snowdog on 05 May 2013
Developers will always prefer less latency. GDDR5 was a bit of an odd choice, particularly when it's shared with the system. It's pointless having a superior bandwidth when the CPU, GPU, OS take extra time to get the data needing to be processed. Despite the far superior bandwidth developers are more likely to encounter bottlenecks when developing for the PS4. Both Nintendo and Microsoft opted for their memory combinations for good reason.
Edit: And they're using DDR3, not GDDR3. The former has less latency than the latter, and the latter isn't being produced any more afaik.
