Summary: I bought this for building my first HTPC and was looking for a quiet fan that would fit in a uATX case and yet not break the bank. This fit the bill and has worked very well. In fact, the case fan is so loud that I have not even heard this fan since it has been put in the enclosure.
Pros: Price, Minimal Noise, and Easy Installation.
Summary: If you need a cheap cooler than this is the way to go. Buy this now.
Pros: Cool my 5000+ Black Edition very well, OC 3.0GHZ runs 30-35C Idle. I am really suprised with the performance I have gotten with this inexpensive cooler. It runs very quiet as well, and i have the fan speed at max.
Summary: Note to Drew: I tinkered with a ton of settings in my bios, messing up my pc, really bad, and then I found the easy way. I cleared my bios settings (using the little jumper to reset it to default), and then let it start normally once.
Pros: Still rock-solid for my 5000+ Black Edition. Works well with my case fans, and can not be heard over them; it's quiet.
Summary: This is an excellent cooler. I am using it on a AMD Athlon 5000+ X2 Black Edition. It is over clocked to 2.94 Ghz and there are no problems what so ever with heat. I also consider it to be fairly quiet. I'd recommend this over a higher priced heat sink as its a great value per dollar.
Cons: I don't get how Dewd managed to overclock his CPU to 3.0 with this cooler. I have the same processor and I can't even overclock it a little bit before I start getting crashes. I put it up from 2.61 to 2.81 and it crashed. :/
Summary: I put this on a new AMD 5000+ Black Edition, and it works great. I can safely overclock to around 3.0GHz, I had it on 3.2 GHz, but it got pretty hot after 5 hours and shut down. The probe I put on the heat sink said (during the 3.2 overclock) like 68 Celcius.
Pros: It's inexpensive, and more quiet than any of my case fans. It also comes pre-greased, so you can just slap it directly on the CPU without laying down thermal grease if you want.