Well I hope you have your E6600 overclocked to 3.2GHz (8 X 400) and your memory multiplier in the bios set to 2.00 to bring your memory up to 800, that particular chip is made for those settings, I'm running it with a Freezer 7 Pro dead silent on stock voltage 24/7 at those settings You can go 9 X 400 for 3.6GHz but it takes more voltage (more heat) and not worth it, as a trader you want rock solid stability