Video card problems BFG 7900GTX

Discussion in 'OT Technology' started by somebodyelse, Jul 26, 2006.

  1. somebodyelse

    somebodyelse OT Supporter

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    Current video issues

    My current setup:

    Enermax 535W PSU (separate 12V rails)
    Asus A8N-SLI Premium (BIOS version 1009, latest before Beta)
    AMD64 X2 4800+ (2x1MB cache) Socket 939
    -> XP-90C heatsink with 92mm high flow fan blowing into the heatsink.
    2 x 1GB Dual Channel (512 pairs) OZC PC3200 (gold plated 2-2-2-5)
    Audigy X-Fi FPS Edition
    BFG GeForce 7900GTX (factory overclock, reg 650MHz, sold at 670MHz)
    -> (planning to purchase a second card for SLI soon)
    200GB SATAII Seagate HDD 7200RPM (windows installed)
    300GB SATAII Seagate HDD 7200RPM (linux and extra storage)

    1 x ViewSonic VX924 19" LCD
    1 x ViewSonic VX922 19" LCD

    Windows XP SP2 w/ latest updates

    Here are my problems. (Note, I had an AMD 4000+ on here a couple weeks ago and had the same issues)

    Very often I get the dreaded BSOD, something to do with nv4_disp.dll. From what I've read on google, this is a very common issue relating usually to drivers. I have used the drivers right off the CD, the fully updated drivers from nVidia's site, and the XG drivers. I have reformatted windows just to see if that helps. When changing drivers, I uninstall, boot to safe mode, use driver cleaner to remove, reboot, and cancel auto install, then install driver with install program.

    My other issues are, when running DualView mode and playing a game like FEAR on the one monitor, it runs great. Then it suddenly locks up for a second, the other screen (just the desktop) goes black like it looses the signal for about a second, then comes back up and everything returns to normal. It is starting to do this much more often. Used to be every few minutes. Now it's every 15 seconds or so. Way too annoying.

    Also, occasionally (especially if using spanning) on the one monitor, I get a little line that vibrates up and down. It isn't a visible line, but if there is something there like text or a picture, that little line jumps up and down a bit. It's on the lower left side of the monitor and goes horizontal for about 4-6 inches. If I change the view to say DualView and back to Spanning, it goes away.

    I have tried installing the lastest chipset drivers for my motherboard, latest sound drivers, video drivers, windows updates, and have the latest BIOS that isn't beta. I don't understand why I'm having so many issues.

    I also have a monster power bar which is supposed to filter line noise. I'm pretty sure there is enough power. As for temperatures, my GPU runs at 58 C under load. CPU runs at around 45 C under load. Nothing is overclocked (except the factory overclocked BFG card, which is only 20MHz extra.)

    Any ideas on the problems going on here? I’m getting very annoyed after all the money I’ve dropped into this machine only to have it crashing a few times a night. Could the card be bad? I might try getting it replaced (got the extended over the counter warranty for 2 years, might as well use it I guess) but I don’t know. I got Linux to install last night, I have yet to play with the configuration or push the card to any limits yet. I’m just kind of lost. Maybe you people have any solutions to anything here? Any help is greatly appreciated. :)

    EDIT: Changed text color to black...
     
    Last edited: Jul 27, 2006
  2. Clarity

    Clarity New Member

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    Your av is the shits. :bowrofl:
     
  3. somebodyelse

    somebodyelse OT Supporter

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    When I called looking for the second 7900GTX, they said the problem could possibly be with the card itself or even the motherboard. Anyone else have anymore ideas?
     
  4. R-Type

    R-Type The Bydo Empire must die!

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    1. check power supply rail voltages while the system is under load/running a program that tends to crash (preferably some recent game that stresses GPU). they shouldn't fluctuate much at all.. if you see significant voltage drops, the supply is overloaded and you'll need something beefier.

    2. to be honest, it sounds like you've got a card with bad and/or overheating ram.. you could also try UNDERclocking the card to standard reference values (650/800 (1600ddr)) or even a bit lower, just to see. If those artifacts disappear, then the card is bad.. return it.

    3. try running the problem apps with one monitor (unplug the 2nd) and see if the crashing goes away. if it does, try newer builds of drivers

    *EDIT*
    with #1, use a voltmeter to do this.. do NOT trust the motherboard voltage monitors.
     
    Last edited: Jul 27, 2006
  5. somebodyelse

    somebodyelse OT Supporter

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    Alright, thanks for the input. I'll have to wait till I get home from work, though I was reading something about some people needing 600W or more to run a couple of these cards. I don't know about the overheating, the highest I've ever seen it go was 58 C. Apparently the overload temp is 110... I'll try these tonight. Thanks for the input :)
     
  6. R-Type

    R-Type The Bydo Empire must die!

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    well the temp readout is for the GPU.. if the heatsink was poorly installed, individual ram chips could still overheat while the gpu shows a reasonable temp.
     
  7. CleanS14

    CleanS14 New Member

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    You might just want to RMA your card since I believe BFG has a lifetime warranty. This is definitely graphics HW related. Just curious how long ago you bought this card?

    Your issues as long as you keep the cards on seperate 12v rails of the PSU are not power related as the 7900GTX draws ~150W total at max perf. This is split between the slot (75W) and the 12v rail (75W). As long as the rail you have the card connected to is rated at more that 6.5A you're fine.

    And yah... at least 600W+ with the right 12v rail distribution if you're going to run these in SLI.
     
  8. Doc Brown

    Doc Brown Don't make me make you my hobby

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    What's that thing get on 3DMark?
     

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