quad core temps

[rhomanski]

I have a intel quad core. According to speed fan core 0 idles at about 122f, while core 1 is at 104f, core 2 and 3 usually at 118f. Is it normal for such a difference between them? At full load core 0 will hit about 142f and the rest spread at the same ratio as at idle. Is this what others with quad cores have?

Regards. Ron.

[washu]

Re: quad core temps

The temp diff between cores is normal. There are just too many variables for them to be all the same.

What I think is abnormal is a rather high idle temp with a very small rise at full load. Mine rises about 50f between idle and load. Yours is only going up 20. Are you sure your PC is actually idle? Also, your HSF could not be working properly and your CPU is idling hot and then throttling at load.

[rhomanski]

Re: quad core temps

Idle is hard to say because there is a lot going on in the background. Speed fan says the processor is not doing much but there is probably 40 processes running in the background, so maybe not idle. I don't game much so full load for me is virus checker when speed fan shows all four cores cooking. It also has the asus EPU-6 engine running which drops the vcore and fan speeds. It's between 120 and 122 right now. But I am watching videos and downloading at the same time. As you can probably tell I'm not too up on this stuff. That's why I come here to learn more. I also go to vintage audio sites and the like. I've still got my commodore 64 and amiga 500. I got my first pc about 8 yrs ago now. Mostly I've stuck with trying to figure out the software but now am trying to get into hardware too. Thanks for the help.

Regards. Ron.

[rhomanski]

Re: quad core temps

Another funny thing is that speed fan has a temp labeled cpu and it sits at 74f. The asus pc probe also reports this temp but doesn't give the core temps. What they cover together always agrees.

Regards. Ron.

[weirdlookinguy]

Re: quad core temps

My Core 2 Duo has (at this very moment) one core at 47C and the other at 36C. I haven't paid much attention to it but there is usually a difference of around 10C between them. So for what it's worth, you're not alone with big discrepancies between cores.

[washu]

Re: quad core temps

74 F is a bit more reasonable idle temp for the off chip sensor. However, it's a big diff between 74 F and 122 F. While the core temp will always be higher, they should be much closer. One (or both) of them is wrong.

I'd suggest trying something else to check your temps. I like hwmonitor, but there are lots out there. Speedfan is good, but it's not always right.

For a full load test, get a stress testing program like prime95. Run it for a while and see where your temps max out. Be aware that if your heatsink or other components are not up to par your computer will likely crash while running it.

[rhomanski]

Re: quad core temps

Thanks guy's. I guess the two in the middle would be the closest? They always are pretty close to each other. I have a noctua cooler. Nc-12 I believe on it. 92mm fan that blows down through the sink. It also blows on the other sinks for the north and southbridge chips. When I built it last year I put three drives stacked and found them too hot to touch. I elongated the screws fordistance. Didn't help. So I mounted a fan under blowing up. Didn't help much either. So then I put another fan under them and built a duct out of cardboard blowing between them. That did the trick. They stay nice and cool now. The fourth drive is under the optical drive by itself and stays cool. I have two 60mm blowing on those drives, two 60mm blowing out of the case, a 90mm blowing in and a 90mm on the psu blowing out and a 90mm on the video card blowing out. The mother board sensor reads about 95f all the time. I've tried quite a few different programs from cnet and they all have read the same. I keep looking for one that can penetrate the raid but haven't found one yet. Hwmonitor did give me the video card which none of the others have. I have it in a silverstone case, Lc10 model. Other than the temps I have no complaints. I had to notch the brace bar to get the noctua cooler to fit, it was too tall. It takes up almost all the space from the psu to the first card and from the drives to the case fans. The only thing I could do is put a thermal cooler or water in it. Thanks for the help guy's.

Regards. Ron.

[Krankshaft]

Re: quad core temps

I just built my new quad 2.5 rig I'm using an Arctic Cooling Freezer 2 Pro on it.

This guy:

http://www.arctic-cooling.com/catalo...h=1_42&mID=304

Inexpensive quiet and cools great. Can't say for overclocking but I never do that personally.

You're lucky one of the temperature sensors on one of the cores of my CPU is stuck at 41 C. A common occurrence actually like many other stuck sensors it works above 41 C.

The sensors weren't really meant for accurate temperature readings according to Intel. They were just to initiate throttling to prevent CPU melt down due to overheating.

My rig consists of an Antec 300 ATX case the CPU cooler mentioned with Arctic Silver 5 applied (the heatsink comes with a stock Arctic Cooling paste that I removed). A total of 4 120mm fans (Yate Loons the low speed model undervolted at 5 volts) 2 in the front blowing in one on the side blowing in cooling the AC passive graphics card cooler and one in the rear blowing out. 1 140mm low speed Yate Loon at stock 12 volts at the top right above the CPU cooler blowing out.

Case airflow can drastically affect your CPU temps. My temps would be alot higher if I just had a cramped Micro ATX case with only one 120 mm fan in the back.

Right now Everest Ultimate edition is reporting the following:

CPU: 37 C

Core 1: 40 C
Core 2: 33 C
Core 3: 36 C

My Core 4 is stuck at 41 C so no reason to list it.

[rhomanski]

Re: quad core temps

That cooler looks pretty nice, especially at the price. This noctua cost me twice as much. Unfortunately my case isn't tall enough for it. It's about the size of a surround sound receiver, to fit in with my home theater system.

Since that's the purpose of the core sensors, it would make sense to have them read higher than actual. A little cushion for extra measure. I'm thinking the cpu sensor is part of the mother board and should be more accurate then. Right now my case is wide open for it's annual cleaning and to watch a fan I believe is going out. I have two thermaltake double ball bearing 60mm blowing in and two IPCQUEEN blowing out and I think one of them is going.

Regards. Ron.

[Krankshaft]

Re: quad core temps

Oh yeah FYI they make a low profile version of this cooler:

http://www.arctic-cooling.com/catalo...th=1_42&mID=70

Whenever I need quiet coolers in my PC to replace those leaf blowers from the factory I go with AC. Their stuff is reasonable, quiet, and drops the temps below stock.

[rhomanski]

Re: quad core temps

That is SWEET! Wish I had known of that before. Thanks friend.

Regards. Ron.