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Old 2004-07-22, 16:59   #1
optim
 
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Default 55-58celcius idle CPU... is it safe to run prime on it?

hi I just assembled a third machine (Athlon 2600) but it has nearly inexistent cooling so the CPU is 55-58 celsius idle (in BIOS, it still has no OS, probably I will install Slackware10). no overclocking, 28-30 celsius room temperature.

Is it safe to run MPrime on it???

Last fiddled with by optim on 2004-07-22 at 17:00
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Old 2004-07-22, 17:07   #2
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Can you provide us with more deatils (hardware specs, model numbers etc.)? Of particular interest are:

thermal paste you used
hs/f you used
case size and # of case fans
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Old 2004-07-22, 21:11   #3
optim
 
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It's an Athlon 2600+ t-bred 2ghz 256k cache.

Used standard aluminium AMD heatsink with very slow fan

Smallish case with a 350w generic crappy PSU which runs very hot

initially it hadn't any case fans but now I installed one 80mm Thermaltake fan for taking hot air out.

btw the case is full of holes.

the systemboard is Abit KV7 with VIA KT600.

memory kingston ddr333 with thermaltake heatspreader.

the PC was left unused for many months, mainly because I had no spare graphics card to equip it with. Now I sticked in a PCI 2MB card and I can boot it... but I am afraid of the CPU tempoerature.

thermal paste is arctic silver 5.

before installing the 80mm case fan, the PC was freezing up after 10-15min of usage and I was able to work with it only by using a big room fan to spread air towards the inside of the PC. however I need to mention that the room temps are somewhat high here.

I do have a spare massive copper heatsink (globalwin) but it's so big that I have to bent some capacitors of this systemboard, and I cannot install it without dissasembling the whole PC (I need to remove the PSU and/or the mobo), so it's a lot of work for now.

Last fiddled with by optim on 2004-07-22 at 21:19
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Old 2004-07-22, 21:24   #4
optim
 
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well it wasn't Arctic Silver 5, I used this on another PC sorry.

On the PC with the 55-58c idle CPU I used the stabndard AMD thermal compound which is attached on the AMD heatsink.


fortunatelly this heatsink is easy to install/uninstall and it's small so I will remove it now to replace the thermal compiund with Arctic Silver 5. Right now here it's night and the room temp isn't so high, but I will run a test tomorrow to see the difference...

Last fiddled with by optim on 2004-07-22 at 21:28
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Old 2004-07-23, 02:06   #5
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58 C idle?

My CPU doesn't get that hot under 100% load.
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Old 2004-07-23, 11:00   #6
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58 C is way too high.
The main reason is that the cooling you are using is not adequate to the room temperatures you have. I have a similar problem, as the place where I run several machines tends to get hot in Summer. I donĀ“t know where in the EU you live, but it should be in the South, your computer room gets even hotter than mine...
You definitely need to use a better heatsink. A copper one is a must if you are to run P95 in such a hot room. Be careful when spreading the thermal paste: the layer must be really thin. Also, from my experience I can tell you that, unless you have a very good case cooling, it is better to run the computer without the side covers, particularly with a power supply that gets very hot.
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Old 2004-07-23, 11:05   #7
optim
 
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yeah I am in the south EU, in Greece. Thanks for the suggestions.

I am testing the machine now. I previously used the standard AMD thermal compound which is attached to the standard AMD aluminium heatsink. Now I replaced that compound with Arctic Silver 5.

The CPU boots at 30 Celsius and the CPU fan rotates at 3000RPM. It's the standard AMD fan. I check these values from the BIOS.

After less than 2-3mins after the boot, the CPU is at 41 Celsius. CPU is idle and I am in the BIOS. I will let the PC on to see how hot it will get. The room temperature is about 28 Celsius (air conditioning - outside is >35).

edit: maybe after 1-2mins after the last update, the CPU now already runs at 48 Celsius!

Last fiddled with by optim on 2004-07-23 at 11:15
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Old 2004-07-23, 11:31   #8
optim
 
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Default difference between standard AMD thermal compound and Arctic Silver 5

(This particular message is dedicated to the public domain by the author, which means it has no copyright protection. Please feel free to republish or modify it)

Here is the test with correct timestamps.

22th July 2004: Using standard AMD aluminium heatsink and standard AMD thermal compound. Room temperature arround 28-30 Celsius. CPU temperature arround 55-58 Celsius. CPU fan rotates at 3000RPM.

23th July 2004, some minutes before 12:05 UTC: I am testing again the machine, but now I replaced the standard AMD thermal compound with Arctic Silver 5. The CPU boots at 30 Celsius and the CPU fan rotates at 3000RPM. I check these values from the BIOS (CPU idle).

12:05 UTC: The CPU is at 41 Celsius. CPU is idle and I am in the BIOS. I will let the PC on to see how hot it will get. The room temperature is about 28 Celsius (air conditioning - outside is >35).

12:15 UTC: The CPU now already runs at 48 Celsius.

12:20 UTC: The CPU is 51 Celsius now.

12:22 UTC: The CPU is 52 Celsius right now.

12:32 UTC: The CPU is 53 Celsius now.

12:39 UTC: CPU still at 53 Celsius. It seems AS5 does its job!

12:45 UTC: CPU still at 53 Celsius. Test finished. AS5 cools down the CPU by at least 2 Celsius.

Last fiddled with by optim on 2004-07-23 at 11:45
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Old 2004-07-27, 23:08   #9
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Have you tried running P95 with the new thermal paste?
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Old 2004-07-28, 01:15   #10
optim
 
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not yet, I installed the machine with Slackware10. It is not connected to my network yet. I will setup MPrime to see what happens (btw it is configured to shutdown if the temp reaches 66 celsius).

But I don't know hot to read hardware temps under GNU/Linux. I know it's possible but never had the time to look for a program to do that. Can you point me to a good easy command-line (no graphical - the PC with Slackware10 has just a 2MB PCi graphics card which is slowwwww!) program for reading temps?
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Old 2004-08-03, 15:20   #11
optim
 
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Hi I am testing MPrime on the machine from yesterday... first with torture test and now with factoring and later with LL.

The temperature under 100% CPu utilisation exceeds 60 Celsius but is less than 63 Celsius.

It runs on Slackware and I don't know how to read hardware temps real time under GNU/Linux, so the temperatures are checked with the BIOS.
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