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On TCase Temp,VCore and -12V (E6600 All Stock and Untouched)

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June 10, 2007 11:15:34 PM

Hello :) 

Well, though Im still trying to figure out all the technical mumble jumbo in the awesome Core 2 Duo Temp Guide... I have some questions...

Some info:
TAT shows, 43 and 40 respectively right now for the cores.
SpeedFan shows 40 and 36 respectively in Core 0/1 (If I understood the guide these are the Core temps as reported by TAT for instance)
(And once Temp 1 goes to 50 a flame icon appears).
CoreTemp reports 41C and 37C respectively.

1. Where can I find TJunction? I almost had a hearth attack when the guide said 75 was hot (or something) and CoreTemp 0.94 shows 85C 8O
But then I was relieved when I saw 9.x always shows up either 85C or 100C (constant values). I hope that's correct.
But then... the guide says TJunction are the "core temps" as reported by TAT and SpeedFan (Core0/1), so what gives? If SpeedFan shows Core temps, but TJunction is constant, then what is the TJunction reported by SpeedFan? :?

2. With SpeedFan, Vcore1 = 1.26V, VCore2 = 1.86V
Isnt VCore 2 too high? I read VCore MAX according intel should be 1.3 or something like that?

3. With SpeedFan, -12V shows up 16.97V (+12V 0.0).
Isnt this too high?
I think for instance values should be in the +0.5/-0.5V range (for instance +3.3V should be 3.0 or 3.6? -and its 3.28V FYI, +5V is 4.84V/5.16V, -5V is 6.41V)
I have a 8800GTS 320 BTW.

Thanks for your help, Im kinda worried right now :( :( :( 

-EDIT: Here is a picture so you have a better explanation:

June 12, 2007 10:44:34 AM

I am also learning about temps and relationship to voltage, etc. I am not 100% sure this is correct but thought I would try to help.

The core 0 and core 1 temps are the Tjunction temperatures referred to in the guide. The Tcase temperature is reported by one of the other temps in Speedfan. Based on the picture, it looks like your temp 2. The temp 1 value looks like your GPU. Don't worry about the flame indicator, this is just a default set in Speedfan. You can change the value at which this appears if you want.

The idle temperatures are similar to my e6600 system at stock with EIST enabled. I run around 28 to 30C on Tcase and 33/34 on Tjunction. Noticed on CPU-Z that your multiplier is 6x which is consistent with EIST enabled (lowers your multiplier and voltage - and therefore temps - when your system is idle).

The voltages reported in Speedfan (as well as the fan rpm) look suspicious. This could be a set-up issue in Speedfan. Again, I am new to all this and still learning. Check out the other forums related to power supplies, there are some very good guides and posts.

Hope this helps.
June 13, 2007 12:17:18 AM

Quote:
The core 0 and core 1 temps are the Tjunction temperatures referred to in the guide. The Tcase temperature is reported by one of the other temps in Speedfan. Based on the picture, it looks like your temp 2. The temp 1 value looks like your GPU. Don't worry about the flame indicator, this is just a default set in Speedfan. You can change the value at which this appears if you want.

Oh yes, I think you're right. I ran a game in windowed mode, and checking speedfan 24/7, temp 1 would raise up to 47 or 48 on kinda "heavy" load, while the other just raised to 35C. So im guessing you're correct about TCase/GPU.

Quote:
The idle temperatures are similar to my e6600 system at stock with EIST enabled. I run around 28 to 30C on Tcase and 33/34 on Tjunction.

Here is a problem. Comes out I never enabled EIST or the other setting (C1E or something). So Im guessing Im fine in that aspect then? (since i was basically running at "full speed" and getting those temps).

Quote:
Noticed on CPU-Z that your multiplier is 6x which is consistent with EIST enabled (lowers your multiplier and voltage - and therefore temps - when your system is idle).

I think it was something playing funny in the Mobo. Now that I configured it right (all setting manually in BIOS), the multiplier is 9x and 266 FSB, also my RAM now shows up correctly, even the timings.

Quote:
The voltages reported in Speedfan (as well as the fan rpm) look suspicious. This could be a set-up issue in Speedfan. Again, I am new to all this and still learning. Check out the other forums related to power supplies, there are some very good guides and posts.

Yes indeed... and this is why im kind of worried :( 

Could you share your voltage stats, and maybe your temps during full load? (And also maybe what is your videocard :p )

Thanks a lot for your time, I appreciate it :) :) :) 
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June 13, 2007 11:16:07 AM

I'm traveling this week so I will have to get back to you later this week on the exact voltages. From memory, at full load (TAT 100% on both cores) Vcore is around 1.312, at idle around 1.32 (EIST disabled).

My system configuration is as follows;
MSI P6N Platinum, E6600, Zalman 9500 cpu heatsink/fan, Mushkin 800MHz 2x1GB, MSI 8600GTS graphics card, Zalman 600W p/s.
June 14, 2007 12:35:41 AM

Ok Cooperstown39, thanks for your help. Ill be waiting if you have the time to post them then.
June 14, 2007 1:40:41 PM

Here are my temps and voltages (I am slightly overclocked at 2.8GHz with a 9x multiplier, FSB 311);

Speedfan @ idle
Tcase = 30C
Core 0 = 32
Core 1 = 33C
VCC3V = 3.36
Vcore = 1.34
VRAM = 1.92
VChipset = 1.05
+5V = 5.00
+12V = 12.32
VCC1.5V = 0.91
VSB3V = 3.34
Vbat = 3.09

TAT @idle
Core 0 = 34
Core 1 = 34


Speedfan @100% load (using TAT)
Tcase = 48C
Core 0 = 57C
Core 1 = 57C
VCC3V = 3.34
Vcore = 1.30
VRAM = 1.87
VChipset = 1.02
+5V = 5.00
+12V = 12.32
VCC1.5V = 0.91
VSB3V = 3.34
Vbat = 3.09

TAT @ 100% load
Core 0 = 59
Core 1 = 58

I read in one of the posts that Speedfan is more accurate than CPU-Z in reporting voltages but just in case, here are the CPU-Z data as well.

@idle, Vcore = 1.336
@ 100% load = 1.304

Also, another post suggested that the temp 1 value in Speedfan was the Northbirdge temp (not the GPU as I had originally thought).

hope this helps :?:
June 15, 2007 2:45:27 AM

Thanks a lot for your help Cooperstown39 :) 

I think SpeedFan just reports my voltages in a wrong way (+12V is always 0).
Oddly enough your temps in full load are similar to mine, but yeah, you're running 400 Mhz faster.

Your temps are a great reference, Ill see if I can improve the cooling in my case and get somewhere close to you when idle specially.

Thanks again :) 
June 18, 2007 1:22:11 AM

are you guys using the stock cooler. I am and i get 30C temps with core temp. It seems low to me but maybe not.
June 18, 2007 2:28:37 AM

No, using a Zalman 9500 heatsink/fan. I am slightly overclocked to 2.8GHz with a 9x multiplier (no voltage increases) and getting low 30's on core temps at idle. Low 30's without an overclock with a stock fan seems reasonable. You may also want to check your Vcore and multiplier (CPU-Z is a good check). If you have EIST enabled in your bios (or speedstep in some bios's), it will automatically reduce your multiplier to 6x (with an E6600) and lower the Vcore when the system is idle. This would also account for lower core temps.
!