Single loop query

[wraith]

Hey guys hoping you can help me out. In the next few weeks I'll be starting a build on a midi watercooled case. I'm going to be cooling an AMD processor probably an X2 and two 5850's in crossfire. Would it be alright to run them all of a 560 rad (external) ie: rad - pump - cpu - gpu - gpu. I realise thats going to be quite a bit of heat going to the second 5850 but just thought id ask to see if its possible. I have no problems doing a dual loop if nessacary though for the sake of less hoses i was hoping a single loop would suffice. Any help you could provide would be appreciated though.

[sswilson]

What rad are you considering? You wrote "560", did you perhaps mean "360"?

A 3X120mm rad should be sufficent for cooling all of that, and as far as the "single loop" goes, most testing I've seen has shown that there is very little varience in temperatures between different points in a single closed loop once it's up and running.

[wraith]

Hey thanks for the reply and no i did mean 560mm ie 140mmx4 rad likely to be Phobya G-changer. So theres no issues with runnning the three in serial then? If so thats good news.

[sswilson]

Nope, shouldn't be a problem. As I said... most of what I've seen suggests that the temperature at different points in a closed loop will all tend to be pretty close to each other.

[Liu Kang]

A loop should always start with reservoir to pump, a pump has to have a constant feed of water or it'll die. Going Rad - Pump like you indicated is innefficient and ill-advised.

Reservoir > Pump > Rad > CPU > GPU > GPU > Reservoir/Repeat

Multiple loops are ideal when it comes to maintenance and upgrades... they don't really have a huge effect on temps. Like sswilson said, water temps won't very much throughout a closed loop.

[wraith]

Thanks for the replys forgot to mention I'll be using an EK pump which has a small resevoir on the top of it.

[AmuseMe]

Why not get the Hardware Labs Black Ice 560. Thats a 560 rad if I ever saw one.