View Full Version : XP2700 Idle Temp with Zalman Cooler
Finally decided on a cpu cooler for my XP2700 - the Zalman 6000Cu and im impressed with the lack of noise form it at its lowest rpm.
My question is, how can i find out what an acceptable idle and load temperature of an XP2700 should be. Currently the fanmate is set to 1650 rpm and after 30 mins the cpu temp floats at around 52C at idle.
Is this a reasonable idle temp or should i be speeding up my fan to drop it a bit?
Try it at 2,000rpm and see if that makes a difference. Even for an AMD chip that idle temperature seems a bit high.
My XP2000 has a zalman on it, and idles at 52 ish on slow. but thats with a 120mm fan
What would be a good idle temp?
Adjusting the fan speed doesnt seem to do that much - not unless i go mad and crank it right up but then i may aswell bring a petrol powered leaf blower in and use that to cool it.
TBH I think the temps you're getting for idle on slowest RMP are fine, but the's just my Opinion
DaveMark
27-06-2003, 01:05
im idol at 40 load 50 odd ( i think aint checked for a wile
dave
eXistenZ
27-06-2003, 17:11
My 2500XP+ with the same cooler sits at 38ºC on an average day, up to 43ºC on a hot day at idle, then ups to 45ºC on a normal day and max I've ever seen it is 48ºC on a very hot day under full load :)
49 degrees at 1900 rpm - and the zalman is just starting to make a faint hum.
Do AMD have a spec sheet for their CPU's with max operating temperatures?
i only got 52c after 30 minutes of full prime 95 load with my CPU @ 1.875 volts :eek:...but that was with my fan @ 5600rpm. soon realised it wasnt a sensible solution so dropped my volts to 1.65 and now max at around 39c with fan full, 46 @ 1600rpm :cool:
mines at BIOS defaults and still runs at 49 degrees at 1900 rpm
OK, I have made some progress with this now but i still need a bit of advice...
I now have my Zalman CPU Cooler running at 1500rpm with the XP2700 floating around the 43 / 44 degree mark when idle :) How did i get this result? Well after a lengthy session of unplugging, volt modding and full voltage fan interchanging i found only one thing produces low temps in my system.... The exhaust fan!!!
I have put my exhaust back to 12v ( was running at 7v previous to installing the Zalman CPU cooler ) now i get cooler temps than running the Zalman at full RPM.
It seems not having a high CFM exhaust results in the zalman just blowing the hot air down onto the CPU which, im my oppinion, causes a lot of turbulance resulting in the same air being circulated over and over.
Now the downside...
The noise! The fan is a Coolermaster, model unknown but it is the one shipped with the ATC-111 case. (I know i have asked this before but it was for 7v modded fans) Would a Papst 80mm fan at 12v make a big difference in noise?
I've spent a fair bit of cash on shutting this thing up - The CM fan at 7v is almost noiseless - but the drop in CFM is just too much. :(
The PAPST would definitely reduce the noise but the chances are it would also reduce the CFM. I have 2 of these in my case but from memory I think they only push 19CFM. You should check what the CFM rating for your coolermaster fan is at 12v then pro rata this down (- about 40%) to see how that compares with the 19CFM the PAPST will shift.
i was just looking at that
the CM's on kustom produce 32.11 CFM @ 12 v
as a general rule id say di you half voltage yuo half the CFM so
CM's at 7V = 19 CFM
Papst = 19.4 CFM
So no much in it really - any other ideas?
A thought i have just had is PSU. Mine has only 1 outlet fan but i added a second fan to it so i could reduce the noise and maintain good airflow which works a treat. But the intake is at the rear of the PSU. AMD recommend 2 fan PSU's with the intake on the bottom to draw hot air away from the processor. But i guess this will result in two 12v fans to draw the air out but 12v = noise :(
Originally posted by Clarksy
one thing produces low temps in my system.... The exhaust fan!!!
I found this with my CPU and zalman flower, I think the exhaust actually draws air over the heatsink, resulting in extra cooling.
Mind you, I think your temps with the fan at 7 volts are more than acceptable. Mine idles at about 50 (52/53 on a hot day) with all my fans running at 7 volts.
AMD temps acceptable limit was above 60 degree IIRC, do don't worry too much about your temos until they exceed 65 at idle.
Many people are going to shout at me now and say I'm wrong, but those are what I go by, althought I never let it exceed 53 at full load (I turn the fans up if im doing anything more than idle :D )
I don't know what case you have but how about 2 PAPST or Coolermaster @7v as exhaust if you have room for them?
Sharky,
If all else fails i will have to put up with those temps and do away with the exhaust fan. But having a 12v exhaust fan has made such a big difference (8 degrees) that this is worth pursing.
The exhaust at 7v and off resuted in a 1 degree difference 52 at 7v 53 off.
Conan,
CM ATC-111 it has removable mobo tray and only one exhaust mounting point so a fan does it all.
Yup Clarksy, 8 degree is a lot :)
However I was just saying that once I did go after lower temps, but now am I happy with silence if it means a few degrees hotter :D
It took me a fair while to not get upset about the temps, but I'm ok with them now (I think :rolleyes: :eek: )
If all else fails Sharky i will be following your lead and having hot CPU and quiet case. Hopefully i can reach a balance somewhere inbetween
How about a compromise? The Panaflo FBA08A12L has the following spec.
1900 RPM fan speed
24.0 CFM air flow
21.0 dBA noise level
This is off an Aussie site but with a bit of google you should be able to find a source. 21dba is still pretty good but you get a bit of increased airflow:)
Why don't you compromise. Keep the rear CM fan at 7v when it's cool enough and crank it up when you need to?
My kids machine is a 111 with a 2.53GHz P4, an Enermax twin fan PSU, a Radeon 9500 Pro with no fan (Zalman ZM80), a CM Fujiyama cooler and all but the blow hole fan running at full tilt.
It sits in a slot in a desk, the temps are 37ºC for PSU and 31ºC for northbridge, the rear CM fan runs at about 2,200rpm and there is a TV switched on in the background at a very low level. I can hardly hear the computer and certainly would not call it obtrusive.
Have you, like I have with my own comp., got it virtually at your ear? And have you, like me, become a little too conscious of the noise?
Your main problem, of course, is that you have an AMD processor. :p
Your main problem, of course, is that you have an AMD processor.
Ouch, but you could be right:) Me too, but can't resist O/C it as it's so easy to do.
Your main problem, of course, is that you have an AMD processor.
AMD's are known for their heat - but i've made my processor choice and i have to live with it. Not that i regret it.
Why don't you compromise. Keep the rear CM fan at 7v when it's cool enough and crank it up when you need to?
Well i have no external control over my fans - id prefer this to be handled interanly.
What i have managed to do is find a fan splitter cable with fan headers on the end. I plugged this into my FanMate then connected the zalman into one connector and the exhaust into the other. I have upped the voltage of the FanMate and found this...
At low the pc is quiet but runs at 52 degrees as before. As i increase the speed the case fan starts off noisier than the zalman, but as i increase futher the zalman actually becomes slightly noiser ( some vibration here too ) till about half way then the case fan can be heard again.
I backed off the FanMate so the Zalman was loudest again and then disconnected it. The case fan was still very quiet and pushing out a reasonable airflow - much better than with 7v so i guess the FanMate must be about 9-10v. Reconnecting the fan gives 49 degrees idle.
So im going to order another FanMate and run the Zalman cooler fan and the CM ehaust fan off seperate FanMates so i can get a better control of balance. I think i can go slightly more with the exhaust fan and keep the Zalman fan at 1500-1700 RPM.
I could knock up a POT to do it but i like the neatness of these fan mates.
I just found this on processor temps and operating specs.....
http://users.erols.com/chare/elec.htm
Sorted now!
Added a fan mate to the exhaust fans and now have 45/46 degrees at idle with the Zalman running at 1500RPM and the exhaust fan running at 1800 RPM which is very quiet.
I found the fanmate in a local shop - while i was there i also picked up a 300W zalman PSU - thats nie and quiet too and was a bit of a bargin at 58 quid :)
Silence at last :)
Hi guys
Do are using any input fans if so how many??? I've got the same processor as you and my temps idle around 55 oC with volcano 9.
Thanks Andy
Yes, i have one of my inlet fans running at 7v and the other isnt connected for noise reduction purposes. Whats ur Motherboard Temp?
My system at this point is running at:
CPU 47c
MB 35c
If your MB temp is 5 or more degrees higher than mine (like your CPU is) then the temp problem is probably airflow related - the ambient temp of the case will have an effect the CPU temp. If the Mobo temp is around the same temp as mine then its the CPU cooler than needs attention.
If the problem is airflow related you can reduce aimbient temps in the case using an outlet fan and, to some degree, an inlet fan.
Do what i did, disconnect all the fans and run the CPU cooler at fullspeed for 10-15 mins - note the final temps (CPU and MB), then connect the exhaust fan and do the same. Then run the CPU at half speed with no exhaust - note the temps, then with the exhaust.
Now do the same but with an inlet fan. Do all of these tests with the case sides on. You should end up with a list of temps - post them when your done.
This should let you see how effective the various fans are at creating the airflow you require to keep the case cool.
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