Fans on radiator

Yep. Push and pull means you have the same number of fans pushing air into the radiator as you have pulling air from the radiator.

When people "stack" fans on one side of the radiator, there's really only one working fan. The outermost fan is the working one, the one between it and the radiator is just the shell (no motor) acting as a shroud. This helps counteract the dead space directly behind the motor casing (where no air flows), so the entire radiator receives air, instead of portions being blocked.

Static pressure is the fan's ability to push water up in a closed environment. In layman's terms, the higher the static pressure, the easier it is for the fan to push air through the radiator (which has restrictions). Most fans don't have decent static pressure, which means when placed on a radiator, the performance level drops below the rated CFM in open air. Most 38mm deep fans (traditional fans are 25mm, btw) have good static pressure, but the ones I use have great static pressure and aren't too terribly loud. Panaflo M1 (medium speed) fans push around 86CFM and work wonders on my radiator. Keep in mind the radiator you choose impacts which fans you should choose, and vice versa.

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I must be the only person who can't get their san aces quiet! At 1200rpm they're louder than my s-flex g fans at full 1900rpm...

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Do you know what their stats are or know a link detailing CFM, RPM speed, and static pressure? Also, what sizes do they come in (even 140mm possibly)?

It's no big thing being a "noob" 06si We all started out that way and asking peeps with experience is the best way of learning I know

Push/pull simply means having one fan pushing air into the rad and one fan pulling air through the rad, oposite each other. What I have always done is use shrouds on my fans (gutted fans) and made sure I had a good seal, especially on the pulling fans Check with your rad manufactuer and see what fans your rad is optimized for. Lately I've used the MCR220 rad with 120mm x 25mm Yate Loon HS's with a fan controller

Having two GPU's + a CPU to water cool I would amagine you'd be better off using two independent loops. I'm sure someone with much more experience than me will chime in on that subject. Also, for the fans, ever since I discovered them and PTS, I've used the genuine Yate Loons because they're inexpensive and l'm "el cheapo" to the max (ATM I have two MCP220's with HS Yate Loons under a fan controller)

EDIT: A little off topic, but thanks for that link BigDirty.

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I get why you're using high static pressure fans with your Black Ice GTX360 and definately have the Panaflo M1's bookmarked. Here's where I'm likely to buy them: http://www.performance-pcs.com/catal...roducts_id=876

This site also has a new fan stocked with a special bearing chamber that supposedly prevents any foreign contaminants.
http://www.performance-pcs.com/catal...cts_id=24880It lists it's static pressure for the two models at 1.53 (mm H²O) with 1250rpm model and 2.97 (mm H²O) with 2000rpm model. Do you think these compare to your Panaflo M1s, particularly in static pressure? I'd get the lower rpm model if I gotheromochill/feser and the higher if I go blackice

I'd likely stay away from those altogether, but that's just my lack of trust in anything "made for PCs". Panaflo fans are engineered for industrial applications, and just happen to have common sizing with computer cases.

Panaflo's slowest fan (the L1A) turns at 1700rpm, pushes 69CFM with 3.3mm of static pressure. Compare that with the thinner (25mm) Nanoxia which has higher speed, higher noise, 10CFM more (not really useful on radiators), and lower static pressure.

There's a reason people buy Panaflo fans, not because they're pricier (not in this case), but because they consistently outperform "made for PC" fans.

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'nuff said.

Nice to learn that tidbit of info, thanks! The Nanoxia fan technology seems very promising, but I'll go for industrial-strength and proven products anyday!

Maybe I'll try the 92mm Nonoxias to replace the ones on my backplate since stock fans often aren't quiet, especially at that size.