I would go with the 2nd configuration, but Airspirit isn't wrong either.
The point about the GPU receiving hot water, IMO, is moot: if you get 60 gph (1 gpm), and you have 1/2 gallon of coolant in your rig (which is a low estimate), then the water recirculates through each point twice per minute. Now you tell me, how much more hotter do you think that the water will be? Here's a hint: the speed of the coolant through a 1/2 opening @ 1 gpm is 1.6 feet per second.
It isn't an easy issue, but the general rule of thumb is: rads in parallel, blocks in series. Of course the general rule didn't take into account two pumps, but we know that centrifugal pumps work best in series.
So my suggestion is to optimize for flow, not heat. You've got two low pressure pumps so, IMO, it would be best to concentrate on flow optimization.
res-->pump-->pump-->rad-->CPU block/pelt--->GPU block/pelt-->back to res.
[edit] splitter removed.
BTW, your fan configuration should do well.
Last edited by bigben2k; 02-12-2003 at 09:22 AM.
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