Is HWMonitor or Bios temperature readings more accurate?

In my bios it says my cpu temp is at 43 C and HWmonitor says its at 30 C Core#0 and 33 C Core#1.. so which one is more accurate? My cpu is a e7500 if that matters

kentashin ,

Welcome aboard! Please use SEARCH ... you can't miss it ... top dead center on any page. Also, please read the Stickies ... such as ...

Core i7 and Core 2 Temperature Guide - http://www.tomshardware.com/forum/ [...] ture-guide

Comp

SpidersWeb,

Have you read the Guide?

Thanks, Chief. I'm sure you know where this is going.

SpidersWeb,

I could've answered the OP's question directly, however, he would've learned nothing. I can spoon-feed information and explanations, but that would defeat the purpose of the Guide. The idea is to read the Stickies. Newcomers just might learn something. Every question posted asks that we volunteer our precious time to write answers that have already been written in Stickies, because Forum Members are either unaware of where to find the information, or are simply too lazy to read.

Not quite, nor does the choice of monitoring utility have anything to do with it, although Hardware Monitor typically shows CPU temperature as "CPUTIN". You might want to give the Guide another read, as it appears that you have a few misconceptions, which are best not passed on to our readers.

From the Guide:

Section 5: Findings

(A) Tcase is acquired on the CPU substrate from the CPU case Thermal Diode as an analog level, which is converted to a digital value by the super I/O (Input/Output) chip on the motherboard. The digital value is BIOS Calibrated and displayed by temperature software. Motherboard BIOS Calibration affects the accuracy of Tcase, or CPU temperature.

(B) Tjunction is acquired on the Cores from Thermal Diodes as analog levels, which are converted to digital values by the Digital Thermal Sensors (DTS) on each Core. The digital values are Factory Calibrated and displayed by temperature software. Intel Factory Calibration affects the accuracy of Tjunction, or Core temperatures.

Regardless, you've expressed concerns regarding temperature accuracies, with which I agree. Consequently, Section 9: Calibrations is devoted entirely to achieving accurate CPU temperature and Core temperatures. It works. You should give it a try.

Also,

Section 1: Introduction

... Since these sensors measure 2 distinct thermal levels, there is a 5c temperature difference between them, which is Tcase to Tjunction Gradient...

Section 5: Findings

(G) Existing test data from several Intel papers - http://arxiv.org/ftp/arxiv/papers/0709/0709.1861.pdf - as well as numerous independent sources show Tcase to Tjunction Gradient has a known Offset which is 5c, and is Calibrated at Load using a standardized Test Setup.

I hope this helps to calrify how CPU temperature and Core temperatures work.

Comp

Well, he still hasn't returned to offer any comments, so time will tell.