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Thread: ex58-ud5 S3 sleep issue Memory related?

  1. #1
    Join Date
    Dec 2008

    Default ex58-ud5 S3 sleep issue Memory related?


    I have some strange S3 sleep issues since I installed my new gt680 videocard.
    I narrowed it down to memory bios settings.

    Memory is OCZPlatinum 3p1333lv2g (6X2 Gb=12Gb) 1.65volt

    Old situation : corei7 920 (C0), 4870x2 videocard, memory clocked to 1333 Mhz on the default x58 1,5 volt: S3 sleep working 10 out of 10.

    New situation: 680gtx
    When memory clocked on 1333Mhz/1,5volt : S3 sleep not working. 8 out of 10 times pc won't wake up
    When memory clocked on 1066Mhz/1,5volt (=default) : S3 sleep is working 10 out of 10

    What is happening here? The 'only' thing changed is the videocard which is much better for the overall powerconsumption (4870x2 is a heavy powerconsuming card)
    Is it wise to set the memory voltage to 1.65 volts? I read somewhere that in S3 mode the voltage is set back to 1,5 volt so I guess that that won't work.

    Will the 'slower' memory settings of 1066Mhz have any big negative influence on the overall performance? I love to have S3 sleep but not at all costs.

    btw. I am on bios F13 and the rest of the bios settings is set to 'optimized defaults', no overclocking (yet)

  2. #2
    Join Date
    Aug 2009
    Birmingham,Great Britain

    Default Re: ex58-ud5 S3 sleep issue Memory related?

    tried with dram voltage at 1.55v or 1.65v?

    tested with f12 bios? i found that to be better than f13
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