GPU和PS3为什么跑Folding@Home这儿快？

We balance the points based on both speed and the flexibility of the client. The GPU client is still the fastest, but it is the least flexible and can only run a very, very limited set of WU's. Thus, its points are not linearly proportional to the speed increase. The PS3 takes the middle ground between GPU's (extreme speed, but at limited types of WU's) and CPU's (less speed, but more flexibility in types of WU's). We have picked the PS3 as the natural benchmark machine for PS3 calculations and set its points per day to 900 to reflect this middle ground between speed (faster than CPU, but slower than GPU) and flexibility (more flexible than GPU, less than CPU).

GPU是最快的，但是非常不灵活，仅仅能运行有限的WU's(什么东西？）CPU是灵活的，但是最慢，PS3则速度和灵活度都是居中的。

就是说，WINDOWS运算的内容和GPU，PS3是有区别的。