Core 2 Duo Temperature Readings

[ForgetCassettes]

I have some concerns about my overclocked E6400 (8x400). Gigabyte's Easytune software says 33C Idle. My Bios reads that same temperature and Speedfan also gives me that temperature. I tried a new piece of software called "Core Temp" and it reads my temperatures between 46-55C idle. Which temperature is correct? When I run Prime 95, my temps go higher than what I would consider safe according to "Core Temp" but they are fine according to the other programs.

 

[thilanliyan]

Originally posted by: ForgetCassettes
I have some concerns about my overclocked E6400 (8x400). Gigabyte's Easytune software says 33C Idle. My Bios reads that same temperature and Speedfan also gives me that temperature. I tried a new piece of software called "Core Temp" and it reads my temperatures between 46-55C idle. Which temperature is correct? When I run Prime 95, my temps go higher than what I would consider safe according to "Core Temp" but they are fine according to the other programs.

I don't trust Coretemp. Your idle numbers are pretty nice. My 6400 idles around 41 degrees at 8x400.

What cooling do you use?

 

[ForgetCassettes]

I am using a Scythe Ninja. I think my case helps alot with my cooling. I have a Lian Li case with two 120mm fans. The Ninja is so close to the rear fan it's almost like the Ninja has two fans attached to it.

 

[imported_aashburns]

I think there could be a problem with Core Temp. The value sent from the conroe to the motherboard is a negative value below the max temp threshold. I believe Core Temp may have the wrong threshold temperature of 85C instead of 60C (~25C too high). This puts your cpu reading between 21-30C at idle, which is more inline with your gigabyte reading.

 

[ForgetCassettes]

I guess you can't post a thumbnail link to images in the forum?

 

[ForgetCassettes]

Picture of my Ninja in Lian Li Case

 

[phile]

The discrepancy between BIOS, speedfan, etc., and CoreTemp is due to the fact that CoreTemp's reading come from diodes on the CPU die, while the other apps and BIOS read the temp from a diode on the motherboard. It is absolutely normal that CoreTemp's values are higher. For example, here are the idle temps from my E6300:

CPU (mobo diode): 31C
Core1 diode: 42C
Core2 diode: 42C

If your readings resemble these, than everything is normal.

-phil

 

[ForgetCassettes]

Well Intel says the CPU Temp shouldn't go above 61.5C and according to Core Temp, I go beyond that under full load. Should I be worried?

 

[phile]

It would certainly concern me, absolutely. Can you detail your overclocking specs (FSB, vcore, etc.), and describe your cooling solution?

-phil

 

[gobucks]

yeah, i was wondering that as well. my e6400 @ 3.24GHz is hitting about 58C according to easytune, but coretemp says 67C.

 

[phile]

You're running way too hot.

http://processorfinder.intel.com/details.aspx?sSpec=SL9S9

The C2D chips have a Thermal Specification of 61C - any higher and the system may become unstable.

-phil

 

[ForgetCassettes]

Originally posted by: phile
It would certainly concern me, absolutely. Can you detail your overclocking specs (FSB, vcore, etc.), and describe your cooling solution?

-phil

FSB : 400 (x8)
VCore : 1.375
Memory : 2.1V

I'm using a Scythe Ninja+ with the stock 120 fan

 

[vhx]

I have a Scythe Ninja as well. My current idle temps are around 34C, and around 56-60C under Orthos load for more than 30 minutes.

Your temps are pretty similar.

 

[thilanliyan]

Alright even with WATERCOOLING on my E6400, my load temps. at 1.4v and 1.35GHz hit 60 degrees, and idle is down about 5 degrees from my Thermaltake BigTyphoon. Watercooling shouldn't have such a large delta in temperatures should it??

The temps. reported by Coretemp hover around 56-57 degrees at load and drop to about 50 degrees at idle.

Damn, I don't know which program to trust for the temperatures. I hope the temperatures are just being read wrong.

 

[Pabster]

Originally posted by: thilan29
Damn, I don't know which program to trust for the temperatures. I hope the temperatures are just being read wrong.

Just set your finger on the base of the heatsink after a couple hours of Prime95 or SNM.

If you get a burn, it is probably accurate

IMHO anything over 60C is unacceptable.

 

[ForgetCassettes]

I'm leaving mine clocked at 3.2 GHz. I have my VCore lowered down to 1.35V and it's still stable. Under dual Prime 95's, the highest temp I got was 62C. I did a "real world" test by playing Oblivion for a little while and I never topped over 58C. That's the most stressful thing I do with my computer so I feel safe with 3.2 GHz.

 

[thilanliyan]

Originally posted by: Pabster

Originally posted by: thilan29
Damn, I don't know which program to trust for the temperatures. I hope the temperatures are just being read wrong.

Just set your finger on the base of the heatsink after a couple hours of Prime95 or SNM.

If you get a burn, it is probably accurate

IMHO anything over 60C is unacceptable.

I'm using watercooling so no base to touch.

 

[Gutcheck]

I'm also worried about my E6600. I left my PC on for 4 hours, doing nothing, reboot - went to bios and it said my CPU temp was 51 C. Isn't that kinda high? I have a scyth katana on it.

 

[Pabster]

Yeah, 51C is way too high for an idle temperature.

That is what a full load temperature should be with good (high end) air cooling.

 

[Henny]

My E6600 is OC'd to 3.3Ghz@1.475Vcore. Idle temp stay's in the 27-28 range and torture test brings it up to 35-36 degrees. (this is at 19 ambient).

This is with a Scythe Infinity (CPU and HSF lapped). It was at least 10-15 degrees hotter with stock/unlapped HSF. (stock was noisier too).

 

[Kwint Sommer]

Originally posted by: Henny
My E6600 is OC'd to 3.3Ghz@1.475Vcore. Idle temp stay's in the 27-28 range and torture test brings it up to 35-36 degrees. (this is at 19 ambient).

This is with a Scythe Infinity (CPU and HSF lapped). It was at least 10-15 degrees hotter with stock/unlapped HSF. (stock was noisier too).

Nice temps but what program are you using to read them? This thread isn't about bad temps it's about bad temp readings.


I have been getting 32C from my ASUS P5W DH Deluxe BIOS and speed fan reads 51C under full load @ 3GHz yet Core Temp shows 65C/68C which is way to high. I have an $8 cooler (I'll instal a chiller in a few weeks) but I know it isn't hitting 65C as I can touch it. 50C sounds about right, that might even be a little high...
Any advice as I would hate to be burn my E6600 up?

 

[Polish3d]

I too am a little skeptical of coretemp, but partly because I dont like its readings, which for me are about:


36c idle
50-56c dual prime


If it's MaxTcase is about 25c too high, I wonder if its temps are being reported (not measured, reported) accurately as well. Hell, Smartguardian says my chipset temp is 255c, lol


(it's really ~35c)

 

[EXEEMLITE]

I too am wxperiencing high temps and its to the point that I am ready to get a new board. I am runnihg the p5b and it is known to have false temp readings, on top of that I have a ninja plus. The strangest thing is I have put the stock heatsink on for the first tiem and my temps about 9 degrees cooler, but still I am idle at 41c and that's running stock...
THe frustration is to the point that I am thinking about getting the ds3 to see how that works out, just dont want to have to go through the whole "buy a cheap stick of ram so I can boot up, then worry about trying to over clock and changing ram out everytime I have to reset the bios... frustrations are mounting. Any. Please understand that I have set,reset and re-reset the ninja, I just put on the stock about an hour ago, man I need help.

 

[Vertigo0176]

Since the program " Core Temp" was never offically meant to measure temps on the cpu, meaning its something that doesnt come with the MB BIOS, I would trust the BIOS readings cause thats something thats standard on every MB.

 

[EXEEMLITE]

Sorry about the lack focus on the last, post, just frustrated. Let me also add That I have a laser thermometer, I am getting in the area of 40-41 dual prime going on about 10 minutes ,when I point it directly at the base of the stock heatsink. But all of the monitors are The north bridge is definately hotter to the though than the heatsink. Ofcourse I have about three different temp readers and they are all at 62-63, including core,and pc probe. Guys I just sold my opteron 165 rig to set this core duo thing up, but I cant push it because of these temps, what do you guys think?