B3 Q6600 temperatures - High?

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blade52x

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Well, installed my B3 today on my DS3... just to get an idea of how hot these are... these are temps on an Ultra 120 extreme, which is supposed to be the best air cooler available...

At 80F ambient

Idle = 44C 42C 39C 39C
7 Min OCCT Load = 62C 61C 58C 58C

This is at stock settings, at 1.2V under load (drop from 1.275V stock). I've also got a B stepping chip, and while they may overclock better then A steppings, I've read they also run hotter.

I already don't have much headroom for overclocking. My goal is to keep it under 70C. I do realize that this is the hottest time of year as well. I'll probably max out at 3.2GHz or so, but before I overclock I am going to get a P35 board because my DS3 doesn't like overclocking this quad.

Good thing Intel has 3 year warranty because I might just set something like 75C as my limit :D
 
44c idle is very high. i have the revision b3 as well, and it hits those temps at 3.2ghz.
 
blade52x said:
Well, installed my B3 today on my DS3... just to get an idea of how hot these are... these are temps on an Ultra 120 extreme, which is supposed to be the best air cooler available...

At 80F ambient

Idle = 44C 42C 39C 39C
7 Min OCCT Load = 62C 61C 58C 58C

This is at stock settings, at 1.2V under load (drop from 1.275V stock). I've also got a B stepping chip, and while they may overclock better then A steppings, I've read they also run hotter.

I already don't have much headroom for overclocking. My goal is to keep it under 70C. I do realize that this is the hottest time of year as well. I'll probably max out at 3.2GHz or so, but before I overclock I am going to get a P35 board because my DS3 doesn't like overclocking this quad.

Good thing Intel has 3 year warranty because I might just set something like 75C as my limit :D
Click to expand...

Better check and reseat your heatsink. What fan are you using?
 
I'm thinking maybe my ambient is what is killing me.

AC went on, and ambient 75F with 51% humidity where the intakes are at the moment as reported by a sensor, and my idle temperatures are now 39C 37C 37C 37C which is better - but I still want lower!

Fan is an Aerocool 90CFM 1800RPM fan that rotates at about 1700RPM because it's filtered. So it's not my fan attached that is the problem, because those fans move a lot of air.

Does humidity effect temperatures at all? A 5F drop in ambient resulted in a 5C drop on my processor, but humidity was 71% earlier as opposed to 51% in here now.
 
What are you using to read those temps? It makes a world of difference if those temps are off the TCase sensor or off the TJunction sensor.

Max thermal spec for a B3 Q6600 is 62C, but that is off the TCase sensor. If you use a program like CoreTemp or Intel's TAT then you will be reading off the TJunction sensors on the cores, which will be about 15C higher than the TCase sensor readings (a thermal sensor between the cores).

I run my B3 at 3.3Ghz at 1.375v and it is stable as a rock. Temps are about 50C idle and about 75C load (measured off the core TJunction sensors). If you subtract 15C to get the approx TCase reading you can see that even at my fairly high temps I'm still under the rated 62C thermal limit of the processor.

I'm only using a Thermaltake Mini-Typhoon. I had it to 3.2 on the stock heatsink and it was still stable, even with temps shooting upwards of 85C (TJunction sensor). I didn't keep it at that temp for long though :)
 
I'm using CoreTemp 0.95 to measure mine with TJunction 100C.

Idles are now 38C 36C 36C 36C with 75F going directly into the heatsink (put sensor right in front of it)...

There's no way I can take 15C off that because then I'd be idling at room temp which is impossible! Though it would be really nice! :D
 
What temp does it read in the Bios? Those readings are typically off the TCase sensor.

I believe the 15C difference between the two sensors pertains to temperatures under load, and is still only an approximation. The key really is simply knowing which sensor you are measuring, to take any guesswork out of the equation.
 
As far as I thought, the BIOS has always read too low.

Idle: 37C 35C 35C 35C (BIOS reads 20C)
Load: 56C 54C 51C 51C (BIOS reads 38C)

The odd thing is, on my E6600, while the idle temp was too low, the load temp was fairly accurate... doesn't seem like it with the Q6600.
 
The "BIOS" temp is taken with a thermal diode inside the CPU socket. It will typically be several degrees cooler than the actual core temps (temps reported by CoreTemp and a few other smart utilities) which are recorded from thermal diodes built into each physical core of the CPU itself.
 
So 62C thermal spec... is that for CPU reading or the actual core readings?

Edit: NVM didn't really fully above. So as long as Core Temp stays under 77C... I could deal with that.
 
80F ambient sounds extremely high to me. The difference between a 'warm' and a 'room temperature' setting makes a 12 degrees C difference with my idle temps
 
My Q6600 doing 3.3GHz at 1.45v idles at 48C on water, room temp is currently 22C (freak warm day in a british summer).

When I load my cores down I hit 70C on coretemp. Maximum junction temp is 100C on the B3 revision so I am still 30C away from max. Under these same conditions nVidia monitor still reads 48C (I am on water) so this reading must be from the case. I am water cooling with a lapped CPU and water block (should have seen the temp before I lapped),

You have to remember that the Q series are 2 Core 2 chips in one case, this means that during idle the chip is dissipating almost the same as a standard core 2 duo going flat out, hence the high ilde temps. It doesn't help if, like me, you have disabled all things like speedstep and C1E enhanced that lower the idle clock speed and temps.
 
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