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help us narrow down temp problems on s754 cpu's


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Bios version: 8/27/2004 version 6

 

Please see attached PNG file for the info.

 

The Zalman heatsink is not hot at all. In fact, it can be best described as nearly cool. The same can be said when the base is touched.

 

Unfortunately at this time I don't have access to any temp probes.

 

I hope this info was useful nonetheless.

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Okay, deleted my last post:

 

Lanparty NF3 UT 250Gb

Newcastle 3200+ (200FSB)

Venus 12 on full blast

BIOS: 10/15 Fourth Beta

 

Heatsink is not even warm at all, computer's been on for only about 5 minutes, however 40C is wayyy too hot.

 

No temp probes :(

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1. screenshot of your cpu-z

2. screenshot of your smartguardian or bios screen

 

attached

bios says same 55

 

3. touch the base of your heatsink if its reading very warm (50°C or higher). Tell us if its cool, warm, hot etc.

 

not that hot for sure

 

4. Finally, tell us what bios you have.

 

8/27/2004

 

 

 

 

 

so, what's ir all mean?

 

it boots at 55, but with the slk948U and duct work, and 75 cfm fans on the heatsink and for rear exhaust...it just AIN'T that hot....

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I have attached screenshots.

The cpu HSF was cool to the touch, maby slightly above ambient.

the chipset heat sink (original mobo) was warm to the touch.

I am using the original 8/27/04 BIOS

No temp probe/

 

 

I have been reading a lot about how the temperatures in BIOS and smartguard (or other S/W) vary considerably and can not be trusted other then for general area. So I decided to do a little experiment. I have no temperature probe so I can not determine the accuracy of the measurements, but I can compare BIOS to Smartguard

 

First here is my method should anyone wish to try it

 

1) Boot PC, leaving it idle and let it come to a steady state (say 20 min)

2) Choose to restart (not shutdown) and go directly to BIOS set up

and PC health ( record temps and time as quickly as possible).

3) Stay in PC health wait 5 min.

4) Record temps and time.

5) Exit BIOS and allow system to boot

6) As quickly as possible record temp and time in smartguard.

7) Wait 5 min. record temp and time in smartguard.

8) Repeat steps 2-7 until satisfied that you see a pattern in your

measurements.

 

My results after 4 iterations:

 

CPU

BIOS immediate restart measurements: 50-51

BIOS after 5 min.: 55

Smartguard immediate measurement : 49

Smartguard after 5 min.: 46-47

 

System1/PWMIC

BIOS immediate restart measurements: 32-33

BIOS after 5 min.: 36-37

Smartguard immediate measurement : 36-37

Smartguard after 5 min.: 32-33

 

System2/System

BIOS immediate restart measurements: 33-34

BIOS after 5 min.: 33

Smartguard immediate measurement : 33-34

Smartguard after 5 min.: 34

 

My interpretation (theory):

 

Theory 1

 

BIOS and smartguard are measuring the same value when the temp is the same.

 

Why do I think this?

The system2/system temperature was constant throughtout my testing and did not differ between BIOS and smartguard.

 

One could rebut that the cpu and PWMIC were not constant. I feel they were not constant because of a different reason. Which leads me to my next theory.

 

Theory 2

 

The PC health menu for the BIOS I am using is utilizing the CPU and PWMIC more then windows xp services and smartguard are using.

 

Note that I have disable many xp services that are normally started with a default xp install.

 

My reasoning for this is that for the CPU the BIOS temps increase about 4 degrees before stabilizing and the smartguard temps decrease about 3 degrees. PWMIC shows a similar pattern, BIOS increases 4 degrees, smartguard decrease 4 degrees.

 

While we have been noticing that our temps seem different between original BIOS and smart guard I think that most of the difference is actually that the chips temp are different when the measurements are taken. Since I don't have an outside temp probe I cannot proove or disproove my suppositions.

 

I haven't flashed Oskar's BIOS that has a BIOS temp fix in it yet. I will try and test when I get the chance. I wonder what the nature of the fix was? Maybe reduce the utilization of the cpu and pwmic by the BIOS???

 

Anyone know where the System2/System temp measurement is taken from?

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3. cool to touch

 

4. 9/14 official BIOS

 

 

Fresh install of XP. Running at stock speeds. Retail box 3200 with stock HSF, used arctic silver instead of supplied whatever it is :)

 

 

Edit: ambient temp is 22.4C

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Guest eva2000

2x AMD64 3400+ Newcastles both over report temps at idle and load in bios and windows.

 

ADA3400AEP4AX

CBASC 0414XPMW

9545832D40288

 

ADA3400AEP4AX

CBASC 0414UPMW

9546032D40271

 

10x 250HTT = 2500mhz at 1.55v

With Win2k SP4 latest updates

 

Water cooled as per sig link using MCW6002/MCP650 pump with Bravo heatercore with 2x 120x38mm Delta 190cfm 36W fans @ 145cfm each.

 

room temp 26-30C

 

Idle

cpuz_idle.jpg

 

Load

 

stresscpu_1.jpg

 

prime95_1.jpg

 

heatsink is cool to touch normally around 28-30C but i have zalman fan bracket with 2x 120x38mm sunon 108cfm fans over entire motherboard, waterblock, mosfets and chipset heatsink

 

used bioses

 

27/8

14/9 official

14/9 4v

05/10 4v

 

all the same over reporting

 

now changed to AMD64 3700+ 1MB clawhammer and idle temps are CPU = 30 and load = 39C @ 2556mhz at 1.5v with 05/10/04 4v bios

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1:- 10 x 250 1:1 4x HTT DTR Clawhammer @ 1.5v / 110% 1.69v reported in CPU-Z

2:- 41c max operating temp after a couple of hours Gaming. 25c ambient temp. 27c Idle temp :confused:

3:- CPU cooler is cool to touch

4:- JSJ914

 

I'd have given screenies but have lost my ftp password :nod:

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Hi

 

CPU heatsink is cool to touch but PWM IC has been measured by a Digital probe and is reading right.

 

I never measured the CPU with a probe as I am not concerned by that. I am concerned that the PWM IC hits 54 Celcius under load.

 

I'm using Oskar's 10/5 BIOS.

 

 

SmartGuardian

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