Sign in with
Sign up | Sign in
Your question

Core 2 Quad overheating, no overclocking...

Last response: in Overclocking
Share
November 7, 2007 2:43:50 AM

My cpu is going up to 80c before i killed all progs on it. I created a simple 4 threaded java program which causes all 4 cores to operate in an infinite loop. The temperature just keeps rising.

I cleaned the cpu and heatsink provided with the cpu and applied Arctic Silver 5 even used the exact instructions given on their website to ensure i got everything down right.

I am running a Intel Core 2 Quad.
The video card vents to the outside of the case.
The case has a giant powerful fan that does 1100 rpm blowing air in, and a smaller fan out front blowing air out. The case goes with intel's specs for how a case should be designed to give optimal ventilation.

The spec is here:
http://arstechnica.com/guides/buyer/guide-200707.ars/2
Except i am using a core 2 quad not a core 2 duo.

I am NOT attempting to overclock, I just need it operational.

When underclocked due to automatic voltage control on the MB, it runs at about 44-53c (1600mhz) when at full load i killed it at 80c.

Anyone got any ideas? BTW the cpu fan easily does 1200 rpm, and goes up to 1800 with no good effect...
November 7, 2007 3:02:47 AM

Here are some results:
Core temps for each of the core (degrees c)
54 51 47 48 idle
When on full load
90+ 80+ 80+ 80+

I am stumped :( 

November 7, 2007 3:04:02 AM

Sorry I keep forgetting details...

another thing, when i take it off full load temperature drops almost instantaneously to the low readings.
Related resources
November 7, 2007 3:19:36 AM

Perhaps you've got a bad CPU?
November 7, 2007 4:50:18 AM

That is always a possibility. Is there a definitive way to confirm this so that I can convince my retailer to exchange it?
a b à CPUs
a b K Overclocking
November 7, 2007 10:21:31 AM

It clearly seems that your HeatSink/Fan isn't mounted properly. So remove the HSF assembly from over your CPU. Clean the contact surfaces thoroughly with alcohol and a lint-free cloth. Reinstall it properly, with a *little* bit (grain of rice~sized) of high quality thermal grease, like Arctic Silver 5.

How to for the grease: http://www.arcticsilver.com/arctic_silver_instructions....


If you're using the stock Intel HSF, strongly consider replacing it with one of a large number of high quality CPU coolers.

Scott
November 7, 2007 12:10:42 PM

Thanks for the response Scott...

Those are the exact instructions i used to apply the new thermal paste, as they indicate for quad cores we should apply a small line of thermal paste to touch all 4 cores. I cleaned both the core and sink with 91% rubbing alcohol and a lint-free cloth.

It seems odd that the Intel's stock HSF is so inadequate that it cannot even function at base levels (at least adhering to Intel's spec of max 71c operating temp. I would assume that getting a better sink is good to keep temp down even lower, perhaps noise down (there is none), and better for overclocking purposes, but I just want it to work decently w/o overclocking.

There is always a possibility that the heatsink was not correctly mounted. If anyone has mounted this darn quad core, please tell me the best way to do it, those 4 pins are damn tough to snap in. How did you approach snapping that heatsink in without damage to the motherboard? I am pretty sure that I got the installation down well...
November 7, 2007 12:25:50 PM

I hate the snaps.. I never even bothered with the stock cooler, it's barely adequate for the X6800 so I wasn't going to risk it with my quad.

I use the Ultra 120 Extreme.. I doubt you need anything that nuts for just running stock. I would say the best bet is just to get a new CPU cooler.

71 C = TCase which is the temp on the Heat spreader, not the temperature of the cores. The cores won't turn off til 100 C.

My cores were running under 30 C at stock speeds with the Ultra (at idle).

Edit: Also, I didn't apply the AS5 the way they tell you on the site. I applied a very thin line across the die as they show. Then spread it with a credit card until it evenly covered the entire heat spreader and you were unable to see any nickle plating.
a b à CPUs
a b K Overclocking
November 7, 2007 12:53:48 PM

dlikhten said:
Thanks for the response...

There is always a possibility that the heatsink was not correctly mounted. If anyone has mounted this darn quad core, please tell me the best way to do it, those 4 pins are damn tough to snap in. How did you approach snapping that heatsink in without damage to the motherboard? I am pretty sure that I got the installation down well...



The Stock HSF is a a PITA to mount, as I learned when I had a Core 2. "Push through, and a quarter turn clockwise" is simple in real terms. But... The best method I've found is to install the thing before mounting the motherboard so you can visually check the little white inserts are fully showing. If they aren't, then it isn't on there right. And as pointed out alread, the stock thing is only *just* adequate. So I ended up replacing it anyhow. So if anyone knows the engineer who designed the OEM mounting system, do us all a favor and shove nut/bolt up his nose and a tube of AS-5 up his..... nevermind.... Barring that, thank him for all hard work and money spent on designing, testing, and producing something worse than a one cent screw. Look him in the eyes and smile when you do it, willya?

I used 'Plan B' for this last (quad) build: Ordered an aftermarket HSF at the same time as the CPU. Never even took the OEM Piece Of S out of the package.
November 7, 2007 12:54:09 PM

Well, the TCase I had was going over 80c!!! Cores never reached 100c each because i was worried the'd melt so i killed the process causing the heavy load.

Can it be expected for me to run at such high temperatures or am I risking damage to the processor?
November 7, 2007 12:56:00 PM

I don't like running my cores over 60C. Some people may tell you otherwise.
November 7, 2007 1:00:51 PM

Sounds like I should get a cooler :( 

I also have a core 2 duo which i need to assemble (same comp worse cpu) should i expect the same thing? Or can I just use the Intel HSF for that, once again i just need it to work...

Other heatsinks don't have the 4 pins???!?!?!?! If thats the case I am all for it... By god i had an AMD heat sink which just lowers a metal piece and snaps it in no if/ands/or how to snap all 4 in. Worst design IMO
November 7, 2007 1:13:48 PM

I have a Gigabyte Gpower Lite on my P4 LGA775 thats uses the old Socket 478 mounting design. Just has clips... keeps it around 55C under load. It's not overclocked at all.

The Tuniq/Ultra 120 use screws with a mounting bracket.

As far as with the duo the stock cooler should be fine as long as it's mounted properly. Personally I hate using stock coolers.. I think they all suck. Whenever I order a CPU I order a new HSF with it.
a b à CPUs
a b K Overclocking
November 7, 2007 1:40:29 PM

dlikhten said:
Well, the TCase I had was going over 80c!!! Cores never reached 100c each because i was worried the'd melt so i killed the process causing the heavy load.

Can it be expected for me to run at such high temperatures or am I risking damage to the processor?



A Core 2 should idle in the 30's and should not pass the mid-60's under a torture test. Run it as hot as yours, and it will die. Just a question of when.
November 7, 2007 1:41:08 PM

cnumartyr thanks for all your help. I may wind up getting that same cooler... It is compatible with the core 2 duo/quad right? It looks like a much better installation than the darn pins used by the quad.

Ill try one more time to get my heatsink properly installed, if that wont work I guess its new heatsink :( 
November 7, 2007 1:53:21 PM

dlikhten said:
cnumartyr thanks for all your help. I may wind up getting that same cooler... It is compatible with the core 2 duo/quad right? It looks like a much better installation than the darn pins used by the quad.

Ill try one more time to get my heatsink properly installed, if that wont work I guess its new heatsink :( 


The Gpower Lite or the Ultra 120?

I have the Ultra 120 on an overclocked (3.0 GHz) Q6600 and I don't see full loads over 55C.
November 7, 2007 1:54:36 PM

Nice! I just might do that :) 
November 7, 2007 1:57:30 PM

For the fan I used a Scythe Slip Stream @ 90 CFM for the fan. It's suprisingly quiet.

http://youtube.com/watch?v=w2l9zfIgCms

There is the video of what it looks like in the case... Keep in mind it's massive. What motherboard do you have? There are some compatibility issues due to it's size. Just make sure it'll fit first before buying it.
November 7, 2007 2:58:50 PM

Holy crap that is one hudge heatsink!!!

I was going to go w/ Ultra 120...

Mobo: Gigabyte GA-P35-DS3R
Case: Coolermaster Centurion 5

November 7, 2007 3:02:38 PM

I checked Thermalrights website for ya.. It's 100% compatible with the DS3R. If you are ordering it with some paste.. I'd get MX-2 over Arctic Silver 5. No curing time, supposed to be better on air cooling, non-conductive, and has an 8 year life span.
November 7, 2007 3:05:43 PM

I mean it looks like my case has the same dimentions (of course i am using your hdd and dvd drive as a basis for comparison...)

This heatsink does not need the clip-on installation?
November 7, 2007 3:13:35 PM

No, there is a back plate that has screw posts that come up though the push pin holes. After sitting the heat sink on the processor, you slide a bracket over it and expand it. Then it screws into the posts.

It can be a pain, but you know for a fact you get good contact. Just make sure when installing it you just get one started, dont' get it tight before installing the next one. Get all 4 posts in then finger tighten them in a criss-cross fashion. Then I use 4 full turns of the screw driver (1 at a time on each screw) in a criss-cross fashion. Then check to make sure the heat sink is secure.

It works great for me, I hate the push pin and clip design.. I'm a nuts and bolts kinda guy.
November 7, 2007 3:24:09 PM

Agreed...

But before I take drastic measures i am going to make one final attempt to secure my processor with my current sink. I just feel like i am going to crack my mobo if i keep trying...
November 7, 2007 3:25:37 PM

Try evenly spreading the AS 5 over the entire chip before you place the heat sink on it. A very thin layer spread with something flat like a credit card.

That's how I've always put it on.. I don't like the "mash the heat sink onto it" method. It just seems like you don't get as good contact.
November 7, 2007 3:31:00 PM

The idea behind that is that you only want contact on the core, so that the heat goes directly to the sink not spreading evenly... in any case i can try that too :)  it also can create air bubbles when u spread it, when the sink is added there is nowhere for air to escape.
November 7, 2007 10:41:23 PM

Ok, new development...

I took out my mobo, put it on a towel (don't forget to bring a towel, no lint) and snapped all 4 pins into my mobo correctly, made sure all 4 were in correctly and then re-attached my mobo.

The temperatures are now:
40c idle global temperature
65c max stress-test temperature (100% cpu usage on 4 cores for extended time)
A definite improvement...
I guess I might not buy that sink after all... but its definitely a good idea, ur running 60c max and u overclocked by a good 600mhz!!
November 7, 2007 10:48:39 PM

Lol, good job. Glad you got it worked out. I'm running at 3.2 GHz now at 400 MHz Bus. Stable atm... will be priming it over night, haven't hit 60C yet.
November 8, 2007 1:58:04 AM

priming? prime95? humbug, it cant do more than 1 core worth of work...

I can send ya my crummy lill' java prog that will overload any 4-core cpu, wont be good for anything except heating it up. To kill it you must kill the process so do it in command line :) 

this ran for 30 min and my cpu didnt go over 65, before it didnt stop at 80... i need to write a howto for this f-ing processor.

copy this into a file called Crapola.java, if you have jdk just compile it (no dendencies), and then run it.

public class Crapola {

/**
* @param args
*/
public static void main(String[] args) {
Crapola x = new Crapola();
x.new Threadenizer().start();
x.new Threadenizer().start();
x.new Threadenizer().start();
x.new Threadenizer().start();
try{
Thread.sleep(1000000000L);
}
catch (InterruptedException e)
{
System.exit(1);
}
}

class Threadenizer extends Thread{
public void run() {
while(true);
}
}

}
November 8, 2007 2:10:04 AM

Prime95v255 runs 4 worker threads :) 

I have it 100% maxed out on all cores and running error checking to make sure there are no errors. They basically reworked Prime95 for stress testing. If it gets an error it stops the thread and lets you know what happened.



1 Hour and 4 minutes into Prime95 Stability Testing and it's looking good!
November 8, 2007 8:55:01 AM

Guess im not using correct version... ?

BTW: I was using SpeedFan and Core Temp to measure my temperatures, and both give diff numbers...
SpeedFan says my cores are at about 65c Core Temp says at about 75+, though core temp can't pick up my Tjunction at all... Can I trust Core Temp or SpeedFan ?

I am inclined to trust SpeedFan because this tool: EasyTune5 which is from my mobo, is pretty good (though a tad bit slow) at being at same readings as my mobo. The general temp it reports is accurate... And I don't know how I can have my cores at 70c and have a Tjunction of 56c, where as speedfan says its 48-55c cores 56 junction.
November 8, 2007 9:18:57 AM

Well I used their latest version, ran 4x instances and did a heat test, cpu spiked to over 70c in no time... Guess my cooling is still not adaquate...
November 8, 2007 9:37:39 AM

Do you have the B3 or G0 stepping?

Core Temp (Older versions) don't pick up the G0 properly.

http://majorgeeks.com/Core_Temp_d5665.html

Try that link to the Beta 0.95.4 which reads the G0 properly.

Reason I asked... G0 has a Tjunction of 100C and the B3 has a Tjunction of 85C. SpeedFan is consistently reading 15C low on my cores. (So its reading 40 C when the cores are 55C)

My BIOS and Smart Guardian both read Tcase and not Core Temps. I would only trust the new beta Core Temp to properly read your cores. Mine are consistently 10-15C higher than my Tcase (read through the BIOS/Smart Guardian) after stressing.
November 8, 2007 1:00:30 PM

Well the reader that I use most accurately is my motherboard's internals. I set a beep alarm when core is at 70c in my bios.

I am going to ship my processor to retailer for an exchange. This seems rediculous that the processor cannot handle loads without heating up 2 extreme temperatures. Then again intel may be giving a POS heat sink which is JUST enough for casual users, and good enough not to melt the cpu.
November 8, 2007 1:02:59 PM

Tjunction is max temp allowed for a core?

Also can you please tell me your bios set up for your processor? This way if i get that cooler, I can tweak it up too :)  (I am no overclocking expert, far from it)
November 8, 2007 6:50:38 PM

Do you have MSN or AIM? I'd like to talk to you live instead of this forum stuff about that. :) 
November 8, 2007 7:04:48 PM

I recommend ditching the stock cooler. If you have money, Vigor makes incredible fans. As far as the thermal paste, don't just dab it on over the cores. I spread it (in a thin film) over the entire surface of the processor. Why? Because the entire surface gets hot, and if its not all equally venting heat, its not going to vent heat well at all.

Physics.
November 9, 2007 1:28:13 AM

So... I installed a core 2 duo that i had (i have 2 comps actually in the making) under stress it does 61c (this is no ram, all in cache, super heat test). Now this is the same cooler as the one that comes with the quad which has twice the cores so twice the heat... *sigh* i guess its not made for... you know... working :) 

I am thinking of... straightening both surfaces, i forget what its called "officially" in these forums. :p 
November 9, 2007 1:30:11 AM

Well... it kind of is. I don't run my cores over 60C but intel says it's fine.

The temp for the Q6600 G0 is 71C which is the spec for the IHS.
November 9, 2007 2:01:40 AM

if you're a q6600 g0 you're safe under 75 , even up to 80 won't be a disaster though not recommended .. but dude , but dude .. 80+ and 90+ .. it's probably a bad cpu (presuming you have all the cooling installed properly) , you say you haven't overclocked .. just take it back, get a replacement.
November 9, 2007 4:08:18 PM

That is what will be done :( 

Running each core @ 75c won't cause cpu damage?
!