Pros: Fits in 2U form factor Excellent flow rate and heat dispersal for footprint

Cons: None, when you consider its application

Overall Review: The other reviewer missed the point of this cooler - this is one of the ONLY 2011 square coolers that will fit in a 2U rackmount case. Does it offer the same temps and acoustics of a watercooler the size of a cantelope? No. But at 8,000 RPM it kept a hex core 3930K at 4.5GHz running prime95 at about 70C stable. Not bad for a little 2U cooler.

Pros: Bought them in bulk, zero problem. Easy to install and quietly keep my cpu cool. fit in U2 chassis very nicely.

Cons: None

Overall Review: a slightly larger fan should make the fan even quieter.

Pros: Product has very quiet fan and kept the CPU at or below 140 degrees F 2 cpu motherboard was in the desktop case. upgraded from 80W to 130W processors with no issues whatsoever. kept it cool.

Cons: as advertised

Overall Review: perfect solution and economical solution to support cpu upgrade. Was able to upgrade a 1cpu MB with E5-2630 v2 80W up to two E5-2697 v2 130W without incident. CPU benchmark before was 2600 and after was 8600.....not bad.

Pros: Works, reasonably low cost

Cons: Noisy! You can hear the PWM, sounds like a grinding or buzzing sound. And it is constantly changing speed, thus the pitch changes too. Would be nice to just hear the air flow. I had to purchase a different model.

Pros: 2U - fits in a micro atx case

Cons: Too noisy for desktop use. I swapped it out with a Noctua NH-L12.

Pros: Easy to install. Inexspensive. Smaller size doesn't interfere with with ram or other componets unlike some of the cartonishly large air coolers.

Cons: The fan tended to get really loud when the processor actually called for cooling. Was not at all noticeable under idle loads, but when it kicked on, boy did you notice. Also did a below average job of actually keeping the CPU cool. Have noticed 15-20 degree temp drops on my new cooler, so a pretty big difference.

Overall Review: This cooler went in easy and is fairly cheap, but ultimately I would recommend going with a better unit. The 2011 series chips aren't cheap, so in my opinion you might as well protect them with a good cooler. I ended up switching to Intel's liquid cooler and while that was a bit annoying to install, it does a WAY better job of cooling, while staying quiet and is not really that much more expensive.