Need help diagnosing temp readings

[Allistah]

I'm been reading about this a lot and I just can't understand what is going on here. I've read the temperature guide at Tom's Hardware and that makes sense. What doesn't make sense is the readings that I'm getting on my system.

My mobo is a GA-P35-DQ6 with an e6850 3GHz proc - defaults on everything.

tcase is supposed to be the sensor between the two cores. The cores themselves (tjunction) should be higher than tcase.

So here is where I don't understand it. Here are the readings from Speedfan (idle):

Temp1: 45c
Temp2: 32c

Core 0: 24c
Core 1: 25c

So in this case my cores (tjunction) are less than my tcase. So, did I install my heatsink wrong or something to get these wacky numbers? Reading the CPU temp guide, it makes no mention of things being off by 15c. Here is the guide for reference below. If someone could help me out I'd really like to figure out what the heck is going on here.

Tom's Hardware CPU Temp Guide: http://www.tomshardware.com/fo...core-temperature-guide

I'm pretty sure that Temp2 is tcase because if I use TAT to put a workload on the proc, Temp2 and Core 0/1 all go up in temps right away so that tells me those are for the proc. I'm not sure what temp1 is reading.

Another thing I don't understand is the vcore voltages.

Vcore 1: 0.99v
Vcore 2: 1.87v

I just don't get it. The system is working great and I can game on it and all that just fine. It ran Ortho for 6 hours without a problem as well but I'd really like to understand what is going on here. When I put a load on both cores, the Vcore1 goes up to 1.2v. Vcore2 says at 1.87v. I'm guessing that the 1.87v is an incorrect reading and really isn't reading anything.

Again, any help here would be apprecaited. I really want to understand what is going on in my system.

Thanks,

-Allistah

 

[BonzaiDuck]

You'll get a lot of varied perspectives on this.

First of all, if you're running TAT, you must also have an Intel chipset. I've got the nVidia 680i, and I can't run TAT.

What I've discovered is this. Many of the stress-testing or monitoring programs are not giving accurate readings on these newer processors. I've relied on SpeedFan for years, but it doesn't "make nice" with my 680i system.

Before you go into a panic about your readings, you should try running CoreTemp instead of SpeedFan. (Supposedly. . . . ) Core Temp gives accurate readings of the TJunction core values. Also, Everest Ultimate Edition gives readings similar to Core Temp, with the caveat that the program has a high overhead for monitoring just about everything else (including voltages, fan-speeds -- you name it). So with EUE, the core 0 temperature seems out-of-whack with the core 0 reading on Core Temp.

The THG temperature guide (unless they've updated it since a week or two ago) -- is "dated" with respect to the C2Q processors, but I see that you have a C2D. In fact, the E6850 is a relatively newer processor than last year's C2D's. Which causes me to wonder some more about your temperature quandary.

But try Core Temp and see what you get.

 

[Allistah]

Thanks for the reply, I appreciate it.

I also have Core Temp 0.95 and it gives me the same (close enough) readings as Speedfan and TAT. They all match up for the core temps. All three programs are boderline between 25c and 27c. Right now Speedfan and CoreTemp 0.95 are reading the exact same of 25c and TAT is reading 27c. I just don't get the reading for tcase I guess.

 

[bryanW1995]

tjunction is misreported as 85c instead of 100c currently. I don't know if a fix is in the offing or if we're just supposed to know about it. Add 15c to your temps in tat/speedfan/coretemp/etc and they'll be correct. you can set coretemp to report delta to tjunction remaining but it's a pain in the a$$ to read it so I just leave it at the default setting and remember to add 15c.

 

[Allistah]

So right now, this is what CoreTemp shows:

(Idle sitting here as I type this post)
Ambient room temp: 24c
Tjunction: 85c
Core 0: 21c
Core 1: 21c

In SpeedFan my Tcase temp is 30c. (I'm assuming this is correct and doesn't need the +15c added to it?)

So, if I "correct" those, it really is this:

Tjunction: 100c (+15c added)
Core 0: 36c (+15c added)
Core 1: 36c (+15c added)
Tcase: 30c

Those readings look right to me. The cores are warmer than tcase which is what the CPU temp guide says it should be.

Now if I look at "Show Delta to Tjunction temp" option in CoreTemp 0.95, this is what it reads:

Core 0: 63c to Tjunction remaining
Core 1: 63c to Tjunction remaining
I did not add or subtract any numbers from that so I guess those are accurate.

Everything was at idle.

So does everything I typed up there look accurate now that I've shown the before and after numbers? They make more sense to me but I could be completely wrong.

I'll put the system on a load and take another set of numbers to see what I come up with. I'll post those when I'm done.

-Allistah

 

[Allistah]

By using TAT to give it a full thermal load, here are the readings now (which are corrected):

(e6850 3GHz G0 Proc and a GA-P35-DQ6 motherboard)

Tcase: 64c
Core 0: 75c
Core 1: 74c

Core 0: 25c to Tjunction remaining
Core 1: 26c to Tjunction remaining