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View Full Version : Temps ok? what to excpect from watercooling?


PixelMover
09-02-01, 02:59 PM
Here are the temps in my setup:
Idle:
CPU1 32c
CPU2 34c
Mobo 33c

Full Load for min. 5 mins:

CPU1 51c
CPU2 48c
mobo 39 c

Are these ok temps?
And what kind of drop is to be excpected from installing watercooling?

Chris

P.S. reading the cooling guide from the front page, but not finished yet :-)

Phil
09-02-01, 03:20 PM
those temps are a bit high, do you have any case fans?
Water cooling would probabally bring you cpu temps down to around 20-30oC at full load depending on how good a setup you get.
The great thing about water cooling is you can allways stick a couple of peltiers on at a later date.

PixelMover
09-02-01, 03:33 PM
I have 2x 8x8 cm adda fans bottom front of the case, pulling air in, and 2x 8x8cm adda fans back of the case (cpu height) blowing out.

I could put in another 4 case fans, room enough, but it is LOUD already...

The HSF are the in-a-box intel P3 hsf (yellow square copper/gold colored hsf with a small fan inside the hs.)

Phil
09-02-01, 03:45 PM
it does sound quite warm considering the case cooling, even for intel coolers. How does your board measure the temp? is it with an in socket thermister or does it take it from the on chip diode?
Is the system unstable?

dimmreaper
09-02-01, 04:06 PM
Typically watercooling will keep a CPU 10C, or less, over ambient temp.

PixelMover
09-02-01, 06:35 PM
Well, the system seems to be stable, althoug it tends to have a bit of 'this program has generated errors and will be closed down' at most apps.. (posted it in operating systems)..
Currently trying to solve it...

if a watercooler usually keeps the system at 10c over ambient, that should make it arond 33c - 38c ? Is that idle or at full load?(the ambient temp is a bit high here due to all the electronics in this room :-))

So what would be 'normal' temps for a P3 1Ghz then?

PixelMover
09-02-01, 06:39 PM
CPU temps are measured through the CPU's internal thermal diode (according to the manual, that is )

Phil
09-02-01, 06:51 PM
to check if your cpu's are stable you should run prime95, you can run 2 copys to stress both cpu's by running one with the -a1 command, this is the best stability testor at present for the cpus.
I would expect temps from a good water cooling system to only be about 5-10oC above room temp, I only get temps of about 7oC over room temp from a glaciator when running my celeron at 927mhz and 2v (only had it at 2v to test 1.01ghz which failed due to my psu not being powerful enough) so with good watercooling on your system you should expect only around 5oC above room temp

PixelMover
09-02-01, 07:10 PM
been looking for prime 95.. is that the app. that calculates prime numbers?
And what is the -a1 command? Is that in the program, or do i have to set that in W2K ?

Please excuse my lack of general computer knowledge, i'm working on that :-)

In the mean time, should i replace my HSF with others?

Phil
09-02-01, 07:27 PM
yes prime95 is the app that calculates prime numbers. the -a1 command is used at the end of the run command so it would be something like this from the run window

Drive letter:\path to prime95\prime95.exe -a1

that will run a second copy (you need to run one without the -a1 commmand first) and windows should asign them to seperate cpu's.

as for replacing the cpu's I would wait to see if prime95 is stable first, if it is and you don't want to overclock then you are ok as you are, if not then try putting some thermal compound between the heatsinks and cpu's first and if you still have problems then you should consider getting the cpu's replaced if still under guarantee as they aren't performing as they should.