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6 gigs but not 12 gigs ram i7

6 gigs but not 12 gigs ram i7
« on: February 12, 2009, 06:25:23 pm »
cant get my i7 940 Gigabyte EX58-UD4P to run at an overlock with 6x2 gigs ocz 12800 ram. Running 3x2gigs 12800 it will do 4.1ghz plus on air and ram will do 1400-1600 depending on timing. These are with stock voltages (ram 6.4-1.66). Although the board does up them slightly.

yet stick all sticks of ram in and it will only run at around stock values and that means for the ram jdec values of 1066. wont boot with any relevant clock over this on cpu and/or ram. So its a major performance loss to go with 12 gigs. Any ideas here? BTW with all sticks of rma i did manually up all voltages to vcore 1.35..qlick 1.3 v and ram 1.66....


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Re: 6 gigs but not 12 gigs ram i7
« Reply #1 on: February 28, 2009, 05:45:04 pm »
More memory means more stress on the CPU, as the IMC is on the die now. This can cause instability on a higher overclock, which what happened with my Q9450 and 8gb ram (although the IMC was on the mobo, it still made the system unstable). You might need to change some voltages to make it more stable, increasing them a notch or two may help.
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