My X2 4800+ has high temp jumps at max load help. - Page 3

Lead Head · January 7th, 2008

A lot of socket 939 AMDs sometimes had bad thermal contact between the heat spreader and the actual CPU core itself. On socket 939, AMD just essentially put globs of thermal paste on the core, and put an epoxy type substance around the edge of the heat spreader to hold it in place. Sometimes the contact wouldn't be them and you'd get one core that was tons hotter then the other. Some people have reported temps as lower as much as 10*C+ from taking the spreader off, but I don't recommend doing that if you stll have a warranty on your CPU, or do not want to risk killing it .

Now AMD solders the heat spreader onto the core, so the heat transfer is usually a bit better over all

fstroupe · January 7th, 2008

No, the cores are side by side...they are different temps because one is working harder than the other, they never share the work equally. Even the Core 2 Duos and Core 2 Quads don't share the work equally.

I have an AMD X2 4400+ Toledo core. It is basically the same as yours, but clocked slower. (that is an oversimplication, but good enough for this example) With room temp at 72F, I get a load temp of 47-48C. With the room at 78-80F, the load temp climbs to 50-52C, maybe as high as 55C at times. Room temp has a tremendous effect on CPU temp.

Depending on the case (I change cases quite a bit, and if one has a window fan, I usually use it too), I always have a 120mm fan front and back, with them running at +5v. (half speed) With my rather cool GPU (due to about twice the cooler than is necessary), that suffices, even with my passive motherboard chipset cooling.

If your case is sufficiently ventilated, you should experience case temps just a few degrees C higher than room temp.

Lead Head · January 7th, 2008

I'm sorry thats incorrect. It wouldn't account for a 10*C+ difference in temps. If the IHS is making proper contact, both cores should be about the same temperature. Back when this site was first starting out, someone posted an article about popping the IHS and what kind of temp drops they got, I have no idea if it is still on here though

EDIT: Your temps could just be a badly shaped IHS like you said, my opteron 165 @ 2.7GHz loaded around 55-56*C tops. A way to find out if your IHS is concave/convex is to take some tim and spread it very thinly on something flat, then put the CPU IHS side down onto the TIM and give it a little pressure, then pull it off, wherever the TIM sticks to is higher then the rest, and should be lapped down, if you want to risk it

screwballl · January 7th, 2008

Quote:

Originally Posted by Quakindude

fstroupe...I'd trust CoreTemp waaaaaay before I'd trust any mobo manufacturers temp reading app. But then, I'd trust Nvidia's temp readings before trusting Speedfan these days.

CoreTemp is pretty damn accurate. More so than Nvidia and Asus app's IMHO.

right but if the BIOS readings are off or reading the wrong sensor then it doesn't matter what temp program you use as they will all be off or read different depending on the sensors...

Lead Head · January 7th, 2008

Quote:

Originally Posted by screwballl

right but if the BIOS readings are off or reading the wrong sensor then it doesn't matter what temp program you use as they will all be off or read different depending on the sensors...

Usually the BIOS reads from a sensor that is placed somewhere within the CPU, that its not necessarily the actual core sensors . My BIOS reads around 10-15*C hotter then what coretemp reads, and i have confirmed coretemps reading with my DMM before.

Widjaja · January 7th, 2008

I used to have a fan on the window but the Tuniq Tower gets in the way so all I have is a 80mm grill in the center of my window case which my Tuinq Tower sucks air through and thats about it.
I'm sure it's sucking more hot air off other the hardware though.

Lead Head what is a DMM?

Lead Head · January 7th, 2008

Quote:

Originally Posted by Widjaja

I used to have a fan on the window but the Tuniq Tower gets in the way so all I have is a 80mm grill in the center of my window case which my Tuinq Tower sucks air through and thats about it.
I'm sure it's sucking more hot air off other the hardware though.

Lead Head what is a DMM?

Digital Multi Meter, I have a temp probe for mine.

Widjaja · January 7th, 2008

How does the DMM compare to coretemp 0.96?
I was looking at getting a Infrared temp reader but it's a bit pricy considering I'd only be buying it for the CPU temperature.

I decided to take off the side panel to see what would happen.
I ended up geting a 4-5 degree drop in Orthos.

Craigleberry · January 7th, 2008

Never know it may reduce your temps a lot if you try a aftermarket gpu cooler.??
Or something that can get that hot air out and away from the cpu in any case

fstroupe · January 8th, 2008

If you can take off a side panel and get a significant drop in temps (more than 1C), you have a definite ventilation problem.

January 7th, 2008	#21
Lead Head Join Date: May 2006 Location: Rhode Island USA Posts: 1,716	Re: My X2 4800+ has high temp jumps at max load he A lot of socket 939 AMDs sometimes had bad thermal contact between the heat spreader and the actual CPU core itself. On socket 939, AMD just essentially put globs of thermal paste on the core, and put an epoxy type substance around the edge of the heat spreader to hold it in place. Sometimes the contact wouldn't be them and you'd get one core that was tons hotter then the other. Some people have reported temps as lower as much as 10*C+ from taking the spreader off, but I don't recommend doing that if you stll have a warranty on your CPU, or do not want to risk killing it . Now AMD solders the heat spreader onto the core, so the heat transfer is usually a bit better over all Opteron 64 165--1.5GB DDR--ECS KA1 MVP(thanks HL!)--x1800GTO 256MB--Seagate 320GB SATA--Antec 550 Watt--Antec P180

January 7th, 2008	#22
fstroupe A Lonely Geek Join Date: Aug 2007 Location: NE Mississippi Posts: 291 Blog Entries: 3	Re: My X2 4800+ has high temp jumps at max load he No, the cores are side by side...they are different temps because one is working harder than the other, they never share the work equally. Even the Core 2 Duos and Core 2 Quads don't share the work equally. I have an AMD X2 4400+ Toledo core. It is basically the same as yours, but clocked slower. (that is an oversimplication, but good enough for this example) With room temp at 72F, I get a load temp of 47-48C. With the room at 78-80F, the load temp climbs to 50-52C, maybe as high as 55C at times. Room temp has a tremendous effect on CPU temp. Depending on the case (I change cases quite a bit, and if one has a window fan, I usually use it too), I always have a 120mm fan front and back, with them running at +5v. (half speed) With my rather cool GPU (due to about twice the cooler than is necessary), that suffices, even with my passive motherboard chipset cooling. If your case is sufficiently ventilated, you should experience case temps just a few degrees C higher than room temp. Last edited by fstroupe; January 7th, 2008 at 04:50.

January 7th, 2008	#23
Lead Head Join Date: May 2006 Location: Rhode Island USA Posts: 1,716	Re: My X2 4800+ has high temp jumps at max load he I'm sorry thats incorrect. It wouldn't account for a 10C+ difference in temps. If the IHS is making proper contact, both cores should be about the same temperature. Back when this site was first starting out, someone posted an article about popping the IHS and what kind of temp drops they got, I have no idea if it is still on here though EDIT: Your temps could just be a badly shaped IHS like you said, my opteron 165 @ 2.7GHz loaded around 55-56C tops. A way to find out if your IHS is concave/convex is to take some tim and spread it very thinly on something flat, then put the CPU IHS side down onto the TIM and give it a little pressure, then pull it off, wherever the TIM sticks to is higher then the rest, and should be lapped down, if you want to risk it Opteron 64 165--1.5GB DDR--ECS KA1 MVP(thanks HL!)--x1800GTO 256MB--Seagate 320GB SATA--Antec 550 Watt--Antec P180 Last edited by Lead Head; January 7th, 2008 at 12:13.

January 7th, 2008	#26
Widjaja Join Date: Jan 2008 Posts: 20	Re: My X2 4800+ has high temp jumps at max load he I used to have a fan on the window but the Tuniq Tower gets in the way so all I have is a 80mm grill in the center of my window case which my Tuinq Tower sucks air through and thats about it. I'm sure it's sucking more hot air off other the hardware though. Lead Head what is a DMM? Athlon X2 4800+ Toledo @2.61Ghz Tuniq Tower 120 LFB SilenX iXtrema Pro 120mm intake, Titan 120mm exhaust Foxconn Winfast NF4SK8AA-8EKRS 2X1GB PATRIOT LLK PC3200 2.5-3-2-5 XFX 8800GT 512mb xXx Zalman cooled edition. WD80GB IDE / WD160GB SATA Aduigy ZS Enermax Noisetaker 600W

January 7th, 2008	#28
Widjaja Join Date: Jan 2008 Posts: 20	Some cooling progress How does the DMM compare to coretemp 0.96? I was looking at getting a Infrared temp reader but it's a bit pricy considering I'd only be buying it for the CPU temperature. I decided to take off the side panel to see what would happen. I ended up geting a 4-5 degree drop in Orthos. Athlon X2 4800+ Toledo @2.61Ghz Tuniq Tower 120 LFB SilenX iXtrema Pro 120mm intake, Titan 120mm exhaust Foxconn Winfast NF4SK8AA-8EKRS 2X1GB PATRIOT LLK PC3200 2.5-3-2-5 XFX 8800GT 512mb xXx Zalman cooled edition. WD80GB IDE / WD160GB SATA Aduigy ZS Enermax Noisetaker 600W Last edited by Widjaja; January 7th, 2008 at 20:29.

January 7th, 2008	#29
Craigleberry Join Date: Jan 2008 Posts: 66	Re: My X2 4800+ has high temp jumps at max load he Never know it may reduce your temps a lot if you try a aftermarket gpu cooler.?? Or something that can get that hot air out and away from the cpu in any case CPU-E6750 @3.24 GHz stock volts RAM-Geil 667 @800Mhz GIGABYTE- GA-P35-DS3P THERMALRIGHT IFX-14 CPU Cooler SAPPHIRE X1950 Pro Windows xp pro "If in doubt get a bigger hammer"

January 8th, 2008	#30
fstroupe A Lonely Geek Join Date: Aug 2007 Location: NE Mississippi Posts: 291 Blog Entries: 3	Re: My X2 4800+ has high temp jumps at max load he If you can take off a side panel and get a significant drop in temps (more than 1C), you have a definite ventilation problem.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
BIOS updates HD3800/4800? Drivers AMD?	linuxcrazy	Graphics	5	August 20th, 2008 12:49
Real Temp vs. Core Temp?	PkL728	Overclocking	10	June 17th, 2008 11:19
AREA-51 won't load?	oldman_gamer	Gaming	8	June 9th, 2008 14:16
Core Temp .95.4 will not load	Kent10	Software & OSs	11	November 18th, 2007 12:04
How are Load Temps Measured?	Kent10	Overclocking	14	October 13th, 2007 08:54