[usp8riot]

I've tried attaching the heatsink and reapplying Arctic Silver 3 four times already and I can't get any better than 45c with speedstep enabled and like 53c without it at idle. Then running the latest Prime95 I jump up to 77c full load. Although for most any applications so far, my temps haven't went over 55c besides Prime95. I am using core temp, btw.

But a lot of people with this heatsink are reporting lower temps. Is there an explanation for a 20+ increase in temps running full load and a high idle temp? My room is probably 65f and I have 5 case fans. The temps seem pretty cool inside the case. Is it a bad CPU? Should I try lapping the heatsink and/or CPU? From what I can feel and see, the CPU and heatsink seem pretty flat as it is. I supposedly can tolerate these temps if the CPU can but I'd like it to last me a good year.

[ericware]

What i can suggest is buying a U120E, i run my Q6600 at 1.475 vcore and my room temp in afternoon is around 39 degree, still my maxload is 63 degree, i posted some pictures in intel cpus thread before.

Notes: i haven't lapped anything yet.

[usp8riot]

Right now I'm sitting on 43 idle with all my fans on low at my current overclock. I guess it's not too bad. But then I run Prime95 and after a good minute, it's on the verge of 80, at which point I stop it. A 30+ degree difference in under 30 seconds and 20 degree difference within the first few seconds. What could account for such a divergence in temps?

[Damenshon]

I have a similar problem. I don't know if the core reports the temp wrong or something but my processor seems toasty (according to coretemp) but I find it hard to believe since im running watercooling and the radiator feels nothing like 45c. I like to pretend that its 15c cooler but who knows?? maybe it is really hot and im screwing over my processor.

I have a B3 running at 3.0ghz. at some automatic voltage...

[phu]

I guess like other guys mentioned in other threads: Every chip is different.

I have a G0 Q6600 too and to run 3.6 ghz, I have to use 1.55V. The temp goes up to around 74C when running prime. My room temp is around 76F.

[usp8riot]

Rather than make a new thread, I'll just bump this. I lapped both my cpu and heatsink lastnight and I'm still idling at 45c. Any suggestions? I didn't worry much before because nothing stressed all my cores until I started doing some video encoding and with all cores maxed, the temps still get in the high 70's. And when I do no overclocking/overvolting at all, I reach almost 70c under load.

[bing]

Click my sig on "Intel UVOC", try it and see what is your delta temp between idle/load, you will have a clue how good it is compared to others, and should be around 9 degrees Celcius if the cooling is working properly.

[orion456]

Idling on a G0 @ 45c in a 65f room just isn't right.

Put the stock heatsink on. Make sure you don't use too much Arctic Silver and you apply it according to the instructions for a thin line. Let us know your stock temperatures.

[usp8riot]

Originally Posted by bing

Click my sig on "Intel UVOC", try it and see what is your delta temp between idle/load, you will have a clue how good it is compared to others, and should be around 9 degrees Celcius if the cooling is working properly.

I've been running Prime stable for 30 minutes at the lowest voltage, which is 1.21 and the highest I'm at so far is roughly 3 ghz, 3.2 was too much for it. Still, lowest voltage on my board and I'm 61c under load. I'm not sure if I just wound up with a ****ty G0 or what. I've lost 600mhz, and when all cores are under load, that's 2.4ghz I've essentially lost which is easily attainable with this cpu and decent cooling. I'd almost rather accept the high temps than lose that much. I got Prime stable at 3.6 but 80c under load is just unacceptable so I'm trying to do what I can to refrain from killing my precious mhz.

Idling on a G0 @ 45c in a 65f room just isn't right.

Put the stock heatsink on. Make sure you don't use too much Arctic Silver and you apply it according to the instructions for a thin line. Let us know your stock temperatures.

Yes, the room temp is about 65f. Got the window open and enjoying the cool weather. I've used so much AS by now, applying and reapplying, I ran out and just left with the Zalman stuff my HS came with so I'd have to use that if I reapply a HS. I may try it later but there's not many parts that can go wrong with a HS so I'm blaming my ****ty cpu for now.

I wonder if I should re-lap my cpu/hs with higher grit sandpaper. I used 600 grit as per instructions on the front page and it mentioned there's negligible performance to go any higher according to many debates discussing it.

[satandole666]

Originally Posted by usp8riot

Rather than make a new thread, I'll just bump this. I lapped both my cpu and heatsink lastnight and I'm still idling at 45c. Any suggestions? I didn't worry much before because nothing stressed all my cores until I started doing some video encoding and with all cores maxed, the temps still get in the high 70's. And when I do no overclocking/overvolting at all, I reach almost 70c under load.

So at stock volts/frequency you were hitting 70c load on an aftermarket cooler? That would probably mean throttling on the stock intel cooler which is reason for RMA/return. If the airflow is good like you claim then it probably is a bad chip. The bad news is you can't exchange it now that you lapped it.

Is this right or did I miss something?

[orion456]

I wonder if I should re-lap my cpu/hs with higher grit sandpaper.

Actually your idle temps are 53c without speedsetp, which is even worse.

It's possible your heatsink isn't working properly. Maybe the base isn't pushed hard enough against the CPU, maybe your heat tubes aren't transfering the heat properly or inefficiently. Maybe the fan is not operating to specs. That's why I would like to see the results with a stock cooler. In my experience, the stock cooler will do about 45-50c idle and 60-65c load. If your stock HS does the same, then you can suspsect your after market HS is a dud. The thermal paste won't make that much difference since AS5 takes 200 hours to cure to get the full benefit.

One thing, I have used a single tube of AS5 for something like 30 installs, so if you have used a whole tube for 5 installs, then you might be using too much; which can also cause poor results.

[usp8riot]

So at stock volts/frequency you were hitting 70c load on an aftermarket cooler?

Maybe low 60's, I guess I was exaggerating or confused a bit on that. I'm at 68c under full load with P95, 1.25v and 3.3ghz right now. Maybe I should be happy with that. After all, overclocks aren't guaranteed by Intel. And I can still run my fans low enough they're hardly audible. Turning them full blast gets me down to almost 60c but the full-time noise just isn't worth it.

I'm just a bit disappointed at what I bought considering it should oc to 2.6 easily and with good temps when I could've saved some $ and got the same oc and temps perhaps with cheaper hardware.

t's possible your heatsink isn't working properly. Maybe the base isn't pushed hard enough against the CPU, maybe your heat tubes aren't transfering the heat properly or inefficiently. Maybe the fan is not operating to specs. That's why I would like to see the results with a stock cooler. In my experience, the stock cooler will do about 45-50c idle and 60-65c load. If your stock HS does the same, then you can suspsect your after market HS is a dud. The thermal paste won't make that much difference since AS5 takes 200 hours to cure to get the full benefit.

Possible to RMA a lapped HS? If not, I don't guess it's worth trying the stock then to see if the HS is bad, only for reasons of curiosity. Encoding the same 14gig DV movie takes about 30 minutes at 3ghz, 25 minutes at 3.3ghz, and as I recall, 20 minutes at 3.6. That's all rough estimations from recollection. So real world, it's not too big a deal but as always, extra mhz are always good.

And to note, the tube of AS3 I have is like 4 years old and I've used it many times. Any time I had to reapply it, it was usually because I put too little so I think I got that down pat now.

[Dragonprince]

No you cant return a lapped processor. Also I'd like to point out that too much attention to temp is pointless when over clocking. If the processor is stable then its stable....temp is a secondary concern if stability is achieved. I say this because most people, and especially over clockers, rarely keep cpu's more than a year or two. Temp only becomes an issue when it will shorten the life of the processor from its normal 5-10yr life down to 6 months or less. I seriously doubt your CPU will be under a load like P95 for the next 6 months straight so I feel your concerned about the wrong issue. Focus on stability. Another point often over looked is we, as a group, for years relied on the temp readings taken either under the cpu in the socket or from an after market temp probe outside the heatsink. TAT reading from inside the heat spreader directly on the core will show high temps....on a Quad I doubt 70c is too much heat....Honestly I dont even have a fan on my U120E with my C2D E6600 at 3 Ghz...I hit 70c all the time and am completely stable...

[orion456]

Originally Posted by usp8riot

I'm at 68c under full load with P95, 1.25v and 3.3ghz right now. Maybe I should be happy with that.

Wait a sec.....68c @ 3.3 isn't bad at all. I thought your 68c was a stock speeds, which would be horrible. But, your system is normal and getting decent termperatures especially considering the HS you picked is churning all that hot air back in on itself. You need an exhaust duct to cool things down and makes sure cool fresh air gets into the case.

[usp8riot]

From what I've seen, that's pretty bad, especially considering my room was a little on the cool side then. I also have to up the voltage to 1.4 for 3.6ghz and then I reach 85c on Prime. Something's wrong somewhere and I've yet to figure it out.