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Liquid Cooling Rad Configuration

Last response: in Overclocking
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November 19, 2010 5:44:43 PM

Hello all,

I'll be putting together a new gaming PC next year.

Athlon II x2 250 (temporary)
MSI 785G motherboard (temporary)
Radeon HD 6850
NZXT Gamma
4GB Ripjaws
Fatal1ty 550W PSU

I'll be upgrading to Sandy Bridge / Ivy Bridge once they come out, and that is what this liquid cooling is intended for. I might also cool the 6850 with it as well. Might even go CFX.

I'd prefer to have everything internal. If I get a 120.2, it'll have to be externally mounted on the Gamma. I'm pretty sure I could get away with two internal 120mm rads (one side/top mount, one rear mount). So, if money is not a concern, would I see a difference in temps between these configurations?

Res > Pump > dual rad > CPU > Res
-----OR-----
Res > Pump > single rad > CPU > single rad > Res
-----OR-----
Res > Pump > single rad > single rad > CPU > Res
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a b K Overclocking
November 19, 2010 6:15:49 PM

sorry ;)  i just edited..man you got a quick draw
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a c 324 K Overclocking
November 19, 2010 6:16:41 PM

You are going to need at least a 220 rad for the CPU...and if you add the GPU in, you'll need a 220 rad for it as well.

You have the order fine, res > pump is really the biggest thing, as this helps you fill and prime the loop to prevent the pump running dry (big no-no). The rest of the components can go however you see fit.

What watercooling hardware are you planning on using? List of components?
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a b K Overclocking
November 19, 2010 6:50:15 PM

with minor moding you could fit 2xTA120.2 or 2x RX240 +GT fans for very quite set up which should be planty for OC'd CPU and GPU
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November 19, 2010 8:20:55 PM

rubix_1011 said:
You are going to need at least a 220 rad for the CPU...and if you add the GPU in, you'll need a 220 rad for it as well.

What watercooling hardware are you planning on using? List of components?


Don't have anything final yet. I'm just exploring my options right now. I do like the XSPC dual bay res + pump combo. It'd be nice to get more reviews for it though. Like I said, I'm going for an internal setup, so the res+pump combo looks really good.
http://www.frozencpu.com/products/10038/ex-res-161/XSPC...

I'm leaning towards the Black Ice stealth rads.
http://www.frozencpu.com/products/4082/ex-rad-82/Black_...
http://www.frozencpu.com/products/4083/ex-rad-84/Black_...

Cooling the 6850 is secondary. That thing runs extremely cool even after a couple hours of gaming. I could just as easily replace the stock cooler with an aftermarket zalman to reduce the noise. The XFX fan is loud, even with the BIOS flash.

I'm thinking 3/8 tubing, unless anyone has arguments towards 1/2 or 1/4.

I won't be overclocking much. AFAIK, Sandy Bridge will have OCing disabled unless you have the unlocked K proccy. I was hoping with stock CPU and mostly stock GPU, I could get away with a 220 or two 120s. I might be able to fit three 120s. Would three 120 rads get the job done?
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a c 324 K Overclocking
November 19, 2010 8:31:46 PM

Your URL tags are broke. (Edit: fixed now, thanks.)

You'd rather get a dual-pass rad over a x-flow design...better cooling.

You might want to check out http://skinneelabs.com/triplesv2.html for radiator and fan comparisons. These are all triple rads, but should scale similarly for the 220 series of each.

3x 120mm's for...CPU only or CPU + GPU? If you had some high-end 120mm's with some great fans, you could squeeze a CPU+GPU loop out with 3x 120mm rads, I suppose. I wouldn't really push much overclocking, but you already said you weren't.
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November 19, 2010 8:49:46 PM

Thanks Rubix.

Yea, it'd be three 120s for CPU + GPU loop.

I'm really just exploring my options at this point. Initially, I was just going to replace the 6850 stock cooler with a quieter HSF, and go with an H50 or H70 for the CPU.

A friend of mine had a custom built PC with a 220-cooled 4GHz W3520. Those chips run notoriously hotter (yet more stably) than their i7-920 and 930 counterparts, yet he says he has never gone above 65C running Prime95. I was hoping to pull off something similar with a Sandy Bridge platform. Not to mention I'd probably just start out with a mid-range non-OC i5-2500.

And my 6850 has a rear exhaust blower type cooler. His GTX 260 SLI setup just blows hot air into the case.
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a c 324 K Overclocking
November 19, 2010 11:06:41 PM

If you have great case airflow, its fine.

I run my SLI GTX260's and CPU in my loop with dual MCR320's and a MCP655. I made dual reservoirs.
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November 19, 2010 11:50:10 PM

Thanks to everyone. I'll keep all this in mind.
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November 19, 2010 11:50:24 PM

Best answer selected by BloodyInsane.
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!