AMD Processor Temperature

[dberndt]

What is the range of temperature that is acceptable for an AMD Thunderbird 900Mhz on an Abit KT-7 motherboard? I'm using an Enlight 7237 case.

Thanks!

 

[StickHead]

If you overclock try to stay under about 45C.

 

[Mikewarrior2]

Stickhead,

Your chip isn't running at 35C unless you have an ambient of around 11-14C,regardless of heatsink/fan setup(under 50F).

DBerndt,

Depending on your heatsink/bios revision/mb, look for something about 20-25C over ambient case temp, and you'll be fine.


MIke

 

[Bignate603]

my chip is hitting 58 with an ambient of 30, i think that's high. Should i lower the ambient with another case fan? i don't think air is moving in the case. I got one in front but the case doesn't let much air in and the power supply one isn't that great.

 

[Mikewarrior2]

You're probably best off having both an intake and exhaust fan outside of your power supply fan.

If your idle temp is 30, depending on how much you've overlocked your chip(or if you haven't) and what kind of cooling you're using, expect something in hte 40-50 range for stock speed/stock cooling.


Mike

 

[Teatowel]

As a new Duron user, I posted a topic, Duron 700 too hot?, about a week ago and got so many conflicting replies.

The consensus seemed to be that it is impossible to compare temperatures between systems unless the motherboard, processor and BIOS were all identical, and even then there is massive variation, depending upon the number of fans you have, load, temistor mods, ambient temperature of the room etc etc.

Basically, and everyone feel free to flame me if I'm giving crap advice, if you have a couple of case fans and an AMD recommended HSF, unless your experiencing stability problems, don't worry.

Maybe it was a bad idea to tell people to flame me

 

[Mikewarrior2]

That has been exactly my point for hte past month or two. Yet, you will still see countless thread's asking if their duron temps are fine, and people reporting 32C full load duron temps.

There is no accurate way to measure duron temps, but if you use a a7v/kt7 with a newer bios, you get an fairly close approximation of what your full load temp is. It isn't accurate, but it is within a few degrees C. This is, however, still not measuring direct core temp. It is still measuring under cpu socket temp, but the temps are adjusted +10-12C to try to correct the misreadings.

If you are using a later bios, if you keep the temp within reason(no more than 30C over Ambient for hte most extremely overclocked duron/t-bird), then you'll be fine.


Mike

 

[Bignate603]

But mine is 28 over ambient without being overclocked! It scares me a bit... My toy isn't healthy...

 

[zerogear]

Mine ambient is about 22 C...
Idle CPU is about 27. full load 2 hrs - 34C - Benchmark/7Hr - 37C
Case temp is 20-25C

 

[Mikewarrior2]

ZeroGear,

What cpu/mb/bios revision are you running?



Mike

 

[Bignate603]

zerogear, those temps are whacked.

 

[zerogear]

Abit KT7-RAID (BIOS-1.10M (UL))
AMD T-Bird 1GHz w/ Alpha PAL6035 w/ Sunon using Arctic Silver
Addtronics 6890A Case w/ 5 Fans.

 

[zerogear]

SInce I'm not reading them from the BIOS, and from the MBM4 and VIA Hardware monitor, you'll need to offset it a few degrees.. 6~7 degrees.

 

[Mikewarrior2]

hmm, you're running the newer bios, but those temps are still really, really off...

yet another reason not to compare socket a cpu temps.


Your actual cpu core temps are around 20-24C over ambient case air temp.

You don't need to offset it at all! Bios temp is neither full load nor idle temp. It is in between.


Mike

 

[zerogear]

Well the MBM and VIA Hardware Monitor reads it directly off the sensor on the mobo, therefore it doesn't read it from the BIOS so it's the actual temp, so I do need to offset a few degrees if I read it from a windows program instead of the BIOS program.

 

[Mikewarrior2]

offset up or down?

You still don't need to adjust it. Are you trying ot say that the bios magically reads some other temp other than the thermistor,

while mbm and via hardware monitor do not?


Mike

 

[Bignate603]

I think he means that he can read the thermsistor while it's running under load and under idle in windows. That way he can get the thermsistor's readings under both more accurately than running it heavy, rebooting and going into the bios.

 

[Mikewarrior2]

It would make absolutely zero difference.

He would get the same compressed range of idle to full load temps, just offset whatever compensation he has it to.

On Top of that, it clearly looks like he is offsetting downward 7C, cause the updated kt7 bios + MBM reads fairly close to what full load cpu core temp is. And in his case, it would be at least 20C over ambient.


Mike

 

[Bignate603]

I see what you mean

 

[zerogear]

Sorry, from the temperature I posted I need to offset it UPWARD. I mean BIOS reads the temp correctly, but with the latest update it adds 10 degrees. I use MBM4 which reads the temperature without any auto-offset by the program, therefore I was reading it from MBM and I need to add about 7-10 degrees to the temperature I've posted.

 

[zerogear]

Curious, I'm thinking of getting the YS Tech 120mm 3pin fan fan how is that fan? and does it fit on Alpha PAL6035?

 

[Rigoletto]

My Athlon under full load gives 58C at 21C ambient. I believe it. And it works at that temp without crashing. If you were going to overclock then I am sure a YSTech power fan behind the CPU is enough in addition to good CPU fan. I get a reduction of 14C in CPU temp with that fan that shifts 47cfm. Without overclocking, that's a bit overkill IMO

 

[Mikewarrior2]

a 120mm fan on your alpha? I probably wouldn't(you wouldn't be using the alpha like it was designed to be used, unless you designed a shroud for it).

Not to mention the 120mm Y.S. Tech fan probably shouldn't be used on the mb fan header.


Mike

 

[zerogear]

Well, I'd probably use a 4-pin straight from the Power Supply, the 120mm won't fit on the PAL's standard shroud?

 

[Mikewarrior2]

Pal6035's standard shroud is for a 60mm fan...

What fan do you have on the heatsink now?


Mike