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Dual pump?

959 Views 16 Replies 15 Participants Last post by  Clockadile Dundee
Hey guys im new to wc but i was wondering if i do dual rad would i need to do dual pump to take strain off of a single or get a single high flow.Im going with two black ice gt rads http://www.frozencpu.com/products/50...?tl=g30c95s161 can you guys recommend me a pump to run in this loop its cpu only for now,but its going to have 2 5870s in it soon

Oh the cpu is going to be either a qX6850 at 4.2 or a b3 q6600
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Hi.


A single Laing Vario pump (aka D5, MCP655) should serve you well.
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Hello.


No, one pump will suffice for a water cooling loop, provided that you get a good pump.

For your rig, since you have a few blocks, I'd recommend the Swiftech MCP 355 with the EK Custom Top, or the XSPC custom top.

Good luck with your water cooling endeavour!

Edit: The MCP655 will do just as well. The MCP655 has more flowrate than the MCP355, but less head pressure for pushing through the multiple blocks. The MCP655 also comes with stock 1/2" barbs, but the MCP355 needs a custom top to improve the performance and allow the use of 1/2" barbs.
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Agree. That is a great pump (D5, MCP655) and plenty powerful enough. I'm selling an MCP655 Vario in the FS section.
In this case, a DDC might serve you better.

2 rads and 3 waterblocks will offer quite a bit of restriction. D5's are high flow, but perform poorly in loops with more restriction. A DDC would probably serve you better, as it provides more pressure.
^ Agreed. A custom-topped DDC will work wonders in such a loop.
I just wouldn't use GTS rad's, they are very flow restrictive. Now if it was just going to be a CPU only loop using one wouldn't be that big a deal.

Check out this review....GTS Review...

This one has the GTS in it also...360 GTX Beats PA.3 Using 47cfm YL Fans

Since you would need to use at least 86+cfm 120x38mm fans on the GTS for best performance you might want to look at the old BIX...BIX 360 .It does well with higher cfm fans and it's not nearly as flow restrictive as the GTS, they have a BIX and BIP clone in that GTS review also. Good fans for either....86cfm Pana ......115 Pana-S/W
Quote:

Originally Posted by junkyard00000 View Post
In this case, a DDC might serve you better.

2 rads and 3 waterblocks will offer quite a bit of restriction. D5's are high flow, but perform poorly in loops with more restriction. A DDC would probably serve you better, as it provides more pressure.
I had a 655 pushing quite a lot of water through a D-Tek Fuzion CPU block, Swiftech Stealth GPU block, Swiftech MCP30 northbridge block, PA.160 radiator, and BIX 240 radiator. 2 rads, 3 blocks, and it flowed very quickly. However, it's pretty bulky, and I might switch to the 355 when I eventually replace it.
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noise and size dont really matter to me. i want watever works best at a decent price i have around 400 to spend for this thing XD
i just looked at some performance graphs a little more, and even cutting the flow of an unrestrictive loop in half (making it a very restrictive one) doesnt affect temps more than just 1C, 2 at most. as long as you stay above 1 GPM you wont notice much real world difference. D5 and DDC will most definately keep you in the >1GPM area, so dont worry, even with 2 GTS rads.
I'm going to be using 2 triple rads(swiftech), and a single rad(swiftech) with 4 90 degree bends,apogge gt and around 15ft of tubing with my mcp655 vario on setting one. You should be fine but remember rads are most unrestrictive thing in your loop.
2
Single MCP 355 with top is me recommendation. I run 4 blocks and a Thermochill radiator all in 1 loop. My temps are wonderful
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If your willing to buy 2 pumps and 2 rad's why not just set up 2 loops, you'll be better off. Just use a t-line on one or both to save some room.

I really would use something besides the GTS, there just to restrictive with-out being that much better temp wise then what other rads will give you.
ive just built my first loop straight in no testing and its running sweeeeet,
(Gas Engineer/Plumber so a leak was erm not gonna happen lol)
I have a DDC Ultra and it is a magnificant pump i can highly recommend it,
Quote:

Originally Posted by ira-k View Post
If your willing to buy 2 pumps and 2 rad's why not just set up 2 loops, you'll be better off. Just use a t-line on one or both to save some room.

I really would use something besides the GTS, there just to restrictive with-out being that much better temp wise then what other rads will give you.
two loops would be better sharing the same res
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Quote:

Originally Posted by Bradey View Post
two loops would be better sharing the same res
Why would you want, say, your mobo block and your video card block, heating up your cpu water? This seems wacky.

Not trying to rhetorically contradict you, I am interested in your reasoning.
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