Core Temperatures on stock E8400 - seem normal? high?

[9nines]

I am wondering if these numbers look right for an E8400. It is on a Asus P5Q Deluxe motherboard. It is a stock speeds ? I am checking to see what temperature I get at stock before trying to overclok.

I used CPUID HWMonitor to check core voltage and temperatures. To stress CPU I used Prime95 64 bit.
I ran Prime95 for 30 minutes.
Idle is 39 Celsius on each core.
During the stress test using Prime95, each core was around 48 to 50 most of the time. The maximum was 53 Celsius on Core 0 and 52 Celsius on Core 1.



For stock speeds, do those temperatures look normal or are they high for a E8400?

What are normal temperatures for a stock E8400?

 

[iooiioio]

I built a machine for a friend with a stock HSF and stock X3110 (which equals the 8400) and his stayed around the same. He was also running 2 8800 GT's in SLi, but had 7 fans running in the case.

 

[9nines]

Thanks. I am using a Xigmatek HDT-S1283 heat sink, so I was hoping for lower than stock heat sink.

I have it in an Antec 900 with stock fans. I have the back and front on low speed and the bigboy on medium speed.

 

[Gillbot]

Temps look ok to me, though that idle temp seems a shade high.

 

[9nines]

I am using Speedfan at same time as HWMonitor, will doing another stress test.

While HWMonitor was showing Core 0 at 51 Celsius and Core 1 at 50, SPeedfan was showing Core 0 at 46 and Core 1 at 45. Seems both would be reading the same measurement. Weird.

 

[OCGuy]

Temps are fine, you are far away from Intel spec (71.6c) and your TJ max (95C estimated)

 

[9nines]

I then found this link: http://www.xtremesystems.org/f...howthread.php?t=179044

It states that Real Temp correctly measures Wolfdale chips. It recognizes my chip as E8400 and it tests whether the sensors work - mine pass.

It shows my idle is 29/30 on both cores. And stress is 42 on both.

I guess the other programs do not work with the 45nm chips well.

 

[9nines]

Here is the progammer of Real Temp explaining it:

At idle, the E8400 I tested reports temperatures that are higher than the actual temperature and the E6400 I tested does the opposite and reports temperatures that are lower than the actual measured temperature.

The difference is slight at first but the further temperatures move away from TjMax, the larger this error can become. Programs that use the previously mentioned formula and do nothing to account for this error will end up reporting idle temperatures that are either too low or are too high. Worse yet are programs that try to correct for this error by adjusting TjMax higher. Now you'll have inaccurate idle temperatures as well as inaccurate load temperatures. A quick Google search will show how wide spread this problem has become.

This issue first came to light when top notch air coolers like the Thermalright Ultra 120 eXtreme were introduced. Some users with the original Conroe core processors were ending up with idle core temperatures being reported that were less than the ambient temperature. The eXtreme is a great cooler but even it can't change the laws of physics. Reported temperatures below ambient when air cooling are impossible to achieve. I also noticed this problem with my original E6400 but didn't realize the magnitude of this error until I recently purchased an E8400 processor.