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Q6700 high temps

post #1 of 13
Thread Starter 
So i just upgraded from an E6600 to this Q6700. The rest of my system is up to date in my sig. I just got a new case, for better airflow. Returned my Zalman 9900LED that was hastily purchased and got a Thermalright Archon. I did notice a small decrease in temps from the exchange. However, both this Quad and my old Dual core seemed to have the same max levels. Both were roughly 1Ghz overclocked, roughly around 1.4vcore and the limiting factor were temps. I just kind of wondering if this is just a coincidence or is it possible that my extremely limited Mobo is to blame? This P5B vanilla board is very limited in what I can adjust for overclocking. Basically Bus speed, RAM speeds (but only in ratio's, I cannot set it manually), RAM voltage, vcore, NB voltage, FSB voltage, SB voltage ICH voltage, RAM timings... and thats basically it. Besides just disabling all those "features" like Vanderpool Tech and Speedstep, etc. Is it possible my Mobo just can't be tweaked enough to get a great OC or is it possible I just have to thermally hungry chips? I mean, the vcore's aren't high and they have decent VIDS (E6600 was like 1.28 and Q6700 is 1.26)

I dont know, I guess I just expected to be able to really push this Q6700 with basically one of the best (if not THE best) air cooling cooler and I'm not even pushing vcore near max.

Just a noob looking for input. I'm perfectly happy with a 1Ghz OC, im just curious.

The reason I made this thread, I just ran Prime on my Q6700 at 3.6Ghz and roughly 1.41/1.42vcore (in CPU-Z) and reached thermal shut down at 61C. No BSOD, just shutdown and the smell of hot electronics from my exhaust fans (no smoke or burning, it still runs fine). Just seemed weird all these threads I see people saying your CPU can run up to like 70-80C before it will throttle. Maybe its because I disabled some features, but I never reached 62C and it certainly never throttled. I just get amazed when i read about people with these same chips pushing max vcore and have LOWER TEMPS! Really? Some even have very midrange air coolers. My buddy thinks people just come on here and lie, but I dont know... lol

Just for reference, my room temp is usually about 72F. Idle temps are 26-32C and when I play CoD BLackOps I max at 55C on my hottest core, and that is after a gaming session that lasts a few hours straight and GPU heat pushing into my case as my GPU isnt enclosed. I think BlackOps pushes each core roughly 75%. Real world, that is the most my system gets pushed. I dont Fold. I have never reached thermal shut down like that on anything other than Prime95.

I also have a Xigmatek PTR-CN881 on my Northbridge. Both coolers applied with OCZ Freeze.
Edited by Blacklac - 2/6/11 at 11:43pm
    
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post #2 of 13
You may have a point about the motherboard, it may be at fault. Here's my reasoning, but I think you should test more before pointing finger in any direction.

There are two IFs: if the temp reading is correct (double-check with other soft) then 60°C is by no means a lot and the rig shout down due to other problems; if the processor is a B3 revision than it is hotter and OCs less than newer C0 (G0? can't remember).

If the rig shut down when the CPU reached 60°C and you smelled burnt plastic, than you smelled the CPU power delivery circuits (Mosfet or VRM whichever you want to call them). They're usually between the CPU socket and the backplate I/O and they supply power to the processor - a quad, while OCing, places a lot of strain on them and they can heat up quite a lot. More expensive boards have more VRM phases that can supply more power and have fancy heatpipe heatsinks to dissipate the heat.

What you can do is to buy some heatsinks to place over the VRMs and/or add a 60/80mm slow spinning fan to cool them. It's easy to test if the VRM are the bottleneck, just open the case and suspend a fan to blow cool air on these chips. Also consider the chipset may be a limiting factor, so try to cool it by adding eventually another fan over the NB radiator.

Hope this helps. The problem with cheaper boards is that they have poor cooling.
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post #3 of 13
Thread Starter 
I have used RealTemp and Aida64 (which runs about 5C cooler than RealTemp and Coretemp). I use CoreTemp mainly though. I just tried those 2 to verify. Thats a good point about the VRM's though. I will look into a possible cooling option for those.

The Q6700's are only G0. It's weird though, I've read people say they were ok to 70C, but I think its because the Q6600 G0 was rated there, but Intel still lists the Q6700 at 62.2C.

At first, I thought Power Supply, which really pissed me off because this was brand new and I was told it would be plenty for my OC'd rig. But, I think it is thermal limitations, somewhere. Or my Mobo.
    
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post #4 of 13
Intel states Tcase temp of 62C for Q6700 which is not a core temperature but reading of a sensor in the center of IHS..

Now that Q6700 G0 has Tjmax = 90C and that is max operating core temperature stated by Intel..

For safe 24/7 usage keep your core temperatures under 75C at all time..

Also when using CoreTemp program make sure that your Tjmax is set to 90C for accurate readings..

If it says Tjmax=100 then just acknowlege that your actual core temperature is 10 lower than what CoreTemp reads..

CHEERS..
     
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post #5 of 13
Quote:
Originally Posted by KingT;12294850 
Intel states Tcase temp of 62C for Q6700 which is not a core temperature but reading of a sensor in the center of IHS..

Now that Q6700 G0 has Tjmax = 90C and that is max operating core temperature stated by Intel..

For safe 24/7 usage keep your core temperatures under 75C at all time..

Also when using CoreTemp program make sure that your Tjmax is set to 90C for accurate readings..

If it says Tjmax=100 then just acknowlege that your actual core temperature is 10 lower than what CoreTemp reads..

CHEERS..

THIS! and..

some stupid Questions.. maybe a newer bios got better settings/oc possibilities? did u flash? there are aslo some OC bios downloadable if you search in google... Is a good airflow REALLY granted?

i looked at your cooler.. its got just half the size of a mugen2 or similar coolers to it. maybe exactly this is meaning the 10°C you need? you could also try to lap such a cooler and your cpu, if you trust yourself enough to do it. another tim could get you some more degrees too, i don´t like the ocz tim..
post #6 of 13
Thread Starter 
I have the most up to date BIOS.

I have lapped my CPU. I dont think my Cooler needs lapping. I'm pretty confident my Cooler is quality. It is right up there with the Silver Arrow and Noctua. I even saw 1 benchmark test that showed it beat out the Silver Arrow by about 2C.

Apparently, Aida64 reads the CPU temp sensor, and it is a good 5C cooler than my highest Core. I am willing to try another program to read teh CPU sensor temp, if Aida64 isn't sufficient.
Edited by Blacklac - 2/7/11 at 7:40am
    
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post #7 of 13
Thread Starter 
Quote:
Originally Posted by KingT;12294850 
Intel states Tcase temp of 62C for Q6700 which is not a core temperature but reading of a sensor in the center of IHS..

Now that Q6700 G0 has Tjmax = 90C and that is max operating core temperature stated by Intel..

For safe 24/7 usage keep your core temperatures under 75C at all time..

Also when using CoreTemp program make sure that your Tjmax is set to 90C for accurate readings..

If it says Tjmax=100 then just acknowlege that your actual core temperature is 10 lower than what CoreTemp reads..

CHEERS..

Well than, Coretemp is 100 TjMax. So that explains why Aida64 is reading a good 10C lower. So, in that case, my Core's never passed 52C! lol.

Wait, does that even matter? I'm not set for CoreTemp to read "Distance to TJMax".
Edited by Blacklac - 2/7/11 at 7:44am
    
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post #8 of 13
Quote:
Originally Posted by Blacklac;12295086 
Well than, Coretemp is 100 TjMax. So that explains why Aida64 is reading a good 10C lower. So, in that case, my Core's never passed 52C! lol.

Yeah just keep your core temps under 75C and you're safe..

CHEERS..
     
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post #9 of 13
Quote:
Originally Posted by Blacklac;12295032 
I have the most up to date BIOS.

I have lapped my CPU. I dont think my Cooler needs lapping. I'm pretty confident my Cooler is quality. It is right up there with the Silver Arrow and Noctua. I even saw 1 benchmark test that showed it beat out the Silver Arrow by about 2C.

heatsink got to be lapped also to truly fit on the cpu with most of it´s mass.
apropos mass, more mass and means more place for heat migration.. look, compare to yourself you cpu and the mugen2 for eg. some tests are sometimes stupidly done and tend to distort the laws of physics smile.gif


EDIT: if you are not sure about your temps go to realtempsettings and set tho sho distance to tjmax.. keep it 25-30° not lower! for 24/7 use..
Edited by smex - 2/7/11 at 7:51am
post #10 of 13
Thread Starter 
Well, I'd like to get my Core temps more accurately, but for now it doesn't matter as it is clearly under its limits but apparently something else can't handle the stress/heat. I tend to think Dragosmp is on the right track.
    
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