Cashless Quadcore CPUs

Last month AMD launched their quad core CPUs without level three cash. These CPUs offer 10% lower performance at a 30% lower price with 20% less power. They almost perform on par with the Level 3 cash version expect for games and a few other applications.

Considering that the performance per watt is 10% better, it got me thinking that maybe Intel should follow suit. Not only would this be helpful for the environment, but would also allow more people to adopt quad core processors as these cashless processors are 30% smaller and therefore are cheaper to produce.

It is a shame that AMD was at least six months late with these processors. In any case, the next challenge for AMD is to bring down the power consumption even further. In theory these processors should consume 30% less power(because of the 30% smaller size) as opposed to a "mere" 20% reduction.

Looking back, I think that Level 3 cash looks great on paper, but in reality it is a poor way to spend chip real estate. Maybe in the future both AMD and Intel would restrict level 3 cash to gamer and server oriented chips where a level 3(L3) cash would make a real difference.

I also hope that AMD goes the same root with their desktop 6 core CPU. Without L3 cash the six core CPUs would have the same die area as a regular quad core with L3 cash, this would allow for significant power savings or more headroom for higher clocks. More importantly it would cost the same with at least 20% more performance. But if AMD decides to go the L3 cash root, then they would have the same large die area as they have for their Istanbul server chips(approx 330 mm2), which is currently the largest x86 die area.