Per Jessen wrote:
Per Jessen wrote:
I'm quite tempted to move the system outside tomorrow - in the early morning we're a couple of degrees below - with a huge external fan, I should be able to keep the whole thing _very_ cold. Mind you, I will be disappointed if it then starts to work. The amount of cooling I've got should be enough.
OK, yesterday morning I moved the box outside, hooked it up with network and power. Outdoor temperature was -1C .
Temperature rose to about 6 in the afternoon, but the machine actually ran pretty stable throughout the day. I had one lockup which needed a hard reset, but I haven't been able to reproduce that.
Whilst running 4 x mprime, the temperatures as seen by sensors stabilised at this:
work System CPU temp3 Outdoor 4 mprime 39 51 81 5 4 mprime 35 50 80 6
So it's all about cooling. The interesting thing is - the machine uses the AMD supplied CPU heatsink and fan. It's got additional fans and heatsinks to improve the air/heat flow. How do I improve on the cooling without looking at water-cooling and such?
Today I've removed the left cover and set up a large fan (similar to the one shown in the picture on the right hand side here: http://en.wikipedia.org/wiki/Fan_%28mechanical%29)
work System CPU temp3 Room 1 mprime 35 46 80 21 2 mprime 35 51 81 21 3 mprime 36 56 81 21 4 mprime 38 60 81 21
Well - the system remains unstable and automatically reboots after a while, maybe 10-15mins, of running 4 x mprime. I've already got an RMA# so I think this board is going back after all.
/Per Jessen, Zürich
Can you still get peltier devices, they used to use them with early P1s and 486s. Their main use nowadays is in 12v cool boxes. They only have a 50% cooling efficiency so 100W of cooling takes 200W of power but they don't need all the pipes of a water cooled system. Also a possibility that your vcore is too high, that causes excessive heat. Dave -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org