Evongugg--I have heard some stuff about "letting it break in", but I really don't buy it. I'll be doing some lighter overclocks over summer (right now), then gradually increase into Fall and Winter. If my luck holds, my room will average 65 Fahrenheit over winter. With any luck, that'll let me get to 3.6GHz (which would simply be awesome--a 100% increase).
Gundam--Do you have a review? I've heard too many people swear by AC5--not enough swear by ACC. It sounds good otherwise--being non-electrically-conductive. I'll think about it. Next, will I really need the extra amps? I picked the Purepower because it's considered a Tier-3 power supply... I can't afford anything more. After that, will the Arctic Freezer Pro 7 bring a Q6600 up to 3.6GHz or so? I was aiming for 3.6GHz overclocks on both--according to my calculator, a 3.6GHz Q6600 will draw about the same as a 3.6GHz E2160 (a bit scary-ne?).
That RAM looks golden, compared to most of the $100+ kits I've seen reviewed in DDR2 800 round-ups. I hope the 2600XT will kick some serious a$$--I'll be waiting for the latest Catalyst drivers to fix the AA problems... though I really don't use AA much.
*Runs off to order the PSU, motherboard, cooler, and thermal grease*
EDIT: Looking at the sticker seen on NewEgg, the Purepower has 29A over two 12V rails. It looks good to me, and, as said before, it's Tier 3.