Radiator / Fan Config

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Joined
11 Mar 2005
Posts
42
Hi all

I'm just considering building a new Watercooling Rig based around a Corsair 650D.

My goal is to keep it as quiet / efficient as poss (who's isn't?!) and I'll just be WC'ing the CPU - which is an i7 920 running at a modest overclock @ 3.4ghz.
I'd like to keep the radiator in the case and have been reading numerous articles around this.

It seems there is limited headroom (76 mm) in the case to put the Rad at the top (where I want it) and with that in mind, I'm wondering what the best arrangement would be.

I've decided that a Swiftech MCR220 seems to be a good rad choice as it marries slim size (34mm) with good performance, with at least a couple of Scythe Gentle typhoons cooling it (that work very well at low speed with the MCR220)
It seems that an optimal setup would be push/pull - but that may be tricky with one fan exception - below - but that is one of the things I'm looking for feedback on.

So:

Config1 - 'Push': Swiftech MCR220 top mounted - SGT Fans on top (case side) pushing external air down on to the rad.

Config2 - 'Pull': Switech MCR220 top mounted - SGT Fans on underside pulling air down through the rad into the case.

Config3 - 'Push/Pull': Swiftech MCR220 top mounted - SGT fans on top (case side) pushing external air down on to the rad + Scythe Slip Steam 1200 fans on the underside of rad, pulling air down into the case

Config4 - 'Push/Pull': Swiftech MCR220 top mounted - SGT Fans on underside pulling air down through the rad into the case + Scythe Slip Stream 1200 fans case side of rad, pushing external air onto the rad

Questions

Which is likely to be better - config 1 or 2 ? (my guess is config 1)
Would the addition of the Scythe Slip Stream fans in config 3 or 4 be at all beneficial (using these fans as they will fit as they are only 12mm wide) or are they too 'weak' to be considered useful even in this way?
I'd planned on having the rear fan as an exhaust fan in all configurations at present - would that be optimal?

Supporting info:
Space to work in - 76mm
Radiator depth - 34mm
SGT Fan depth - 25mm
Slip stream fan depth - 12mm
Total item depth 71mm

Cheers for any advice, guidance !
 
better if you have the fans on the top mounted rad as exhaust,push/pull will give you only a couple of degrees difference and the slipstream fans are very noisy (what ive read) so my choice would be config 1
 
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