What have you guy's (and gal's) found works the best to keep the temps down? I'm not interested in water cooling (unless absolutely necessary). I'm planning my first build. So far I have decided on the i7 920, asus p6t v2 deluxe, 12 gb of corsair ddr3 1600, an ati 4870x2, with an antec 750w p.s., in an antec 900 v2 case. I am interested in mildly OC'ing the processor, to not much more than 3.2g. Id like the 100% load temps in the high 50's to low 60's.