Core Temps quite different!

wrayvon · 30 Mar 2009 at 02:04

Basically when running coretemp, I have noticed that the range between the cores of my Q6600 have about a 12degree range! This seems a lot. Any idea on how I can sort this out? Or is it simply just a resit the heatsink job.

Cheers

ConnectionFX · 30 Mar 2009 at 02:13

not all the cores will function at the same level all the time so you can expect to see a diffrence.

mine runs at

IDLE: 39 31 32 32

LOAD: 51 45 42 43

wrayvon · 30 Mar 2009 at 02:15

Well yes, I assumed this, but I thought that a difference in 12degrees seems quite a lot. This is when idleing too.

Ben M · 30 Mar 2009 at 02:59

You can lapp it if it really bothers you. That'll generally lower temperatures as well, but it definitely voids your warranty. And you'll need to do your heatsink as well.

FaceplantSi · 30 Mar 2009 at 08:23

You need to check your temps under load as well because sometimes you can get a stuck sensor - it will work fine above a certain temp but then as the chip cools it 'sticks' while the other 3 cores continue to decrease. Generally it's not too much to worry about as long as your load temps are acceptable. You should only really need to lap if you're OC'ing and all your temps are too high under load and thus your OC is not viable - generally people who lap are after every last MHz from their OC.

BeeP · 30 Mar 2009 at 08:41

Mines are the same idle, there is one core that is about 5C above the rest, this evens out at 100% load tho.

ConnectionFX · 30 Mar 2009 at 12:09

i dont think he has anything too worry about. but please post your complete temps

idle & load.

Thanks

Admiral Huddy · 30 Mar 2009 at 12:12

12 does seem to be a bit excessive to be honest. Remove the HSF and check the IHS for anywhere where no contact. If all looks ok, reapply your TIM application, making sure there is a thin layer of paste all over the IHS. Remember though, too much is just as bad as having none.

Wizardskills · 30 Mar 2009 at 12:34

12 degrees is to much, something is amiss. Either the heat sink isnt set right, there isn't an even spread of thermal compound or the heat sink IHS are concave/convex. What heat sink do you have? Also idle/load temps would also be useful.

wrayvon · 30 Mar 2009 at 13:40

Ok thanks so far guys. My temps are as follows:
Idle - 37 32 24 25
Load (all 100% using Prime95) - 81 78 62 59

My load looks incredibly high, but I'm sure its safe to say there never all going to be on 100% useage at the same time.

My cooler is a Freezer 7 pro.

EDIT: What programs do you suggest I use to test my LOAD temps?

Wizardskills · 30 Mar 2009 at 14:39

Core temp to get the readings. 81 & 78 is far to hot. 62 & 59 is fine at your overclock with that cooler. 70+ degrees will be doing damage to the cpu over a period of time so i would look into it.

It look to me like you heat sink isn't making proper contact with the cpu, you may want to try re-setting the heat sink and re-applying the thermal paste.

magicroundabout · 30 Mar 2009 at 14:45

i get this with my E8400 and have reseated it loads of times but still the same results.

Admiral Huddy · 30 Mar 2009 at 14:46

As said before, take the HSF off and you'll see if there is no contact.

You can see my Q6600 wasn't making good contact bottom right.. This was before it was lapped:

wrayvon · 30 Mar 2009 at 14:47

Wizardskills said:
Core temp to get the readings. 81 & 78 is far to hot. 62 & 59 is fine at your overclock with that cooler. 70+ degrees will be doing damage to the cpu over a period of time so i would look into it.

It look to me like you heat sink isn't making proper contact with the cpu, you may want to try re-setting the heat sink and re-applying the thermal paste.

Ok I shall try this again, cheers. I'l let you know how it goes! (when I get round to doing it

)

magicroundabout · 30 Mar 2009 at 14:49

Admiral Huddy said:
As said before, take the HSF off and you'll see if there is no contact.

You can see my Q6600 wasn't making good contact bottom right.. This was before it was lapped:

so without lapping it what is the best way to make sure the whole cpu gets good contact?

CurlyWhirly · 30 Mar 2009 at 14:52

BeeP said:
Mines are the same idle, there is one core that is about 5C above the rest, this evens out at 100% load tho.

2 of my cores are as much as 13C higher than my other 2 but, like you, this all evens out when under load as mentioned in my thread here (from post #10)

I would say that you have nothing to worry about

Admiral Huddy · 30 Mar 2009 at 14:52

I'm not sure. Some waterblocks are slightly convex to tackle the problems but I've not heard of any HSFs that do the same. That said, lapping is very very simple. Just take your time.

magicroundabout · 30 Mar 2009 at 14:53

unsure what lapping is tbh :confused:

CurlyWhirly · 30 Mar 2009 at 14:59

magicroundabout said:
unsure what lapping is tbh

http://www.frostytech.com/articleview.cfm?articleID=82

magicroundabout · 30 Mar 2009 at 14:59

found a guide and understand now.
http://forum.overclock3d.net/showthread.php?t=4735

so is this recomended to do on both the cooler and cpu