to DDR5 While GPU has direct bus to GDDR. So in that set up there shouldn't be any contention for the bandwidth. DDR5 ram is much cheaper than the newer GDDR ram forms.No this is not correct there isnt a distinct pool of ram for CPU and GPU they share the same physical memory. I've come to conclusion most people dont know what unified memory is and its benefits. I have heard Moore's law is dead claim Series X doesnt have unified memory as well which is shocking because he's a tech Youtuber. Yes PC memory subsystem works fine but there are benefits of using unified memory especially with closed systems like consoles.
Currently in the xbox series you have 16gigs of ram for both CPU/GPU. But in a split ram console you could do 8-16gigs of DDR5 and 16-24gigs of GDDR ram. It should work out to be a lot cheaper for the ram than 32gigs of gddr ram
Like I said , I am talking about a split pool set up.Again there is no distinction between CPU and GPU memory with unified memory architecture. Only difference(A difference MS will likely not repeat) exists on the Series X is there is lower bandwidth interleaved memory on the Series X with 6GB of the GDDR modules having access to only 336GB/s of memory bandwidth but this 6GB of physical memory along with the 10GB of interleaved high memory bandwidth can both be accessed by both the CPU and GPU. You dont have this contrivance on the PS5 because they went with 8 2GB modules on a 256 bit bus at 14Gb/s per pin for 448GB/s so no interleaving to achieve different memory bandwidth for different ram modules. I strongly recommend reading up on the advantages and disadvantages of a unified memory architecture. You get some latency pros and cons as well with going with unified memory. But the overwhelming empirical data supports this approach for consoles.