Dynatron A27G 60mm 2 Ball CPU Cooler

Pros: In 2U server, out-performs stock AMD 6000+ fan by 11 degrees at my new idle temp of 105F vs. 116F with stock fan. Sustained torture CPU temp max of 136 to 141F compared to stock AMD cooler max at 153F (before needing to abort the test because of 145F AMD recommended max operating temp for the 6000+).

Cons: Not rated for 6000+ 125W CPU thermal design (but outperforms stock AMD cooler in this application). Rated in specs up to AMD 5200+, which is 89W thermal design. No real cons, if you understand this is for a rack-mount server to be deployed in a datacenter so the noise of *all* of the fans in a 2U server isn't an issue.

Overall Review: Tested in 78F climate controlled environment which will be max temp in datacenter environment of 72F +/- 6 degrees. The front-do-back direction of airflow is probably the largest contributing factor in a 2U case. The stock AMD fan in a 2U case took air from the top (that already may be heated) and pushed the air across both sides of the motherboard, which heated the memory on one side and heated the stovepipes on the other side. (ASUS M2N32-SLI Deluxe w/8GB G.SKILL RAM, 6 W.D. 320GB SATA's as RAID 0+1). With the cover removed from the case, the AMD stock cooler slightly outperformed this cooler because direction of airflow wasn't an issue.

Pros: Defiantly large enough to cool even the most hungry CPU's, Plenty of airflow. On my MB the side mount fan is great for getting the hot air out of the case as it is pointed up towards an air exit in my case.

Cons: Must be careful and trust/know what you are doing when installing this, as others have said it has it's own back plate. But IMO it isn't truely negative due to it adding stability to its actual negative.... It IS freakin heavy but not a real concern unless you plan to be dribbling your tower?? heh a stationary case and strong MB will do fine.

Overall Review: I really don't understand all the fuss over the noise. I must have a decient MB that drops the RPM down if they aren't needed on the CPU fan. Because it is only loud when you reboot or first turn it on while the MB posts. After that I don't hear a whistle. AND I run my cases with the sides off next to my feet less than 2 feet away. So unless you all use MB's that keep the CPU fan spun up all the time, I don't see what the noise issue is.

Pros: Best cooling I've seen yet, side profile makes a big difference. More compact then most side blowers, ita a quality copper heatsink, looks classy and performs fantastically. Comes with a tube of thermal grease.

Cons: Heavy, extreemly loud, pricy. Semi-complicated install as you have to remove the standard fitting and tie it directly to the backing plate.

Overall Review: The fan that comes with it runs at 7200 RPM and is noticeably loud even through headphones. I'd recommend replacing it with a quieter one if you are going to be sitting within 20 feet of it.

Pros: Side blowing heatsinks are by far the best for quick cooling. This thing will keep your CPU as cool as possible with the max possible heat displacement.

Cons: This thing is LOUD! I have to use the motherboards power performance options to reduce the settings so the fan wont be so loud. Even then, it's annoying. Really heavy also. I woudln't recommend this for someone trying to make a quiet machine. Awsome for overclocked people who don't care about the noise.

Overall Review: Given that there aren't many am2 heatsinks to start, this is the best but with a horrible downside. If all you are using is a 65mm CPU then don't bother pluging the fan in.

Pros: It cools the cpu.

Cons: It sounds like a freight train and the one I got also had a problem with vibration and would cause additional noise until I bent the case together to prevent vibration. I ended up replacing it with the stock heatsink after one day of the deafening whirring. This fan is the loudest fan I have ever owned even when it is only running at half speed.

Overall Review: I guess the main reason why it is so loud is the fact that it is so small with a very high rpm. I have read warnings about loud fans in the past and have found that people was making a fuss over nothing. But let me tell you I was shocked at the noise level of this thing. If sound is not an issue at all like if you are deaf or you have your computer behind a bunker wall then this would be an ok fan. But I feel as if I wasted my money on this fan since I will never use it.

Pros: Compact size for 2U rackmount servers. Solid retention mechanism. Fan appears to be built for many years of 24/7 operation.

Cons: None

Overall Review: This unit is made for SERVERS. Stop complaining about the NOISE and buy a heatsink made for home use.

Pros: high rpm cools good

Cons: too loud