Quik speedfan and temp question......or two.....err four.

[Dunkel]

New build
GA-P35-DS3L
E2160
EVGA 8800GT
etc.

I ran Prime95, pre-calibration, to determine which temp is Tcase.

Temp1: 40C
Temp2: 45C
Core0: 44C
Core1: 43C

1. If Tjunction is always higher then Tcase then, according to my numbers, Tcase is = Temp1?
2. Where is the temp two reading coming from?
3. Is my ambient temp from the GPU the temp of the air inside the case?
4. I had a Temp3 reading of -2C, is it ok to delete that Temp3 from speed fan?

Yes I read the Temp guide and I'm just trying to work through Section 8 notes. BTW that's a great guide, even if your a noob like me you can put some effort into it and learn a lot.

 

[Silverion77]

ugh, this isn't a place to post every question you have.

1) If those are idle temps....what the hell is your ambient
2) Comp says in the guide that Tcase will be the one that increases in relation to the cores
3) GPU temps are not ambient
4) Temp 3 is nothing

 

[Dunkel]

1. Those are 100% load temps while running Prime95.

3. SpeedFan is giving me a temp labeled GPUambient Temp. SpeedFan does not give me an ambient only temp.

The temp guide says to post guide questions here, so I did.

Thanks

 

[Silverion77]

I hope that is at stock because thats pretty low if overclocked

Don't use speedfan to monitor ambient...measure it yourself like the guide says thats why your calibrating, to make ambient right

 

[Dunkel]

Ok. I haven't gotten that far yet. I'm just trying to figure out what Tj is and what Tcase is.

Idle

Temp1: 35C
Temp2: 25C
Core0: 20C
Core1: 20C
GPUambient: 38C
GPUCore: 52C

Load (not OC'd) Prime95 Blend test. Small FFTs

Temp1: 37C
Temp2: 42C
Core0: 40C
Core1: 40C
GPUambient: 38C
GPUCore: 52C

 

[Silverion77]

Nothing there is right...

Cores are cooler than Tcase = impossible
both are lower than suspected ambient = impossible

First get a real ambient reading then try again

 

[Dunkel]

Ok. I just thought I would move through the guide according to section#. I am only trying to confirm which temp is Tcase before I move to Section9: Calibration.

1. So now, if I'm only looking for a Temp with a similar Idle to Load Delta, Tcase = Temp2. Right?

 

[CompuTronix]

Correct.

 

[Dunkel]

Thank you Sir and thanks for the guide.

 

[CompuTronix]

You're very welcome.

 

[Dunkel]

In my case, is Temp1 one a north or south bridge temp? It never seems to change much.

Or will that be my ambient temp after calibration?

 

[Dunkel]

I can't figure out how to set my CPU fan to 100%.

 

[Silverion77]

No, It will not be ambient....DO NOT USE SPEEDFANS AMBIENT. Measure it yourself!!!

Temp 1 for the DS3L does not record anything. At least from what I've seen with my overclocks. The NB Temp would go up during overclocking but it didnt.

PC Health at the bottom says auto fan control and disable it

 

[Dunkel]

@Silverion77, thanks.

I finally made it though Section9: Calibration Part 2: Tcase Offset Correction.

I didn't expect speedfan to be off so much.

Current Idle temps while browsing.

Temp1: 36
Tcase: 24
TjCore1:34
TjCore0:34

I measured ambient temp with the side off and all fans at 100%, with a fish tank thermometer. @ 72F or ~22C

Tcase temp. (originally Temp2 in Speedfan) = Ambient Temp + 1C = 23C

Speedfan was not reading Tcase temp @ 24C, I had to offset speedfans number by adding 2 in the advanced settings.

Tjunction Temps = Tcase Temp + 10C = 34C

Speedfan was not reading Tjunction temps @ 34C, I had to offset speefans numbers by adding 17 to both cores in the advanced settings.

Let me know if anybody sees a problem with these numbers.

 

[CompuTronix]

Dunkel, in reviewing your posts, you have not mentioned whether your E2160 is L2 or M0 Stepping.

 

[Dunkel]

CPU-Z has me at M0 Stepping

As far as I can tell, I made it through the Temp guide and SpeedFan is correctly calibrated.

 

[Dunkel]

errr...maybe not.

I will probably recalibrate from the beginning.

The first time I ran Crystal CPUID I selected the wrong core in Section 9:, Part 3: (A). I ended up with 44 as my two characters for Section 9:, Part 3: (D). M0 Stepping 100C - 68 (from the 44) = Tjunction 32C. This ultimately gave me a 17C offset for the Cores (Tjunction) in SpeedFan.

I then went back into Crystal CPUID today (a few days later, and a newer version), I changed the selected core because now I know that SpeedFans Core0 (my hottest core) is = Core 1/2 in Crystal CPUID. Back to Part 3: (D) and this time I got 3C as my characters which converted to 60. 100-60= Tjunction 40C. At this point I would need to go back into SpeedFan and change the Core offset to 25C.

But I'm going to start at the begging because under Section 9:, Part 4: Note: "CPU's with Steppings which are Tjunction Max 100C typically require +15C Core Offsets."

I have not started the Temp guide over yet but I did go back into CrystalCPUID to recheck my characters and this time I got 3D which converted to 61. I entered 0x19c in the MSR Number field over and over again, some times I would get 3C and sometimes I get 3D.

So that's where I'm at.

Why did I do all that when I could just take the Core temps from the CoreTemp program and use those to calibrate SpeedFan?

 

[CompuTronix]

Because Core Temp can also be incorrect, and because Core Temp can not be configured with Offset corrections.

 

[Dunkel]

Have you ever heard of the Core offsets for speedfan being +25C? That seems a little extreme to me considering the usually 15 statement.

I'm not going to recalibrate until I buy some better fans and a better way to measure ambient. Do you guys use digital thermometers or something?

Thanks a lot.

 

[Silverion77]

What is your ambient and what is your Tjunction (once calibrated)?

sorry just forgot

 

[Dunkel]

ambient was ~22C

Tj was 34C with the side off.

But if you remember, I used the wrong hot core in CrystalCPUID. My Tj offsets are 25C!

 

[Silverion77]

If ambient is 22 and Tj atm is 34 calibrated (stock speeds??) then that is right. If you recall, ambient + 10+-5 = Tj

Under any conditions....before calibration Tj was 9C (impossible without chilled water/phase change) and adding 10 would give 19 (still sub-ambient) so 25 is right in the ball park

 

[Dunkel]

I know I did most of it right. I just need to re-do it based on the CrystalCPUID issue.

1. What do you use to check ambient temp?

 

[CompuTronix]

For accuracy, I use two devices; one analog and one digital, positioned as described in Part 2 (A), "preferably near computer case air intake, clear of warm exhaust".

If you don't have an analog or digital IR thermometer, then use the thermometer on the wall thermostat control. Just remember to take into consideration that computers which are in a different room than a wall thermostat, and are at floor level, may have somewhat cooler intake air than those which are a few feet higher at desk level.

It is not my intention in the Guide to make this Ambient measurement difficult, nor is it necessary for anyone to purchase scientific grade thermal measuring devices; just use whatever means available to read, or simply "guesstimate" room temperature near your computer air intake.

Comp

 

[Dunkel]

My extreme attention to detail will bring me down some day.