On Tue, 2003-07-15 at 14:11, Thomas K. Gamble wrote: > > I had a system that was experiencing periodic lockups recently. Turns > out the cpu temps were creeping up to around 78C. Improving the case > cooling brought the temp down to around 63C under load. Still not > ideal, but the system is in a safe and has limited cooling. I may have > to try a different heatsink fan combo. This is a Tyan dual cpu mb with > 2100+MPs. Obviously reliability fails well below 110C, at least for > this system. > > Anyone know which mbs have the core temp sensors?
Well, the core temp sensors are in the "core", which is the XP chip itself. In other words it's an AMD cpu thing; which is the reason for the increase in accuracy over the mobo sensors. If you were at 78C you were at extreme risk of frying your CPU's. In fact it's possible that there might have been some damage done. But you can chill those puppies and you might be able to get stability under high load with no problem. What I would do is install two Vantec Areoflow heat sink fans (they have copper cores, surrounded by a block of machined aluminum) after cleaning the chip surfaces carefully with a q-tip soaked in odorless mineral spirits to get rid of the old thermal compound. Same for the HSF. Get some Arctic Silver 3 thermal compound (the best thermal resistance rating you can get) and use that to install your Areoflows (model number VA4-C7040). Arctic Silver 3 is pretty much the best thermal compound around and as a result of it's superior thermal resistance it can get your core down by as much as 7C. The Areoflows have bearingless fans which are some of the quietest in the industry, and ultimately reliable because they are, well, bearingless. It is possible to get a better thermal resistance with another HSF, but not without going to a bearing based fan, and the HSF's that outperform the Areoflow don't do it by a significant margin and plus they weigh a ton cause usually they are solid copper. That can possibly put a physical strain on the mobo if it's in a tower case. > -- > Thomas K. Gamble > Los Alamos National Laboratory > Advanced Diagnostics & Instrumentation (C-ADI) > p:505-665-4323 f:505-665-4267 > MS-E543 LX -- ����������������������������������������������� Linux Mandrake 9.1 Kernel 2.4.21-0.13mdk "Filter That, Beotch!" --Lanman, MDK Newbie List ������������������������������������������������
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