Hello, since my currently 4GB will be going into another system, i am currently thinking of OCing my i7 860. My cooling is now a Corsair H50 with push/pull giving me idle temps at about 25°C. I think of Ocing only to 3,6Ghz since i prefer lower temps due to summer lanparty etc. right now i am considering to purchase one of this two: CORSAIR DOMINATOR-GT 4GB (2 x 2GB) 240-Pin DDR3 SD... 1866@C9 or CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR3 SDRAM... 1600@C7 suggestions/feedback would be nice on this one.. FYI My System is mostly used for gaming, so i am even considering to deactivate HT for lower temps. Thanks in advance.