Hi,
My Myth box has extremely poor ventilation, and subsequently, runs very hot. I wanted it to be extra quiet, so I shut off all the rear exhaust fans except the PSU fan. The PSU fan is pretty slow; I've reduced fan speed (with a FanMate) for the CPU fan, and I let the GPU (Geforce4 Ti4200) go full speed. All in all, pretty quiet.
One of my problems is the GPU fan on my GeForce card doesn't last. I have to replace the fan every few months. In fact, it's stopped right now. :(
As for temps, it's another story. I don't have lm_sensors working (something about their eeprom module causing issues with ivtv's tveeprom). However, my case has some temp sensors. The heatsink on the CPU is about 64C, and the internal case temp is up there as well. However, I think this is still within spec (AMD Sempron), so I'm fine with it. I might undervolt the CPU a little, to see if that would help. Anyways, I don't care about temps as long as it's not causing problems.
I have a heat problem also, not helped by the ambient temp in our living room is usually around 82F. I do have a lot of fans in my case, and it's noisy. We're used to it.
My cause for concern, however, is the PVR-250. It has no fan on it, and it is getting much hotter than anything else in the case. I taped a temp sensor on the back of the card, and it routinely gets up to 74C. I can't find any specs on the operating range for it. Has anyone had any problems with their PVR-250 overheating? What are the symptoms.
I have 3 PVR250 cards in my box, none of them are the ones I originally had almost 2 years ago when I built it. I have had 5 cards die, and one of my current cards is half-dead. I'm hoping it lasts long enough for the ivtv drivers to support PVR500MCE, so I can try decreasing my number of cards to 2 and tuners to 4.
In my experience, PVR cards work when very hot, but not forever. I see the tuner become unstable and noisy, then I start getting zero length recordings until I reload ivtv, and eventually it won't encode at all.
YMMV
Thanks, Micah
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