I have the Rampage 3 Gene with a x5660 and I can boot 21 x 200 for 4.2ghz with 1600 ram.
I have 3 x2gb Gskill 9 9 9 25 1.65v
What is your uncore? I have to run mine at 2x ram speed or one click under 2x ram and I have it at 1.3v
I normaly run 23x175 for a 4ghz 24/7 overclock. Ram is in the 144x range 8 9 8 24
You should be able to post at 1600 with your hardware.
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