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GPU Temperature #1, #2 and #3, what do they mean for the 4800 series?

W1zzard

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#26
No, that's the 120MM's job. That little fan doesn't have enough airflow to effect the Die's temperature at all.
put a sheet of paper over the vrms so that the airflow can not get to the vrms, it should have almost no reducing effect on the "vrm" temperature now
 
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#27
I repost: they are NOT all on the GPU ide, since people that had no or bad cooling on their VRM's (at least on the 4850) found that #2 went very high and came down when the vrm was properly cooled for instance, that much is obvious.
Please stop insisting spreading (false) information without having any real info to base it on.
In other news for the girls: you can't get pregnant from toiletseats :)
is this guy really questioning W1zzard? and not just questioning but insulting him, your kidding right? :wtf: Unreal the ban stick needs to be used here I'm not a mod but wow Wshlist you have some balls !!!! hes the founder of this forum and a computer legend, if he doesn't know then who would.
 
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#28
put a sheet of paper over the vrms so that the airflow can not get to the vrms, it should have almost no reducing effect on the "vrm" temperature now
No fan on them right now, didn't need one...Just for when I pencil modded.
 

W1zzard

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#29
is this guy really questioning W1zzard? and not just questioning but insulting him, your kidding right? :wtf: Unreal the ban stick needs to be used here I'm not a mod but wow Wshlist you have some balls !!!! hes the founder of this forum and a computer legend, if he doesn't know then who would.
people are entitled to their own opinions. i don't claim i'm always right. but until someone brings forward some serious counter-evidence (that can be reproduced) i believe in my results

wshlist is a bit pissed because he thinks we censored some thread (which seems was full of pointless posts). also he's unhappy that i sig violation infracted him for "This forum uses censorship and deletes post without feedback and excuses, please be aware of that, but don't mention it.. " in his sig
 
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#30
people are entitled to their own opinions. i don't claim i'm always right. but until someone brings forward some serious counter-evidence (that can be reproduced) i believe in my results
W1zz I think I know alot about computers, mainly because of this forum , but I certainly would not question and insult someone who knows as much about this stuff as you do and is considered an expert on this forum and several other forums on the internet. That just leaves me scratching my head. I think his intention was to get banned and frankly your being way to nice (I know thats not my place to suggest).
 

blaher

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#31
people are entitled to their own opinions. i don't claim i'm always right. but until someone brings forward some serious counter-evidence (that can be reproduced) i believe in my results
Maybe the 4850 is different then. You can see in the thread I mentioned earlier that putting heatsinks on the VRMs dropped my temperature by 65degrees when idle. It would crash under load. However, the GPU#1 temperature stayed the same.
 
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#32
Yeah...I hate to disagree with W1zz on this one but, I'm pretty convinced that GPU sensor #2 and/or 3 are for the VRMs and not the GPU die.
 
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#33
Maybe the 4850 is different then. You can see in the thread I mentioned earlier that putting heatsinks on the VRMs dropped my temperature by 65degrees when idle. It would crash under load. However, the GPU#1 temperature stayed the same.
That's not it, the GPU on both 4850 and 70 are the same, just downclocked and DDR3 on the 4850, the 4870 has the DDR5(obviously)
 
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#34
To conclude this will someone possibly post some video footage showing the VRMs getting more air and running cooler with a screenshot of GPUZ?

Then just use the stock cooler and show GPUZ again in the video footage.

This thread has turned into a debate to an extent and most probably won't be resloved without hard proof.
 

W1zzard

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#35
Yeah...I hate to disagree with W1zz on this one but, I'm pretty convinced that GPU sensor #2 and/or 3 are for the VRMs and not the GPU die.
show me your evidence
 
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#36
I would gladly pull my sinks off my 4850 for this debate, but I'm afraid they wouldn't stick again:(
 

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#37
I'll perform some testing tomorrow, but I think #2 and #3 temperature sensors are on the GPU die after seeing W1zz's experiment.
 
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#38
I must have some magical VRM that doesn't exceed 45 degrees under load :rolleyes:

This is with an MCW60, so the GPU is the only thing being cooled.

I do have the VRM's sinked, but they get hot. They are in the 75 degree range.

This is one of my CF'd 4850's at stock.

Some people are special.

 

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#39
Rickpatbrown, really nice temperatures. So, after seeing your results I'm sure that #2 and #3 temperature sensors are on the GPU die. How did you measuse VRM's temperate?
 
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#40
How did you measuse VRM's temperate?
I stuck a diode in between the heatsinks. It was just a quick test to see what ballpark they were in. Nothing scientific. Actually, I think these are the PWM's. I'm not too sure on the anatomy of the card. What are the big gray boxes? These are the ones I put the diode on. I think they say "vitec" on the 4870.

I do now that about 80 degrees gets a little painful to touch. I just put my finger on stuff most of the time. Again, not very scientific. I fingered the smaller black chips that are directly behind the big gray boxes. These feel about the same.
 

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#41
I just put my finger on stuff most of the time. Again, not very scientific.
while it is not scientific it is one of the best ways to measure temperature in my opinion.
your finger is non conductive and gives you optimum control to get even in very hard to reach areas while the system is running

if you can comfortably keep your finger on a spot its temperature is perfectly safe. if it hurts you should worry. you will almost never burn your finger because you will sense the heat radiation from the really hot spots
 
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#42
The 4850's burned me a couple of times. 81 degrees at idle . . . ouch! Will GPUz have the updated lables for 4850's or just 4870?