SUPERMICRO SNK-P0034AP4 CPU Heatsink & Cooling Fan for Xeon Processor 5000 Series

Pros: Works and installed without issue.

Cons: louder then I thought it would / should be. Will be looking into getting 80mm that are not as loud.

Other Thoughts: does what it's supposed to do without issues.

Pros: Very efficient cooling solution, can be very quiet if the mobo has fan speed controls.

Cons: Large, must check area above heat sinks to ensure no obstructions.

Other Thoughts: These heatsinks will work with any ATX or EATX case using Supermicro dual CPU mobos by using Supermicro part #SKT-0159L, which acts as an interface between the standard ATX mounting holes and the somewhat unusual 771 heatsink mounting system.

Pros: Excellent cooling for the cost. Easy as stock install as it just uses the stock backplate and screws right in. The perfect size, fans not nearly as loud as stock coolers.

Cons: Heat pipes are aluminum not copper. For the cost of the heatsink, they should be copper. But basically it's a supply and demand issue.

Other Thoughts: Was going to go with a Noctua solution which would have cost $120+ shipping. These were much more cost effective for my build.
Supermicro X7DWE board
2x E5450 with BSEL mod (1600 FSB) for 3.6ghz
Enermax 750W modular PSU

Keeps my CPU's massively cooler than the stock heatsinks. Future plans of pin mod for increased voltage and 4ghz using setFSB 445 x 9.