Summary: Working with Arctic on the warranty was OK, except I finally gave up after sending pictures, screenshots of the bios, etc. I ended up taking the DOA fan off and installing it in place of the working Freezer 7 fan. DOA one did not work, the first worked fine. Seems proof enough that it is DOA.
Pros: Quiet, easy enough to install, good cooling.
Cons: One was DOA, and was out of the Newegg return/RMA window. Contacted Arctic customer service, and they were responsive, but not much help.
Pros: Bought this cpu fan to replace the really loud stock fan on my AMD 8320 CPU. This fan is much quieter except for the extremely high pitched whine. It drives me and the dogs crazy. It keeps the CPU cool, but don't buy it if you can hear high frequencies (If you're deaf, go ahead)
Summary: got this because it was inexpensive and I don't plan to overclock my i5, but I'll need to replace it as the noise is driving me crazy and I can't get to memory slot 0 without removing it (annoyance). the mobo mount is oddball, has little plastic tabs and pins that didn't give feel solid to me.
Summary: This could not keep my fx-8320 cool, computer frequently heated to the point where it auto shut off when the thermal protection kicked in, i think the culprit was the undersized base that did not cover the entire chip. The only plus was that it was whisper quite.
Summary: I've seen very good reviews on this HSF. So I figured I'd give it a go. I have a AMD Phenom 2 x4 black edition on an msi atx mobo. Unfortunately this heat sink would not fit properly. It wouldn't clamp down correctly. The AMD clips included are too wide.
Summary: The Good: Installs without having to mount a back plate. Package was very easy to open, didn't even need a knife. Just unlatched a few sides, and it opened right up. I've had heat sinks that were wrapped like they were gold.
Summary: Once I was able to get this installed it certainly does what it is advertised to do and that is keep your system cool. I got a huge difference in temp, lowering my temps an average of 20 degrees C. Its also much quieter than the stock fan that comes with the intel E8400 processor.