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Memory problem when OC

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I am still fairly new to this overclocking thing, so I need some help from the more experienced folks.


My setup:


Asus P6X58D-E

i7 950 @ 4.0Ghz (seems to be stable)

6gb of tripple channel XMS3 DDR3 1600MHz

H70 watercooling

Corsair 1000W PSU

Radeon 5870


And here are the settings I have for my OC setup:


BCLK Freq @ 175

CPU Voltage @ 1.35000 (cant go any lower or my system locks up)

DRAM bus voltage @ 1.50V (untouched)

CPU PLL @ 1.80 (untouched)

QPI/DRAM core volt @ 1.37500 (untouched)


If you need any further info, let me know and I will provide anything I can to help narrow my problem down.


So here is the issue I am having and it seems to be narrowed down to my memory. The issue that I am having is that if I set the DRAM to auto, it wants to put the memory at 1067MHz which is not what the memory is spec'd for if I am understand this right. When I set it manually when overclocking, the option I choose is 1735MHz if I remember right, because it is closet to the rated 1600MHz. What happens when I set it to that is that instead of showing 6GB of memory, it shows only 4GB of memory. When I go back and set it back to auto, it can detect all 6 gigs.


I want to know if there is something I need to set, such as dram voltage, dram core volt, timings etc. So that I can run it at full speed and than some, and run it stable. I had a complete lockup which makes me point the finger at the memory.


What can I do to resolve this, and has anyone else had this problem before?



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On "auto" the BIOS will set the RAM to the specified frequency and timings programmed into the memory SPD. To run the memory at higher frequencies requires manually setting all of the BIOS options properly. There are known issues with X58 mobos. There have been reports specifically of Asus mobos not showing the proper memory when OC'd. Make sure that you have the latest mobo BIOS installed.


See the link below also.




The following link may be useful:



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Sorry for the late response, but I would like to thank you for your quick reply. I am still having this issue and have decided to ask Intel about this and also get the correct timings for my ram and voltage and hopefully this can be fixed.


Once I know how to fix this, I will post and let everyone know how to go about fixing this issue.


Thanks again.

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