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Video Cards- How Hot is too Hot?

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    Video Cards- How Hot is too Hot?

    I have here a PCI video card GFMX420PCI, which translates to an NVIDIA GeForce MX420 64MB PCI video card. I was using it on my ASUS CUR-DLS board in place of the onboard 4MB ATI Rage.

    It started to get flaky, so I replaced the 4 Canicon 6.3V 1000uf with Sanyo WGs.

    Tried some full-screen youtube video, worked great. Went to swap it out as I was going to test another card, and WOW it was hot. Probably 80C. It has the little 2-pin connector, so I could attach a 40mm fan. At present it's passive cooled heatsink.

    Why so much heat? Should I expect a PCI card to get hotter than an AGP card?

    The onboard rage cards don't even have a heatsink. Obviously this card fried the Canicons. Two of them had ESR approaching 1.00. Card is not burnt in any way.

    So is the card defective and am I wasting time adding a fan?

    Or are video cards expected to have short, hot nasty lifespans? Or should I look to some component that is adding resistance, and hence heat to the circuit? It does have one large MOSFET Niko L1084S DNA1327D84 and 2 Toroidal Inductors, but no parts
    show the effects of heat.j

    #2
    Re: Video Cards- How Hot is too Hot?

    GF4 MX and GF2 MX (same thing basically) do get really hot (unless underclocked and undervolted).

    they either have a heatsink + fan (with a heatsink not much bigger than the GPU itself) or a passive heatsink only, which is 3 - 4 times as big as the GPU..

    GF2 MX400

    GF2 MX200

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      #3
      Re: Video Cards- How Hot is too Hot?

      Originally posted by Scenic
      GF4 MX and GF2 MX (same thing basically) do get really hot (unless underclocked and undervolted).

      they either have a heatsink + fan (with a heatsink not much bigger than the GPU itself) or a passive heatsink only, which is 3 - 4 times as big as the GPU..

      GF2 MX400

      GF2 MX200
      or both if i soldered a fan to the fan header holes on a passive card... and that will really keep it cool...
      sigpic

      (Insert witty quote here)

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        #4
        Re: Video Cards- How Hot is too Hot?

        Well, that explains it. My card looks like the top one, small heatsink, but NO fan.

        Thanks very much for your input! I ordered a fan last night!

        Comment


          #5
          Re: Video Cards- How Hot is too Hot?

          Video cards usually have a higher heat tolerance than cpu's, but sometimes the makers save a buck or 2 by putting a smaller heatsink on thinking you aren't going to use it to hard or they anticipate good airflow around the card.

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