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    Go 7600 downclocking in game

    Discussion in 'Gaming (Software and Graphics Cards)' started by toadalone, Jun 11, 2008.

  1. toadalone

    toadalone Newbie

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    Hi

    I've been having terrible "infinite loop in nv4_disp" problems in Company of Heroes: Opposing Fronts (COHOF). Machine is a Toshiba P100, 2x2.0GHz, 2Gb mem, Go 7600 256Mb, XP Pro SP3.

    Never had this problem before - COH original has always run fine, and the COHOF performance test (a legacy from original COH) runs fine, giving me 33FPS average.

    This card seems to automatically downclock when not under load - in normal Windows usage, core/mem speeds ramp up from 0/0? to 150/135? to 198/198 for 10-15 seconds, every few minutes (background log using RivaTuner: NB no overclocking has ever been done). This has always happened, even with original Toshiba drivers - I recognise the fan power-up and "sigh" of air that this produces.

    I think my infinite loop problems are happening because the card is downclocking to 198/198 in the middle of the game. (Normal in-game speed is 351/398, as you'd expect). I managed to play a 40-minute game last night after installing this "fix" for the infinite loop problem: http://forums.nvidia.com/index.php?showtopic=4432&mode=threaded&pid=297859.

    (BTW, anyone know what this "fix" actually is???)

    I noted the time at which the game, instead of BSOD-ing, went down to about 0.5-4FPS (and stayed there for the remaining 15 minutes, which I played just to get good log results). In the Riva log at this point:

    - The card downclocks to 198/198, just for 10 seconds.
    - The temperature is nothing unusual: about 67C, dropping 1C during the downclock.

    I suspect that this is the point where I would have got a BSOD - but maybe this "fix" caught the problem and just gave severely throttled performance instead.

    Temperatures are fine; Riva records idle temp of 50-54C, and a steady max of 67-68C under load (COHOF) with no spikes.

    I'm using 91.33 drivers from laptopvideo2go.com. But this problem (or at least the "infinite loop" problem) originally happened with Toshiba drivers (84.4 from their site), and various other versions didn't cure it.

    Is there any way I can (at least temporarily) disable downclocking on the card?
    Or is the driver (maybe even Toshi's drivers) mistakenly thinking that the card has reached its 115C safe ceiling, and downclocking as a reaction to this?
     
    toadalone, Jun 11, 2008
    #1
  2. KGann

    KGann NBR Themesong Writer

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    Try updating to some new drivers. 91.33 is very outdated.
     
    KGann, Jun 11, 2008
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