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Problem with GTX 285 SLI

Discussion in 'NVIDIA' started by DanishDevil, Nov 2, 2009.

  1. DanishDevil

    DanishDevil

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    First off, these are two BFG GTX 285 OC's running on the OC2 BIOS. Just bought them Saturday.

    I hooked them up, SLI connector and all, booted, let it figure out what was going on (on the latest drivers), and rebooted, then enabled SLI. Everything was peachy king, and I hit up some Borderlands (for a few hours).

    A total of 4 times in about 3 hours of gaming, this happened: The game froze. Just like hitting pause on a movie. I had to CTRL-ALT-DEL and start task manager, and "Switch To" the game, and it resumed as usual, a few times killing me in the process (slightly irritating).

    One things that I have noticed is that one of the cards runs warmer than the other by a good 5-10C.

    Could this be the display driver crashing? A bad card? Should I test them separately? Run a benchmark to see if my scores are ok (and possibly detect a bad OC?)

    :toast: in advance!
     
  2. Anath New Member

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    I would test the individually. Also I am sure you know this but when you sli a lot of cards cant oc as high while running an sli configuration. I am not saying you cant oc them just i have seen from my own experiences and with others that the cards tend to artifact/crash when high oc's are paired in a sli or xfire configuration. Have you monitored the card's heat while under load? I know that when this happened to an old card when it got too hot the game would freeze. I just upped the fan speed and it didnt happen anymore.
     
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  3. Bo$$

    Bo$$ Lab Extraordinaire

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    up the fan speed, one card is sucking up all the radient heat from the second so 1st card runs 5-15 degrees hotter, try underclocking to find out if the cards are stable at the clocks, if not then might be a heat issue or a driver issue
     
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  4. DanishDevil

    DanishDevil

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    They're 1 slot apart at least, so they're not sandwiched. I'll monitor some temps then give them a shot individually.
     
  5. zithe

    zithe

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    Is the top one hotter? It could be sucking heat off of the back of the bottom card and blowing it over itself.
     
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  6. va4leo

    va4leo New Member

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    I have the BFG GTX 285 OC2s. I experience the same problems. It used to be tha the Light on the Graphics card goes red (indicating a possible lack of power, however, this is unlikely as i have a 1000w PSU). However, after the recent reformat (upgrade to Win7), I now experience similar to yourself, freezes (wihtout the ability to ctrl+alt+del). Have to restart PC.

    Me thinks it could be a Direct X issue.

    In dividual cards work flawlessly. Its only when runnign SLI and in stressful games. Its odd. Temperatures NEVER exceed 70C with my profiles settings.

    To the OP :

    Using nVidia Tools, i got the fan graph set at 10C-20%, 44C-40%, 85C-99%. Maybe give that a try?

    Maybe try updating DirectX? A number of the times this was an error.
     
    Last edited: Nov 2, 2009
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  7. DanishDevil

    DanishDevil

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    They're sitting flat, not in a case.

    Will do. Thanks for the tips.
     
  8. PP Mguire

    PP Mguire New Member

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    Just crank them to 100 while testing. If your temps are cool and it still freezes try underclocking. If that dosent work its software.
     
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  9. erocker

    erocker Super Moderator Staff Member

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    You should make sure all your voltages are stable. If the rest of your system is OC'd and stable, adding SLi into the mix can pull a lot of volts, perhaps causing not enough voltage to another component. While your PSU can handle it, you may just need to bump up the voltage a bit elsewhere. Have you tried running your entire system stock?
     
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  10. DanishDevil

    DanishDevil

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    Everything is stock at the moment except for the cards, which I would have to flash to their normal OC bioses.
     
  11. erocker

    erocker Super Moderator Staff Member

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