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+12V problem, insufficient powerrr

By Genome852
May 5, 2007
  1. Alright. Ever since I got my new mobo, e6600, and 2gigs of DDR2, my graphics card has been giving me massive amounts of artifacts in EVERY single game I played. I am an ***** since I hadn't checked the voltages earlier.

    Apparently, everest says it should have +12v, but I only have +1V !!!

    This did not happen with my older computer. The molex connector that came with the video card is connected properly and all. I tried using one that is sticking out from the PSU, but unfortunately it doesn't work (theres 6 .. lines on the PSU one, instead of the 5-line molex that came with the video card).

    Is there something I can do to correct this thing? I've reinstalled drivers, reformatted, reseated the video card, etc.

    And no, my PSU isn't malfunctioning since all other voltages are normal.

    Specs:

    7900GT 256mb
    500W PSU
    2gb ddr667
    e6600
    160GB HDD
    Gigabyte GA-965P-DS3

    I've heard that the gigabyte mobo has some power issues... can't find a solution though.

    Field Value
    Sensor Properties
    Sensor Type ITE IT8712F (ISA 290h)
    GPU Sensor Type Driver (NV-DRV)

    Temperatures
    Aux 30 °C (86 °F)
    GPU 46 °C (115 °F)

    Voltage Values
    CPU Core 2.27 V
    +2.5 V 2.64 V
    +3.3 V 3.20 V
    +5 V 4.76 V
    +12 V 3.20 V
    +5 V Standby 5.11 V
    Debug Info F FF FF FF
    Debug Info T 30 04 01
    Debug Info V 8E A5 C8 B1 32 08 42 (77)

    Did some tests...

    It's not the PSU. I plugged the vid card into another seperate PSU and it still showed +1v only.

    It's not the power connector either.

    What else could cause the problem, besides the video card itself, or the motherboard?
     
  2. wolfram

    wolfram TechSpot Paladin Posts: 1,967   +9

    Can you test the voltages using a multimeter? That would be much more accurate than any software reading.

    Have you checked the 7900GT's operating temperature?
     
  3. Genome852

    Genome852 TS Rookie Topic Starter Posts: 25

    The temperatures are 43-48 idle (depending on the temperature of the day) and 63-70 load.

    I don't have a multimeter, but the readings of the other voltages in everest are quite close to what they should be, so why would the 12 rail reading be so off?

    Speedfan reports the +12v as +3v too, and the -12V as -16V...

    And I just realized that the 12v is connected to the motherboard and not the video card >_>

    Ah nevermind, turns out those applications weren't giving the right reading.
     
  4. wolfram

    wolfram TechSpot Paladin Posts: 1,967   +9

    What do you mean? Is a power cable connected to the video card?
     
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