I must say--two GTX470s put out a lot of heat. The two 460s do too, but considerably less. Still more than enough to heat up my ~120 sq ft dorm room Really even the new Pentium Dual Cores feel wicked fast. For basically everything, my i7 is overkill. At this point a $75 CPU is more than enough, and a good SSD makes the biggest difference. I love the one in my laptop--night and day vs the 5400RPM disk in my i7.