Core Temps for E6600 on SS

[billdavis]

i got a mobo that can report sub temps with core temp and it is saying both cores on my 6600 are reaching +15c on load 1.6 vcore i have a jinu117 ss unit

this is too hot right?

the gfroster reads -40c

[SexyMF]

Well TAT says -2C for both cores for my E6600 @ 3.6GHz 1.5V
The -40C is only showing the evaporator temperature and apprently the core temps are actually deeper inside the CPU.

Install Speedfan (www.almico.com) and see what that tells you.

It may be a little hot but 1.6V is getting on the higher side.

[TopherTony]

Yeah post some screen shots, then we'll be able to tell you what is going on with your system

[billdavis]

http://i107.photobucket.com/albums/m316/wcd26/unloaded-1.jpg

http://i107.photobucket.com/albums/m316/wcd26/loaded-1.jpg

[Blaster]

looks like bad mount

[billdavis]

ive mounted it 3 times any tips??

[SexyMF]

The mount is fine. Nothing wrong with those temperatures.

You have -42 on idle. That is good.

[billdavis]

The mount is fine. Nothing wrong with those temperatures.

You have -42 on idle. That is good.

right but @ load should i see 15c

[TopherTony]

no.....something may be wrong with your SS if you are getting to +15C on load

do you notice the sound pitch changing when it heats up?

[SexyMF]

You are looking at the numbers in the wrong way. The temps shown in TAT are deep inside the core and will read much higher than the normal case temperatures as shown by most other programs.

Have a look here:
http://forumz.tomshardware.com/hardware/Core-Duo-Temperature-Guide-ftopict221745.html

[billdavis]

the temps read from the froster stay @ ~ -47
but the proc drops really fast

core temp shows up to +15c on load

it just seem like it should stay frozen if the condensor stays around -47

[SexyMF]

Just because the gas is boiling at -47 it says nothing about the amount of heat it can shift. And is far from the entire story.

In any device there are several thermal coefficients which relate to the devices ability to transfer heat between the different boundaries. That is, the silicon to case -> case to heat spreader -> heat spreader to thermal paste -> paste to evaporator -> copper to refrigerant. etc

Every stage incurs loses. Temperatures within the silicon are enormous. You could have easily knocked 70C off such a temperature even when you are overclocked 78% and pumping in at least 18% overvoltage.
Be realistic in what you expect. Your system is running excellent. Would it make a difference if you have 4.275Ghz @ -200C. If it is stable then excellent, you win.


Copper blocks as load testers do test the system for heat capacity but are unrealistic in terms of expecting such performance to match the CPU setup. Extracting the heat from the CPU is always going to more difficult.

[TopherTony]

could always remove the IHS! ;)

[Ssilencer]

How much is showing speedfan? +22 or -22?
Stick to the speedfan readings and forget about coretemps.

If it is -22c at load, it is an excellent temp, if it is +22 something is wrong, mounting almost sure.
You cannot get -47c on evap and +22 on the proc, unless you use a brick instead of an evap, no matter what other people said :rolleyes:

[billdavis]

thanks for all the help guys

[Ssilencer]

thanks for all the help guys

So???
It was +22 or -22????

[Viss]

TAT and coretemp dont work ok below zero. Your temps are fine, stick with speedfan/mbm.

[SexyMF]

TAT and coretemp dont work ok below zero. Your temps are fine, stick with speedfan/mbm.

Yeah, mine doesn't move off -2C

[billdavis]

So???
It was +22 or -22????



look at the screenies

[Messiah Khan]

Yeah, mine doesn't move off -2C

I get;
-45 Evap
-42 Speedfan
4 Core temp (This number doesn't change)
15 TAT (This number doesn't change)

When under load, the evap temp doesn't change much(Maybe up to -37ish) But the Speedfan CPU tmep goes up to -15ish. Personally I believe the speedfan idle temp is quite accurate, but the load them is way off. Its certainly not the mount, as the CPU is lapped and the evap leaves a perfect impression in the Artic ceramique. I think im just going to have to live with dodgy mobo sensors tbh.

[Ssilencer]

look at the screenies

If I'm asking is because I can't see it in your second screen.

[Ssilencer]

I get;
-45 Evap
-42 Speedfan
4 Core temp (This number doesn't change)
15 TAT (This number doesn't change)

When under load, the evap temp doesn't change much(Maybe up to -37ish) But the Speedfan CPU tmep goes up to -15ish. Personally I believe the speedfan idle temp is quite accurate, but the load them is way off. Its certainly not the mount, as the CPU is lapped and the evap leaves a perfect impression in the Artic ceramique. I think im just going to have to live with dodgy mobo sensors tbh.

The loaded evap temp is good, think that you are getting less than 25c delta at load. Not bad at all.

[SexyMF]

My temps are similar. Evap at -34 and loaded temps of -15 in speedfan. My ambient in the case heats up to much. It is reaching 40C inside the phase-change rig case.

Like I said earlier - copper block load testers don't say much for CPU performance, given the CPU is no where near as good at giving up it's heat.

[Yoxxy]

I get -55 evap temperature and -32->-35 loaded with WCG.
-24->-26 with orthos.

X6800, 4300 mhz @ 1.60vcore.

Both Core Temp and TAT say 5 degrees regardless of what is reported by Speedfan for CPU Temperature.

[n00b 0f l337]

Like I said earlier - copper block load testers don't say much for CPU performance, given the CPU is no where near as good at giving up it's heat.
Load testers arent supposed to give people a number to look for on there cpu tests, there to tune the units to be able to take that heat load.

[Viss]

I get;
-45 Evap
-42 Speedfan
4 Core temp (This number doesn't change)
15 TAT (This number doesn't change)

When under load, the evap temp doesn't change much(Maybe up to -37ish) But the Speedfan CPU tmep goes up to -15ish. Personally I believe the speedfan idle temp is quite accurate, but the load them is way off. Its certainly not the mount, as the CPU is lapped and the evap leaves a perfect impression in the Artic ceramique. I think im just going to have to live with dodgy mobo sensors tbh.

Depends on unit and vcore you are using. C2D idles rather cold, even with me stock mach II i get about -30 in speedfan up to 1.50v real. Me mach cannot hold the load though (orthos with 1.43v real is about 0 deg in speedfan). Idle -42 and full load -15 in speedfan isnt that big of a delta i guess.

[n00b 0f l337]

Well what is your evaporator temperature. Your Mach maybe holding just fine. The delta just sucks and its hard to compare results of temperatures.

[Viss]

If anything is way off its the mach sensor and i dont have anything else to measure evap temp with. Idle about -50 and loaded ~-40 on display.

[billdavis]

yeah so would a 100% TAT load that takes the core @4.3 1.63 v-core to about +15c be bad

it only takes the froster temp down from -50c to -40c and smokes the core to +15c
it just dosent seem right to me but im still new to this game

[Ssilencer]

Thank you billdavis to clarify me the speedfan loaded temp :rolleyes:

[billdavis]

Thank you billdavis to clarify me the speedfan loaded temp :rolleyes:


ahh temp on SF is about 5c higher than coretemp so that would be about +20c load temps


I've mounted it 3 times with the same results and the contact looks even so im not sure what I'm doing wrong

[SexyMF]

yeah so would a 100% TAT load that takes the core @4.3 1.63 v-core to about +15c be bad

You didn't read the article did you. 100% is more than 100% orthos. It is brutal and way more than real-world ever stresses you system.

At this point I'm just going to say:
Stop whinging about about the hottest part of your rig when running at 179% being 15C.

[SoF]

I think this is quite possible as I had this with my X2 as well.
-33°C idle with no problem but 10°C load.

The heat transport under heavy dual load with high volts is very hard for a single stage even when the evap is -40 to -50°C.

There are several tiny things that can make a difference of 10 - 15 degress:

1. thermal grease - I mostly use cheap oem paste, very close together on idle, some are bad under load

2. one turn with my winged screws can make 5-7 degree difference. a stock mach I or II kit has a big disadvantage here imo

3. heatspreader is another point, it was a lot easier to keep my X2 without HS cool as to keep my current one with hs below zero

4. depending on the board and type of sensor it might give a really really huge difference in shown temps. compare your boards and bios when comparing temps or you will come to wrong conclusions here, I fear.

[Messiah Khan]

Depends on unit and vcore you are using. C2D idles rather cold, even with me stock mach II i get about -30 in speedfan up to 1.50v real. Me mach cannot hold the load though (orthos with 1.43v real is about 0 deg in speedfan). Idle -42 and full load -15 in speedfan isnt that big of a delta i guess.


Gray Mole v2000 build. C2D 6400@3.8Ghz with 1.5v

[Blaster]

The heat transport under heavy dual load with high volts is very hard for a single stage even when the evap is -40 to -50°C.


Ok, just a small explanation

one thing is the unit being able to hold a determined load another thing is the temperature reading on the sensor embedded on the die

To check if the unit cant hold load or not, you just need to watch evap temp. When load is applied you watch the evap temp, it will climb up, it will eventually stabilize. If your happy with the temp at which it stabilized than the unit can hold the load, if your not (eg. +15ºC lol) then you need consider recalibrating. The temp evap should be measured with thermocouple thermometer, as this will be easier to put the probe as near as posible to the base of the evap / cpu / heat source. Temp reading through any controllers is not very good as most controller sensors are located on top of the evaps (furthest away from the heat source) or, even worse some unit have temp probes on the succion line (eg. mach2 units), and most of this probes are not very accurate.

Temperature reading on the enbedded sensor, through speedfan / mbm5 / TAT / etc, 1st they are not very accurate, they change from cpu / mboard to cpu / mboard. 2nd as they are located on the die, inside the heat source they will undoubtly have much higher temps than the evap temp. Remember that there is a heatspeader between the cpu and the evap, it will act as insulator up to a point. Evap archicture has an effect over this die temp, if you have a very thick base of evap, you will more easily have bad die temp.

Final note, the mount is very important.
If you have a bad mount (eg. bad contact, not enough pressure, too much thermal paste, distorted evap / cpu, etc ) it may seem that everything is good as idle temp can be normal but under load the contact surface area is not enough to transmit the heat to evap so the die temp (speedfan, mbm5, etc) will be high but the evap temp will be lower (will look better lol) as it doesnt have to put up will all the load.