Temps for Q6700 vs. QX6850

TheMaestro · 10-18-2007, 01:00 PM

My custom-built PC was running a Q6700 with a Thermalright Ultra 120 Extreme heatsink. (The heatsink is irrelevant, but it is rated as one of the best air-cooling solutions out there.) I was getting a CPU temp of 32C at idle. (I don't know what the load temps were.) Next, I upgraded to a QX6850. (I didn't do the work, the OEM did.) Same heatsink, same voltage, no overclocking. Now I'm getting a CPU temp of 46C at idle and 60C at load.

Does the processor (Q6700 vs QX6850) alone explain the big jump in temps? Or is it likely that the heatsink wasn't installed well, and the temps can be lowered by reseating the heatsink? Finally, does anyone think the temps now (46C to 60C) might be harmful to the processor over time or cause processor to decay more quickly?

Thanks.

lancec2c30 · 10-18-2007, 01:10 PM

It is right at the limit of the cpu. I think that something is wrong. At stock settings with that cpu cooler you should be getting better temps. You may need to reseat the heatsink with some quality thermal paste.

Andyf · 10-18-2007, 01:31 PM

Higher temperatures are bound to affect the component life, although seeing as CPUs should last 10years, its not a huge worry unless you are actively damaging the component with very high temperatures.

You could also check that your fan is working properly and getting a good supply of air, and that the heatsink fins aren't clogged with dust (sorry if this is obvious, just making sure).

Did you clean the heatsink contact surface before re-fitting to your new CPU?

Do you know the stepping revision of both CPUs?

TheMaestro · 10-18-2007, 01:37 PM

This is a brand new custom-built OEM computer. When I received it, MoBo was defective. When they swapped MoBo, I bought a CPU upgrade. I suspect heatsink wasn't cleaned well before reseating.

Should the Q6700 and QX6850 run at the same CPU temps? Or are we talking a few degrees C difference?

Is 60C at load a big problem, such that I should return for reseating heatsink immediately?

mgcook · 10-18-2007, 02:00 PM

the q6700 should run hotter at the same speeds, since its a B3 stepping and the QX6850 is a G0

i'd try to remount the HSF with some MX-2

and on a G0 cpu, intels recommended limit is 71*C. anything after that and you will get CPU throttling

Andyf · 10-18-2007, 02:23 PM

60* on load shouldn't be anything to worry about, but 45* idle does seem a little high, given your cooling... it can't do any harm to reseat the HSF; why not do that? The problem will really arise when you start to overclock things, as those temperatures will go up.

As mgcook says, a good thermal compound is really a must, given the thermalright 120 and the CPU that you are using (if only just to justify the extreme expense!).

Artic MX-2 would be at the top of your list, but Arctic MX-1 and Arctic silver 5 are also good.

Preacher · 10-18-2007, 02:25 PM

I would suggest Arctic silver 5 5 bucks, works like a charm.

TheMaestro · 10-18-2007, 02:51 PM

By the way, the system temp is 32C. The GPU is between 60 and 80C. The CPU is between 46 and 60C.

vernong1992 · 10-18-2007, 03:23 PM

Quote:

Originally Posted by Preacher

I would suggest Arctic silver 5 5 bucks, works like a charm.

why not MX-2??

TheMaestro · 10-18-2007, 03:58 PM

What's the difference between MX-2 and Arctic Silver 5?

10-18-2007, 01:00 PM	#1 (permalink)
TheMaestro Junior Techie Join Date: Oct 2007 Posts: 59	Temps for Q6700 vs. QX6850 My custom-built PC was running a Q6700 with a Thermalright Ultra 120 Extreme heatsink. (The heatsink is irrelevant, but it is rated as one of the best air-cooling solutions out there.) I was getting a CPU temp of 32C at idle. (I don't know what the load temps were.) Next, I upgraded to a QX6850. (I didn't do the work, the OEM did.) Same heatsink, same voltage, no overclocking. Now I'm getting a CPU temp of 46C at idle and 60C at load. Does the processor (Q6700 vs QX6850) alone explain the big jump in temps? Or is it likely that the heatsink wasn't installed well, and the temps can be lowered by reseating the heatsink? Finally, does anyone think the temps now (46C to 60C) might be harmful to the processor over time or cause processor to decay more quickly? Thanks.

10-18-2007, 01:10 PM	#2 (permalink)
lancec2c30 Future ex-member Join Date: May 2006 Location: Chehalis, WA Posts: 4,016	Re: Temps for Q6700 vs. QX6850 It is right at the limit of the cpu. I think that something is wrong. At stock settings with that cpu cooler you should be getting better temps. You may need to reseat the heatsink with some quality thermal paste. __________________ XP Pro \| Vista Home Premium \| Linux Ubuntu 7.10 s939 X2 3800 Toledo @ 2.6ghz \| evga 7900gs \| 320gig + 80gig wd \| 1gb Ram \| Abit KN8 SLI 3.1ghz achieved. 70K F@H member..............still waiting for the "iRACK" Norcent will not be forgotten.

10-18-2007, 01:31 PM	#3 (permalink)
Andyf Super Techie Join Date: Aug 2007 Location: UK Posts: 485	Re: Temps for Q6700 vs. QX6850 Higher temperatures are bound to affect the component life, although seeing as CPUs should last 10years, its not a huge worry unless you are actively damaging the component with very high temperatures. You could also check that your fan is working properly and getting a good supply of air, and that the heatsink fins aren't clogged with dust (sorry if this is obvious, just making sure). Did you clean the heatsink contact surface before re-fitting to your new CPU? Do you know the stepping revision of both CPUs? __________________ Motherboard: Asus P5K deluxe Wifi AP CPU: Intel Q6600 Core 2 Quad SLACR (G0) @ 3.2 Ghz HSF: Thermalright Ultra 120 Extreme/ Scythe S-Flex 1200rpm/ Arctic MX-2 RAM: 2Gb (2x1Gb) Crucial Ballistix DDR2 800Mhz (PC2 6400) @5-5-5-15; 2.2V; 1:1 GPU: eVGA Geforce 9800 GTX stock 'Its like having a jet engine next to your ear' PSU: Corsair HX520W HD: 1xSeagate Barracuda 500Gb 7200.10 Case: Antec nine hundred

10-18-2007, 01:37 PM	#4 (permalink)
TheMaestro Junior Techie Join Date: Oct 2007 Posts: 59	Re: Temps for Q6700 vs. QX6850 This is a brand new custom-built OEM computer. When I received it, MoBo was defective. When they swapped MoBo, I bought a CPU upgrade. I suspect heatsink wasn't cleaned well before reseating. Should the Q6700 and QX6850 run at the same CPU temps? Or are we talking a few degrees C difference? Is 60C at load a big problem, such that I should return for reseating heatsink immediately?

10-18-2007, 02:00 PM	#5 (permalink)
mgcook Monster Techie Join Date: Jul 2007 Location: North Carolina Posts: 1,732	Re: Temps for Q6700 vs. QX6850 the q6700 should run hotter at the same speeds, since its a B3 stepping and the QX6850 is a G0 i'd try to remount the HSF with some MX-2 and on a G0 cpu, intels recommended limit is 71*C. anything after that and you will get CPU throttling

10-18-2007, 02:23 PM	#6 (permalink)
Andyf Super Techie Join Date: Aug 2007 Location: UK Posts: 485	Re: Temps for Q6700 vs. QX6850 60* on load shouldn't be anything to worry about, but 45* idle does seem a little high, given your cooling... it can't do any harm to reseat the HSF; why not do that? The problem will really arise when you start to overclock things, as those temperatures will go up. As mgcook says, a good thermal compound is really a must, given the thermalright 120 and the CPU that you are using (if only just to justify the extreme expense!). Artic MX-2 would be at the top of your list, but Arctic MX-1 and Arctic silver 5 are also good. __________________ Motherboard: Asus P5K deluxe Wifi AP CPU: Intel Q6600 Core 2 Quad SLACR (G0) @ 3.2 Ghz HSF: Thermalright Ultra 120 Extreme/ Scythe S-Flex 1200rpm/ Arctic MX-2 RAM: 2Gb (2x1Gb) Crucial Ballistix DDR2 800Mhz (PC2 6400) @5-5-5-15; 2.2V; 1:1 GPU: eVGA Geforce 9800 GTX stock 'Its like having a jet engine next to your ear' PSU: Corsair HX520W HD: 1xSeagate Barracuda 500Gb 7200.10 Case: Antec nine hundred

10-18-2007, 02:25 PM	#7 (permalink)
Preacher Master Techie Join Date: Aug 2006 Location: Ra'anana, Israel Posts: 2,270	Re: Temps for Q6700 vs. QX6850 I would suggest Arctic silver 5 5 bucks, works like a charm. __________________

10-18-2007, 02:51 PM	#8 (permalink)
TheMaestro Junior Techie Join Date: Oct 2007 Posts: 59	Re: Temps for Q6700 vs. QX6850 By the way, the system temp is 32C. The GPU is between 60 and 80C. The CPU is between 46 and 60C.

10-18-2007, 03:58 PM	#10 (permalink)
TheMaestro Junior Techie Join Date: Oct 2007 Posts: 59	Re: Temps for Q6700 vs. QX6850 What's the difference between MX-2 and Arctic Silver 5?

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