Berkeley CSUA MOTD:Entry 40392
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2017/10/19 [General] UID:1000 Activity:popular
10/19   

2005/11/1-4 [Science/GlobalWarming, Science/Electric] UID:40392 Activity:low
11/1    PC problem:  is it possible for a PC to crash during graphics-
        intensive operations (i.e. games) if it's not getting enough power?
        I have a new box I put together, and it locks up during some really
        big graphics "moments"--I can't think of any other reason for it (tried
        everything else I came up with.)  Is this plausible?  -John
        \_ Yes it is. HEIL JOHN!
        \_ I think the answer is "yes" ... if your power supply is too wimpy
           and everything is trying to suck down maximum juice it can crash.
        \_ Absolutely. My brother put together a machine with an ungodly
           graphics card, and his computer crashed like clockwork. Turns out
           he needed a bigger power supply. Installed it, and crash-free
           ever since.
           \_ Thanks, I would have thought a 450W Arctic PSU would be enough
              (Asus EN6800, 2GB, Athlon 64 3500+, 1 HD and a bunch of USB
              devices.)  I'll get a 500+ one.  Does a gfx card need more power
              when displaying something like, say, a big series of explosions
              in an FPS game than when showing regular gameplay?  -John
              \_ wow, 450W sounds plenty. but then again, vid cards (esp.
                 nvidia) are power whores. i have a 3200+ w/ 6600GT and a
                 400W PSU, and i don't seem to have any power issues. oh,
                 and newer MBs have multiple power connectors now (part of
                 the ATX2.0 standard). do you have all of them plugged in?
                 \_ along these lines I think a lot of graphics cards are
                    now having thier own direct power connections that you
                    can plug in for increased stability. -mrauser
                    \_ This one does.  All power connects plugged in.  My
                       colleague who postulated this as a possibility says he
                       needed a 2550W supply (!)  -John
                       \_ Uh no, he doesn't.  Unfortunately the likely answer
                          in your case is all XYZ Watt PSs don't supply that
                          much power in reality.  Get a higher quality PS.
                          Read some reviews.  And yes, high intensity graphics
                          that use more onchip features and require more on
                          board vram, etc, are going to eat more power.  Also,
                          it is possible that you have a heat problem as well.
                          You've got a micro nuclear reactor inside your case
                          being cooled by some dinky fans.  Heat can cause
                          all sorts of weirdness.
                          \_ I've got 4 120mm arctic case fans--the thing's
                             running at 59C under the CPU, and less on the GPU.
                             I may try a 450w arctic PSU, we'll see.  -John
                             I may try a 1450w arctic PSU, we'll see.  -John
        \_ I had a couple of games that moved too much data across the AGP
           or Northbridge and crashed the system regularly due to shitty
           MB/Chipset design.  Underclocking the frontside bus fixed the
           problem but is obviously sub-optimal.
        \_ I've had a problem in the past where in certain graphics intensive
           games my computer would lock up.  I called the card manufacturer
           and they told me to uninstall graphics driver and reinstall.
           Apparently you shouldn't just install them on top of each other.
           It worked for me, you may want to see if that'll help you.
2017/10/19 [General] UID:1000 Activity:popular
10/19   

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