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  1. #1
    ROG Enthusiast Array
    Join Date
    Jul 2013

    Games freezing screen looses signal gpu using drops psu 12v voltage a bit low.

    Hi all.
    Been a while.
    I stopped playing games for a good 12 months as I have had no time.
    I decided to get back into it the other day but I have encountered some problems with my rig.
    What was happening is I was playing games in 3D vision like I used to when out of no where the games just freeze.
    So I done the old spring clean got all the dust out of my fans on my radiators its all water cooled dust out the radiators themselves temps are good CPU is a Intel 4790k at 4.6ghz load temp about 55degrese celcius.
    Gpus are evga g-force 780 sli sc flashed bios at 1137mhz.
    They run around 42-43 degrees under load.
    So to me it sounded like temps but i have half ruled that out.
    Also I noticed my gpu usage will drop to 0% if the game doesn't freeze instantly.
    Sometimes it even recovers.
    Running an asus maximum vi hero.
    21000mhz corsair domination ram.
    So i tried new drivers old drivers no change.
    Added voltage to the gpus no change.
    It seems to be able to run Unigene heaven and furmark for a while fine.
    I checked my psu voltages in bios corsair ax1200 everything good with no load.
    Just thought id try with load using HWinfo and evga precision noticed 3v fine 5v fine 12v drops as low as 11.61 and doesn't go higher then 11.84.
    I haven't had the time tonight to see what the voltage reads when i get a freeze it crash.
    Even sometimes now i get DVI no display sometimes and screen turns off.
    So i cant work out if the 12v is to low or its a pic-e problem or gpu problem.
    From memory the gpus run off the 3v rail correct?.
    Which is fine.
    So im kind of baffled right now and could use some advice opinions on what in have just mentioned.


  2. #2
    ROG Guru: Brown Belt Array MeanMachine PC Specs
    MeanMachine PC Specs
    Laptop (Model)I enjoy my wife
    MotherboardCVI HERO + CVII Hero Wifi
    ProcessorRyzen 7 1800X + 2700X
    Memory (part number)CMD16GX4M2B3000C15 + F4-3200C14D-16GTZR
    Graphics Card #1EVGA GTX980 SC for CVFZ
    Graphics Card #2EVGA GTX 1080 hybrid
    Graphics Card #3GTX 770 for phys x
    Sound CardMB
    MonitorHP w2408h
    Storage #1Samsung 970 EVO 500GB M.2
    Storage #2Samsung 840EVO 500GB and 960 M.2 pro
    CPU CoolerCorsair H105, H110 and H115i
    CaseCorsair 750D and 780T
    Power SupplyCorsair AX-1200i and Antec 850 pro platinum
    Keyboard Logitech K800
    Mouse Razer Mamba
    Headset Corsair Vengeance 2100
    OS W7 Ultimate 64bit and W10 pro 64bit
    Network RouterNetcom Wireless NF18ACV
    MeanMachine's Avatar
    Join Date
    Apr 2014

    Hi unix43 and I recommend testing your PSU to eliminate that possibility.

    The only definitive way to determine if the PSU is failing is to swap it out with a known working unit.
    You may test it with a multi-meter and have all voltages within an acceptable range, however this does not account for any spikes or what happens under load.

    BTW: GPU's run off a 12v rail and here is a good article:
    We owe our existence to the scum of the earth, Cyanobacteria

    My System Specs:

    MB:ASUS ROG Crosshair VII Hero/WiFi GPU:EVGA GTX 1080 sc PSU:Corsair AX-1200i
    AMD R7 2700X Cooler: Corsair Hydro H115i Case: Corsair Carbide 780t

    Memory:G.Skill TridentZ F4-3200C14D-16GTZR SSD:Samsung 500GB 960 EVO M.2

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