[jtroutma]

Chazz:

Your "backbone" idea has good advantages. The reason why that would be a better choice for you is because your CPUs are not all the same. If you had say 4 durons all running at the same speed and temp, then a single large pump would work fine. The individual pumps would work more to your advanage (more flow to the warmer CPUs). I would still stick with a small car radiator to make sure you have PLENTY of surface area for cooling. You can Vmod 4 120mm fans or use a single large house fan for cooling. Either way, if you have the space I would go for the larger radiator.