Anyone have issues with the DS3 and intel TAT reading high?

[krazynutz]

I've currently got a 6400 on a DS3 @ 3.06 Ghz.

CoreTemp, SpeedFan 4.32, EasyTune, AND my BIOS read identically.

Then there's TAT.

It reads conisistanty 10º higher both idle and at load. People say TAT is more accurate than CoreTemp but I've heard CoreTemp is THE one to believe.

Does anyone else have the 10º difference with TAT on the DS3? I have a P5B deluxe and all monitors read identically including TAT. The DS3 messes with Speedfan's readings of fans and voltages as well.

Anyone?

 

[flabbergasted]

Hi. I have the DS3 running E6300 @ 3.15Ghz. I use TAT, Everest and EasyTune. They all report the same temps. Idle 32c, modest load 37c, heavy load 57 to 60c. I'm also using the stock cooler with a well ventilated case.

 

[PSYCHoHoLiC]

mine reads about 10°c high in tat, as does just about everyone elses, its pretty normal.

 

[krazynutz]

so you have the DS3 then? your temps match my CoreTemp temps but my TAT is actually about 15º higher. Right now I'm idleing at 33/32 in CoreTemp and 50/46 in TAT. that's a HUGE difference! My BIOS reflects the CoreTemp temps. I have the latest BIOS installed - F10. Under TAT's stress test, it gets up to 75º in TAT, 62º in CoreTemp.

 

[Nomans63]

My DS3 Rev 3.3 is running E4300 @ 3.19 GHz with 2GB of Corsair XMS TWIN2X2048-6400C4.

TAT shows temps around 44-46C idle for both cores, while BIOS, Core Temps, Speedfan 4.32, and GigaByte Easy Tune5 show pretty much the same temps around 28-30. I'm not sure whether TAT is showing correct temps while all others are wrong. It can't be.
However, I think TAT could be right because Speedfan , BIOS and Easy Tune5 are showing CPU core temps around 28-30, BUT Speedfan is also showing the motherboard temp as 41C (same as System in EasyTune 5 and BIOS) for my build with case OPENED.

This looks suspicious to me that the CPU temps and motherboard temps somehow get swapped in Speedfan, BIOS, and Easy Tune 5. How can you have the motherboard/System temp higher than the CPU temps in an OPENED case just air-cooled? That's pretty much impossible. This means that my CPU temps are more like 41C and mobo is 30C, NOT the other way around.

 

[krazynutz]

but are you using the latest version of speedfan (4.32)? It measures both core temps - just like CoreTemp. It wouldn't mix up one of the core temps with the mobo temp. Watch the temps as you run Orthos. The core temps will both jump up while your mobo temp barely moves so it can't be reversing them.

Then there's Speedfan's voltages. Do all other DS3 owners have wacky voltage readings? I've figured out that Vcore 2 is the dimm voltage, but my -+12V's are way off as well as fan readouts.

On my Asus p5B deluxe system, all temps monitors agree with each other. It's got an XP-120 on the CPU and idles around 42-ish. My DS3 system with stock HSF idles around 32-ish (CoreTemp/Speedfan) which tells me maybe TAT IS the right one.

But how could the mobo's own BIOS be wrong?

 

[Nomans63]

but are you using the latest version of speedfan (4.32)? It measures both core temps - just like CoreTemp

Yes, KrazyNutz. As I mentioned in my previous post, I'm using the latest version of Speedfan (4.32). However, I didn't say Speedfan also displays the temps of both core, in addition to the CPU temp which is probably the average temp of both cores, at the bottom of the status window on the right side like this:

Motherboard 41C
CPU 28C
WDC_SYS 30C
HD1 32C
HD2 31C
Core 0 28C
Core 1 30C

That's what I posted last time that Speedfan shows my mobo temp higher than the CPU temp is my OPENED case. I'm not sure about what temps other DS3 owners are getting, but in my case, if I swap the temps for mobo and CPU, it would make more sense because it's closer to TAT temps, right?

Then there's Speedfan's voltages. Do all other DS3 owners have wacky voltage readings? I've figured out that Vcore 2 is the dimm voltage, but my -+12V's are way off as well as fan readouts.

You're right. My voltage readouts from Speedfan is really wacky:

VCore1 1.39V
VCore2 2.1V <--- This should be my VDIMM, not VCore2?
+5V 4.76V
+12V 2.37V
-12V -16.97V
-5V -8.58V
+5V 5.30V

BIOS and EasyTune 5 displays the same CPU temp as the average CPU temp from Speedfan. I think that the CPU/mobo combo passes the swapped core temps with the mobo temp to applications (Speedfan, BIOS, and of course EasyTune 5), except TAT is somehow getting the core temps right.
On my other system (eVGA 680i), the core temps from TAT all agree with Core Temps from BIOS and Speedfan (usually TAT core temps is either the same or 1-2C higher than the others but NOT a huge difference like DS3).

 

[Nomans63]

Watch the temps as you run Orthos. The core temps will both jump up while your mobo temp barely moves so it can't be reversing them

You're right again, KrazyNutz. It's a good point. I haven't tried Orthos 'cause it's my new build. I'll try Orthos and let you know the temp results later.

 

[krazynutz]

Nomans, Watch your +12V reading in speedfan. Keep an eye on it. Is it always the same? (2.37V) or does it fluctuate anywhere from 0.7 to up in the 3.0's? Mine fluctuates but every other voltage pretty much stays the same and read just like yours. Check speedfan again and see if the +12v is the same and let me know. Obviously the reading is wrong, but the crazy fluctuations on mine scare me. Thanks.

[edit] I just put the PSU from my DS3 machine into my P5B machine and voltages stay rock solid so I'm not really worried about it as much. Does your +12v fluctuate though? (mouse over it and note the max/min) Thanks

 

[Pax2All]

:? Thats odd. TAT has issues with the E4300 chip because it assigns it a tjunction max of 100c instead of 85c, but I've never heard of it having issues with E6xxx chips. What revision is your cpu?
http://softwarecommunity.intel.com/isn/Community/en-US/forums/thread/30231602.aspx
This complicates things even more.....

 

[Nomans63]

KrazyNutz, here are my results:

1. I have run ORTHOS while watching the temps from Speedfan. You're absolutely right. The only temperature changes are from the CPU core only (That's odd, why on earth is my mobo temp 41C while the CPU core temps are around 30C - ambient temperature is 25C. It makes absolute no sense). Anyhow, we got the issue resolved whether Speedfan displays the wrong temps or not. ORTHOS pushes the CPU temps from 30C to 50C in no time and moves up and down a bit around 55C, while the moboo temp remains unchanged at 41C in Speedfan.

2. The only values fluctuate A LOT in Speedfan are from +12V. I've watched the voltages for about 15-20 minutes. The +12V jumped from 0.96V to 2.30V, then 1.02V, and then back to 0.96V, then 1.02V, 2.30V, etc.. some times it also jumped to some other values like 2.24V. There are no patterns for the jumps. The +5V does fluctuate a little, but not that much as +12V. Basically, the +5V changes from 5.30V to 5.27V, then back to 5.30V.

BTW, my PSU is an Antec 500. I know it's not the best PSU, but it's not a bad one either. So far it has worked fine for me and I'm quite satisfied with it. May be Speedfan has some issues with my Antec 500 TruePower?

 

[krazynutz]

Well, I still can't find a solid answer on the TAT vs Speedfan/CoreTemp issue. TAT is continually 10-14º higher both idle and load.

My case has two 80's in front, a 92 in the back, two fans in the PSU, and a 120 on my massive SI-128. I like the SI-128 because it cools the NB as well. I still hit 69-ish at times in TAT but never go over 54 in the other two.

Does TAT have issues with the DS3? I just can't imagine the BIOS, CoreTemp, and Speedfan all being wrong - especially the BIOS!

BTW - I HAVE to have a well-enough ventillated case because my temps only drop about 1 to 2º MAX when I take the side off.

 

[Nomans63]

KrazyNuts, what do you think about Pax2All's post?

Thats odd. TAT has issues with the E4300 chip because it assigns it a tjunction max of 100c instead of 85c, but I've never heard of it having issues with E6xxx chips.

Think about it for one sec. That could be it. If for some reasons TAT assigns the wrong TJunctionMax to the E4300, the calculated core temps results are then offset by around 15C, which I think may be true as the core temps TAT displays are always 15C higher than from other tools, right? If this is the case, then all we have to do is reduce TAT temps by 15C and everything is then OK.

What revision is your cpu?

Pax2All, the revision of my E4300 is L2 (reading from CPU-Z v1.39, CPU-Z verified ID 180508) in case this could be of any help.

 

[Pax2All]

http://forumz.tomshardware.com/hardware/ftopic-229550-25.html

read my updated posts and tell me what you think

 

[krazynutz]

DUDES! I just downloaded CoreTemp .95 and now IT agrees with TAT!

Check this out though: I have an e6400 and CoreTemp .95 says I have a Tjunction of 100! Not 85 like .94!

Could this be causing the probem? The DS3 doesn't give accurate readings for the Tjunction?


CoreTemp .95 (reads Tj=100) agrees with TAT
CoreTemp .94 (reads Tj=85) agrees with BIOS & SpeedFan

I couldn't read that other thread (at work) but lemme know if this info helps or if I'm just reiterating what's already known.

 

[Pax2All]

Look at your reported load temps and I think you'll find they are proportional to the Tjunction used by the program. This means in their own way all three are right. I dont know why they use the different Tjunction figures, but the temps are proportional.
If I run TAT at 100% load on my machine:
CT 0.94 reports a load temp of 65c (76.4% of the Tjunction 85c)
CT 0.95 and TAT report a load temp of 78c (78% of the Tjunction 100c)
Only a 1.4% difference

 

[krazynutz]

I think I found something in the Core Temp forum.

If you look in CPUZ, There's a "Stepping" box with a 2 in it.

Then there's the box below it.

Revision B2 = universal temps between programs
Revision L2 = wacky temps between programs

Is your CPU an L2 or a B2?

 

[Pax2All]

Yep I'm L2 but I believe all E4300s are L2 stepping. Whats interesting though will be the newer E6xxx CPUs.

 

[krazynutz]

I have a newer 6xxx series and IT'S an L2. Probably why I'm having the temp issues I am.

So with an L2 chip, is speedfan and CT .94 (Tj85) the correct temps then?

 

[Pax2All]

Run CT 0.94 and CT 0.95 while youve got TAT at 100%. Take the load temp of each program and divide it by the assigned Tjuction for that program. The percentages should fairly well match (see message 16 in this thread). If they do, you should be fine using Core Temp 0.94.

 

[Pax2All]

LOL read that thread I posted. mrknowitall put things in a lot better context and form than I have. The good news is that Core Temp 0.94 is not broken. Use it to your hearts desire

 

[krazynutz]

so CT .94, speedfan, and my BIOS are correct and TAT is reading too high because of the 100Tj?