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<blockquote data-quote="Elf" data-source="post: 57883" data-attributes="member: 13103">It's hard to tell if the problem is related to the new case or the new gfx card;&nbsp; When I first set up the new case it was my old GF4MX gfx card but I never got the chance to run the system for more than 15-20 minutes.&nbsp; It was only after I installed the new gfx card and got such good results that I settled down to watching it full-time, and the problem only appears after it's warmed up for a couple of hours, which is why I suspected overheating.I didn't get a chance to take a picture of the case interior, sorry!&nbsp; More evidence did surface during last night's experiments though.&nbsp; Once again it ran happily from cold for a couple of hours, but then started showing graphical glitches like fonts replaced with garbage.&nbsp; Interestingly, the TV picture remained fine, but a few minutes after seeing the glitches, the whole thing froze with a screenful of graphical mess.&nbsp; Overheating surely, although the control panel for the GPU temperature says 53 degrees, which doesn't sound that high?More things to try this weekend:&nbsp; Running with the case lid off to see if it helps, replacing the old gfx card to see if it makes any difference.&nbsp; I wonder, is it possible to *underclock* the card - would that help and would it affect the 2D performance that much?</blockquote>

[QUOTE="Elf, post: 57883, member: 13103"] It's hard to tell if the problem is related to the new case or the new gfx card; When I first set up the new case it was my old GF4MX gfx card but I never got the chance to run the system for more than 15-20 minutes. It was only after I installed the new gfx card and got such good results that I settled down to watching it full-time, and the problem only appears after it's warmed up for a couple of hours, which is why I suspected overheating. I didn't get a chance to take a picture of the case interior, sorry! More evidence did surface during last night's experiments though. Once again it ran happily from cold for a couple of hours, but then started showing graphical glitches like fonts replaced with garbage. Interestingly, the TV picture remained fine, but a few minutes after seeing the glitches, the whole thing froze with a screenful of graphical mess. Overheating surely, although the control panel for the GPU temperature says 53 degrees, which doesn't sound that high? More things to try this weekend: Running with the case lid off to see if it helps, replacing the old gfx card to see if it makes any difference. I wonder, is it possible to *underclock* the card - would that help and would it affect the 2D performance that much? [/QUOTE]

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