E8400 temps are uneven.

UglyChild · 02-12-08, 01:19 PM

Im using CoreTemp 0.96.1 to read the temps of my CPU. At idle; Core 0 shows temp of 20C, Core 1 shows temp of 32C. At full load temps are only 5C apart.

I remounted and reapplied thermal paste few times, and temps are still the same. Is this common thing for this CPU?

Coreyhm1 · 02-12-08, 01:20 PM

Its normal, mine reads 7c difference

I think its just reporting the temps wrong

meionm · 02-12-08, 01:21 PM

I get 5-10c difference and none of the cores ever idles below 42c

UglyChild · 02-12-08, 01:56 PM

Cool, thanks. At least i dont have a bad CPU.

thideras · 02-12-08, 02:01 PM

Quote:

Originally Posted by Coreyhm1

I think its just reporting the temps wrong

Nope, its correct. It is just the difference in quality of each processor (less contamination = lower temps???

) and the quality of the IHS installation. Mine are about 8 different on my quad; Core 0/1 63c load while Core 2/3 58c load.

Coreyhm1 · 02-12-08, 03:14 PM

Quote:

Originally Posted by meionm

I get 5-10c difference and none of the cores ever idles below 42c

I get the SAME thing.

Quote:

Originally Posted by thideras

Nope, its correct. It is just the difference in quality of each processor (less contamination = lower temps???

) and the quality of the IHS installation. Mine are about 8 different on my quad; Core 0/1 63c load while Core 2/3 58c load.

Who knows, allot of people are getting the same exact temp readings on different coolers / clocks / voltages, thats the only thing that makes me wonder if its poor software support.

The "CPU" temp for me, which is the bios reading, fluctuates to voltage and load changes realistically. But thats not the the core temps..

(it reads 28c idle and about 45c load)

Maybe Intel will have an answer for us one day.

Spawn-Inc · 02-12-08, 03:29 PM

on my quad there all 37 accept for core 2, its 38

on load (prime95) i get 49 on cores 0 and 2, 47 on the other 2 cores so mine are all pretty close.

thideras · 02-12-08, 04:02 PM

Quote:

Originally Posted by Coreyhm1

Who knows, allot of people are getting the same exact temp readings on different coolers / clocks / voltages, thats the only thing that makes me wonder if its poor software support.

The "CPU" temp for me, which is the bios reading, fluctuates to voltage and load changes realistically. But thats not the the core temps..

(it reads 28c idle and about 45c load)

Maybe Intel will have an answer for us one day.

If you look at the way the software works and what it reads, you will come to the conclusion that it isn't off, it can't be. If it was off on one, it would be off the same amount on the others.

Unless they completely revamped the way they detect temps, I very much doubt it is off. You could ask "The Coolest" here on OCF since he wrote CoreTemp.

Coreyhm1 · 02-12-08, 04:34 PM

Yeah, i'm not saying they are right or wrong. Its just almost everyone is getting temps that just don't add up..

thideras · 02-12-08, 04:59 PM

Quote:

Originally Posted by Coreyhm1

Yeah, i'm not saying they are right or wrong. Its just almost everyone is getting temps that just don't add up..

It could also be the way they are mounting the chip's IHS...no idea

I just know how and where the program reads and it can't really be off.

DJ WATTS · 02-12-08, 05:45 PM

One of my cores has about 8-10 degrees difference.

It makes sense to me because back in the single core days you could get good chips and average chips which ran cooler or hotter depending on the chip you were lucky (or unlucky enough) to get.

Except now we have the dilema of either having 2 good cores, 2 average cores or a mix of both hence why there could be the difference in temps.

Such is the way with the fabrication process and all that.

thideras · 02-12-08, 07:00 PM

Quote:

Originally Posted by DJ WATTS

One of my cores has about 8-10 degrees difference.

It makes sense to me because back in the single core days you could get good chips and average chips which ran cooler or hotter depending on the chip you were lucky (or unlucky enough) to get.

Except now we have the dilema of either having 2 good cores, 2 average cores or a mix of both hence why there could be the difference in temps.

Such is the way with the fabrication process and all that.

Just so you know, the "dual cores" are 2 cores on one die

Like so:
http://www.pcper.com/images/reviews/...%20-%20CPU.jpg

Monty_Python · 02-12-08, 07:20 PM

mine are nearly the same they vary by a degree or so C. Mostly the same

tranceaddict · 02-12-08, 09:08 PM

My temps are 5-6C apart during IDLE and 8-10C during LOAD.

02-12-08, 01:19 PM	Thread Starter #1
UglyChild Member Join Date: May 2006 Location: Mother Russia	E8400 temps are uneven. Im using CoreTemp 0.96.1 to read the temps of my CPU. At idle; Core 0 shows temp of 20C, Core 1 shows temp of 32C. At full load temps are only 5C apart. I remounted and reapplied thermal paste few times, and temps are still the same. Is this common thing for this CPU? Last edited by UglyChild; 02-12-08 at 01:54 PM.
	QUOTE Thanks

02-12-08, 01:20 PM	#2
Coreyhm1 Member Join Date: Sep 2007 Location: NC	Its normal, mine reads 7c difference I think its just reporting the temps wrong __________________ CPU: C2D E8400 @ 4Ghz / 1.248v (C0) HSF: Apogee GTX MB: Gigabyte X38-DS4 Ram: 2x2GB G. Skill DDR2-1068 HDD: 320GB Seagate PSU: OCZ GameXStream 700w OS: Vista Home Premium 64bit GFX: 2x HD4850 Crossfire LCD: LG 22" L226WTQ
	QUOTE Thanks

02-12-08, 01:21 PM	#3
meionm Member Join Date: Mar 2004	I get 5-10c difference and none of the cores ever idles below 42c
	QUOTE Thanks

02-12-08, 01:56 PM	Thread Starter #4
UglyChild Member Join Date: May 2006 Location: Mother Russia	Cool, thanks. At least i dont have a bad CPU.
	QUOTE Thanks

02-12-08, 03:29 PM	#7
Spawn-Inc Join Date: Jun 2007 Location: Ontario, Canada	on my quad there all 37 accept for core 2, its 38 on load (prime95) i get 49 on cores 0 and 2, 47 on the other 2 cores so mine are all pretty close. __________________ CPU: Core2Quad q6600 G0 3.5GHz@1.4v (highest so far 4.2GHz) GPU: XFX 9800GTX @ 850/1230 Ram: Samsung 4GB (4x1GB) 700MHz PC5300 Mobo: EVGA-NF68-A1 680i (P32) PSU: Enermax Galaxy 850Watt DxX HDD: OCZ 60GB Vertex, WD5001AALS, ST3250410AS, ST3500410AS, ST3500320AS LCD: Samsung 32" LN32A450, Samsung 226BW 22" wide Sound: 2x Logtiech Z 5500/Razor Barracuda HP-1 / AC-1 CPU & GPU: 3x Swiftech MCR320, 2x MCP655, MCW60 R2, Dtek Fuzion V2, 18 high speed yates @ 5v 3Dmark06:17,814 AquaMark:190,865
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E8400 temps are uneven.

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02-12-08, 04:34 PM	#9
Coreyhm1 Member Join Date: Sep 2007 Location: NC	Yeah, i'm not saying they are right or wrong. Its just almost everyone is getting temps that just don't add up.. __________________ CPU: C2D E8400 @ 4Ghz / 1.248v (C0) HSF: Apogee GTX MB: Gigabyte X38-DS4 Ram: 2x2GB G. Skill DDR2-1068 HDD: 320GB Seagate PSU: OCZ GameXStream 700w OS: Vista Home Premium 64bit GFX: 2x HD4850 Crossfire LCD: LG 22" L226WTQ
	QUOTE Thanks

02-12-08, 05:45 PM	#11
DJ WATTS Registered Join Date: Apr 2001 Location: UK	One of my cores has about 8-10 degrees difference. It makes sense to me because back in the single core days you could get good chips and average chips which ran cooler or hotter depending on the chip you were lucky (or unlucky enough) to get. Except now we have the dilema of either having 2 good cores, 2 average cores or a mix of both hence why there could be the difference in temps. Such is the way with the fabrication process and all that.
	QUOTE Thanks

02-12-08, 07:20 PM	#13
Monty_Python Member Join Date: Jun 2006	mine are nearly the same they vary by a degree or so C. Mostly the same Attached Images __________________ CPU:Sandy Bridge I7-2600K(3.4GHz) @ 4.10 Ghz(41x100) 1.264 Vc TEMPS: Ambient temp 25C Idle temp 30C Max temp 65C under 8x Prime load HyperPi: 1M 9.2 sec @ 4.1GHz HSF: Thermalright Venomous X-RT RAM: Mushkin Enhanced Redline 8GB 7-9-8-24 MB: MSI P67A-GD65(B3) GPU:EVGA GTX 580 Classified Ultra 3GB stock 900mhz Monitors: dual displays primay Samsung SyncMaster 2443(24in) Secondary 2333(23inch) HDD/SSD: OCZ Agility-EX Boot/ 2x WD1.5TB Blacks OS: Win7-64 PSU:Cosair Pro AX-1200 1200W CASE:Cosair 700D replaced stock fans 4x Scythe S-flex fans
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02-12-08, 09:08 PM	#14
tranceaddict Member Join Date: Nov 2005 Location: Toronto	My temps are 5-6C apart during IDLE and 8-10C during LOAD. __________________ C2D E8400 - 4150MHz @ 1.37V ASUS P5K-E WIFI Big Typhoon with Scythe S-FLEX fan 2GB Patriot XP PC2-8500 4-4-4-12 @ 2.1V XFX GTX 285 - 720c/1600s/1404m WD Raptor 74gb Corsair 750HX PSU Asus VG236HE 120Hz monitor NZXT Lexa case Razer Deathadder 3500DPI mouse
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