Squilliam said:
There is one. It's just too slow to be particularly useful. The quantity of memory a console can actually make use of per frame is the bandwidth divided by the number of frames per second so whilst you could have 8GB of DDR3 the effective quantity of memory you could use per frame would be something like: 12GB/S /30FPS = 0.4GB which is an absolute maximum if the bandwidth was say the same as the Wii U. In the best case scenario the Wii U can address 0.4GB assuming perfect utilization however the real world figure is likely less than half of that. If the consoles are going to have 8GB to really make use of it they need a LOT of memory bandwidth to go with it. |
Not necessarily. They could go the Wii U route and sacrifice high bandwidth for low latency using eDRAM to avoid bottlenecking issues.
I still say that 16 x chips is too much, we'll probably see 12 in the 720 and 8 in the PS4 giving 6GB and 4GB respectively. And I'm still pretty certain it'll be DDR3 and not DDR4 if they want to keep costs down and have high enough yields to make a 2013 launch possible. Both platform holders know that any retail price bigger than 400 pounds/dollars could cause them problems with getting marketshare.
