Zalman CNPS10x Flex ftw! Horrible mounting process on socket 1155/1156, but the cooling is good. It's really just a heatsink, so you can pair it up with whatever fan(s) you wish to use. It can have one on the front and one in the back. I went for a single low-rpm Akasa Apache fan, to keep my rig quiet. Actually, I got the same heatsink and fan in both my computers now.
The i7-2600K idles at 25-33c across all cores. My old i7-860 idles at ~25c on all cores. I dunno why core #3 on my i7-2600K always seems to run 8c hotter than core #0. I first thought I must have really messed up the application of cooling paste, so I redid it and it's still the same. I'm guessing it's just the architecture of the CPU, or core priority or something. I read the temps with HWMonitor from CPUID.
Anyone else having similar temp differences on their i7-2600K cores?