Some results for my i7 920. In my eyes (anyone may think different) an overclock is only an overclock when it's at least 8 hours prime stable (on all cores).

Results so far:

4GHz boot(official CPUz)
Overclock: 3570MHz (21x170) - Primed
Bus speed test: 210MHz


Results sheet

Hardware used:

Processor: Intel Core i7 920
Batch: Batch: 3841 A628
Cooling: Swiftech Apogee GTX, BIX, SW MCP600, 6L water reservoir (old pic)
Mainboard: Gigabyte GA-X58 UD5
Memory: 6 GB (2 x 3) MUSHKIN PC12800 (1600 MHz cas 9, 1.5-1.6v)
Graphics Card: ATI Readon HD4870
Case: Antec Twelve Hundred
PSU: Corsair TX-750W