Sony is focusing on Hard-Core Gamers for PS5

[drkohler]

Pemalite said:

From what I saw of Scarlett, it seems Microsoft will be using a mix of 2GB and 1GB chips, so we can assume 24GB is in for Scarlett... However, 8GB of that will only operate at half the bandwidth, so if Scarlett employs 14Gbps GDDR6 on a 256bit bus, then that last 8GB will be 224GB/s of bandwidth whilst the rest of the 16GB is 448GB/s.
It does mean we are probably looking at 8GB for the OS/Background duties.

Sony could be taking a similar approach. Or they may opt for only 16GB of GDDR6... Or 16GB GDDR6+8GB DDR4.

You are not making sense on the memory. Clamshell or not, memory bus speed is memory bus speed.

I highly doubt anyone is going for mixed memory. You are just asking for engineering trouble doing that.