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Thread: SLI Overclock




  1. #1
    Join Date
    Sep 2010
    Location
    Guatemala
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    Question SLI Overclock

    Recently, i got rid of my (1 month) old Gigabyte GTX 460 1Gb OC because i was unable to OC them beyond 825Mhz without loosing stability. So I got this New babes, the thing is, 825Mhz seems to be the limit again, they look cooler, and they run so too, but, the bottom line is I dont find my way beyond such an underwhelming OC, My configuration is as follows: Core i5 750 @ 3.2 , eVGA P55 FTW, Corsair H50 (Push/Pull), Corsair Dominator 1600Mhz, Corsair TX750W, MSI GTX 460 HAWK 1Gb SLI x2, Seagate Barracuda 7200rpm 500Gb sata, all in HAF 922

    So, Iīm getting the feeling the problem is actually in the TX750 and nowhere else, is this PSU running short of stamina to held the SLI over 825Mhz, is kinda strange, since most reviews push this Gigabyte cards around 850Mhz, and the MSI around 950Mhz, (the same issue with both, beyond that, Heaven will stop and an alert message will pop-up and say the vga where disconnected,

    Help please, any advice will be highly apreciated..

  2. #2
    Join Date
    Mar 2010
    Location
    Australia
    Posts
    28

    Default Re: SLI Overclock

    Simple question, have you tried increasing the voltage?

  3. #3
    Join Date
    Sep 2010
    Location
    Guatemala
    Posts
    27

    Default Re: SLI Overclock

    indeed, but i donīt know what will be enough and what will be too much...

  4. #4
    Join Date
    Apr 2009
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    J'Habite En Angleterre
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    2,431

    Default Re: SLI Overclock

    You can't increase the voltage to really dangerous levels, so there's no need to be concerned. Start with a core voltage of 1000mV and increase the AUX voltage to around half way. You can leave the Memory Voltage while OCing the core and come back to it when you start on the RAM. When you hit a frequency limit, you can either choose to stop there or increase voltage another notch and try again.

    Disconnection warnings (also happens with Vantage) can be due to not enough GPU Core voltage. Unless your PSU is failing, you have plenty of power.

    Also note that going from 825MHz to 850MHz offers very little benefit. Sure, FPS will rise, but you're not going to suddenly get playable frame rates in a game that was unplayable at a 25MHz lower clock.
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