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These are great cooling solutions, and would be a 5 rating for a 775 socket, but...
They will not work on any Socket 1156 board I've seen. The heatsink is large and flat on the bottom and comes in contact with the motherboard capacitors. I tried it on a Gigabyte H55M-ud2h as well as a biostar Th55b-hd with the same problem
In looking at photos of other 1156 boards, I see all of them have the capacitors lining the cpu socket so I seriously doubt it will work on most 1156's.
Superbiiz customer service is great, I recently had a problem and as it turned out it was my fault, they were very courteous and willing to get the problem solved any way they could. Prices are great ... (more)