Squilliam on 06 January 2009
I cannot comment on the fill rates, however it is likely that the consoles will use commodity memory standard such as GDDR5. Modern graphics cards on a 256 bit bus are expected to realise about 160GB per second bandwidth, as modern GPUs aren't bandwidth contstrained assuming this remains the standard or something similar, 80GB-120GB per second would be a decent estimate on a 128bit bus and would more than satisfy the requirements of a console of that era.
The problem is, you're making the assumption that the next generation consoles would have the same CPU + GPU architecture. They could instead use either a unified design or a CPU/GPU multichip module and stitch them together through a single unified bus.
Tease.
