So I'm gonna build my wife and I 2 new computers some time in the next 5-6 months. I'm trying to budget 1500 apiece with monitor & wireless kbd/mouse combo. (My laptop's feeling its age and her frankenbox, although it runs things fine, is too loud and hot for our 1 bedroom apartment) What I'm looking to put together is the best compromise of speed, and quiet but effective heat dissipation. I do however have some concerns/ideas: Ideally, I think I *should* be able to put together something without a reserator or water cooling that relies on maximizing the use of heatsinks with a modest but well-organized airflow scheme. 1. Must have SLi. We're gamers and this looks to be the way to go. At the same time, we're not hardcore and I've seen a few passively cooled (no fans) models at the low end of the chipsets. Anyone seen reviews on how these handle? 2. Whose dual cores are running hotter? AMD or Intel? I know AMD's had the low-heat side of the market for a while, but the last computers I've built were a sock 478 p4 and an athlon 2800, so I'm not sure how the two companies have grown into the dual-core scene. 3. do the non-reserator water cooling systems do anything to quiet the system or do they just reroute heat faster/better but ultimately dump it to an HS and blow it away with the same noisy fans.