Lith, a 350w PS is about minimum, but those Enermax ones are good, so it should work ok since the goal is a modest O/C. I'd say 95% of the 2.4C CPUs should do 3 gig (250 FSB). If you run the RAM with the 5:4 ratio, that drops it down to DDR400, which is exactly what it's rated for, so your buddy should be able to use tight RAM timings. Should be a good setup.