one or two loops

[Carl-Brit]

My plan is to add a 360 alpha cool Monster radiator up top replacing my 240x30mm xspc radiator for the CPU cooling and use the 240mm for the graphics when i add that water block at a later date, I'm just wondering if its going to be better to run the graphics separate with the 240 radiator or run it all in one loop depending on the difference in temperatures ??

This is my current setup:
swiftech mcp350 pump > D-tek cpu block > 240 xspc rad (push pull) >pump top EK reservoir giving me idle 42c and max load 57c on my old 9850BE over clocked.

And what i want to do:
swiftech mcp350 pump > D-tek cpu block > 360x80mm acool monster rad (push) > GPU > 240x30mm xspc rad > pump top EK reservoir.

 

[andybird123]

I think that a GPU block plus rad will be a touch on the tough side for a little DDC to handle, but if you got a 2nd one, instead of running 2 seperate loops you could just run the pumps in series

this would give you the advantage that if one pump fails you still have *some* flow giving you time to shut down safely
temps will rise on one pump, but slowly, so once it's set up you can set alarm levels to notify you and/or shutdown

 

[gcaster]

One loop will be more than sufficient cooling wise. I run 2 6950s and an i5 2500k in a single loop with a 240mm and a 140mm rad, idle temps aren't fantastically low (about 35-40) but my load temps never go above 60-65 (PWM vipers on the 240mm rad). Whole thing runs silent for everyday use with some pretty hard gaming use but Furmark causes the PWM fans to spin up a bit more.
As above your only problem is likely to be your pump, save the money you'd have spent going dual loop and upgrade to a Laing D5.

 

[Carl-Brit]

So either way im looking at a new pump when i add the card at least i know now to save up some more and get the rest of the parts all together thanks for the help guys.