a little help experts on temps

[Nab]

What is a good idle and max temperature for cpu? Right now my cpu is running 40 idle and 51 w/ Prime95. How much higher can i go??

 

[nemo160]

what cpu? what speed? if athlon thermistor or diode?
sounds pretty decent, but temperature is not the only factor that limits overclocks
post more information and it'll be a lot easier for people to answer you

 

[Mikewarrior2]

what nemo160 said.


Mike

 

[Nab]

Originally posted by: nemo160
what cpu? what speed? if athlon thermistor or diode?
sounds pretty decent, but temperature is not the only factor that limits overclocks
post more information and it'll be a lot easier for people to answer you

I have an Intel 1.6a Ghz @ 2560. Idle = 40 and max is 51(using prime95). I'm using the temp. monitoring program that came with my Asus p4s533.

 

[nemo160]

i think your temps are ok
you maybe able to squeeze out a bit more still, 160 fsb is getting up there though, your northbridge and pci cards way start destabilizing if you push too much further, unlees of course that board supports locking the pci and agp bus speeds
how much voltage are you feeding that thing?
and what are your full system specs?

 

[paralazarguer]

I'm using a 1.6a at 2.13. I wouldn't go higher than this becuase running the PCI and AGP bus isn't worth endangering your devices or endangering stability. I experience a random reboot once every week at least due to simply having the FSB at 133 instead of 100. That being said, my cpu idles at 32 and goes up to 43 under full load. Room temperature is at 24. You CPU is running overly hot. Better case cooling needed. By overly hot I mean that it's hotter than it should be. You don't have to worry about clock throttling until around 60 so your temps are technically fine.

 

[paralazarguer]

By the way buddy, I'm using the same motherboard as you. The version of ASUS probe that came with your motherboard is not capable or recognizing a CPU temp of less than 40 which is why that is what you see. Upgrade to version 2.16.07. You should see your temps go down. Also, update your BIOS. You won't be able to click on the link below but you should be able to copy and paste it into your address bar. That's a p4.16a @ 2.13.
http://www27.brinkster.com/hwsource/temp.jpg

 

[paralazarguer]

here you go...I took this one at 5am. The room temp went to the ideal comfortable human temp of 21C so this temp would reflect a climate control environment. Copy the URL to see the updated pic
http://www27.brinkster.com/hwsource/temp.jpg

 

[paralazarguer]

by the way buddy I had similar temps when I had this rig set up with no case fan. Adding an antec smartfan which isn't loud at all made a huge difference.

 

[nemo160]

you have to consider that he's running 400 mhz faster than you though
while he may be able to improve upon his temps,51c at a 60% overclock just isn't that bad, but he's probably geting close to hitting the limit with some component in his system at 160 fsb

 

[MIDIman]

nice discussion here

i'm running a 'silent' system right now which i just built based on a P4 1.6a, Abit BD7-II, Crucial PC2100 Alpha 8942 and an Antec tru330 PSU. The only fan in here is a silencer on the CPU and the two fans on the PSU. Sometimes I'll turn on a panaflo in the rear port, but quite honestly, it doesn't appear to make much of a difference.

been doing some simple overclocking, and since i know this is a low CFM setup i dont expect low temps. @ 2.1g (133fsb) the system is idle 42 C and 100% goes to 50 C or more.

@ 2.24g (140fsb) i'm at 48 C idle and pretty much reach 60+ C using CPUburn and running lots stuff at the same time.

stability is through a 10% CPU voltage, 2.6v DRAM voltage, and locking the PCI bus at 33mhz.

questions:
1) what is CPU throttling? something about the CPU cooling itself down by turning things off? when does this occur?

2) what is the hottest these new P4's can run safely all the time? i.e. what temp should i shoot for in a silent P4 system at 100% usage?

 

[nemo160]

clock throttling is a safety mechanism built into the p4
if it reaches escessively high temperatures it slows itself down to reduve the heat and avoid damage to the core
low to mid 50's is the highest i'd push it, i'm not sure on where clock throttling kicks in, but 775 said it was around 60, so you want to leave yourself some headroom to compensate for any changes in ambient temperature
sounds like 2.24 puts you too hot, i'd stick with 133 fsb if you're intent on keeping it quiet

 

[jdurg]

Clock throttling occurs at a sustained temperature of 67 degrees Celsius. That means that your CPU can get up to 67 degrees in short bursts and not throttle down, but if the temperature gets up to 67 degrees and stays there for more than a moment, the CPU will slow down to lower the temperature. I can pretty much guarantee this because my 1.8A running at 2.52 GHz idles at around 50 degrees Celsius, and after a few hours of Prime95, reaches a load temperature in the mid sixties. Occasionally, it will get up to around 66-67 degrees. (Highest temperature I ever saw it was 67 degrees, and that was only for a very brief moment.) While some people here may be freaking out that I'm content with temperatures that high, all I can say is that my system is as stable as can be. I have never had it crash on me, and only once got it to crash while running Prime95. (I had run Prime95 for about six hours, then started doing some other stuff on my computer and the thing locked up. Other than that, not once have I had a crash when running my emulators or some CPU intensive games.)

I think the reason I have given up trying to cool this thing off is that no matter how many fans I have in the case, or what heatsink I use, the temperature pretty much stays the same. Right now I have a Cooler Master IHC-H71 and love it because although it's not dropping the temperatures down below forty degrees like many people here have, it cools off the CPU a bit quicker. When I take the load off of my CPU, the temperatures go right back to idle almost instantaneously. So I just think that I have a hot running CPU, but a stable running one. So I really can't complain. I'll just say that a good idle/max temperature for your CPU is the one that keeps it stable and prevents random, catastrophic crashes.

 

[Barrei]

My 1.8a at 2740 mhz and cpuv@ 1.825 , idle 34 - 36c , load 41-44c, your fine @ 40 , 51c.

 

[MIDIman]

thx for the replies!

another quick question - is there any reason why my computer's kernel processor usage stat would be at 75% when it has been left alone for hours and hours? i came back to it and there it was - as soon as i started using the computer it went back down and it sticks around 20-30, etc.

what was it doing? this appeared to even cause temps to be higher than usual as well - low 50's. i'm not at 44.

i hate Win98...looks like i may have to return to XP.

 

[Nab]

sorrry i havn't been able to get on lately, and now i'm only on for a minute, so i can't read the whole thread. Tomorrow i'll have time..sorry for the inconvenience. thanks for the info.