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Overclocking E4400 temps issue.

post #1 of 6
Thread Starter 
For a bit of fun I am overclocking my old e4400 which I haven't done for a couple of years now, and coretemp is telling me my temps are 65 under load with stock core and stock cooling.

I'm confused, because I know I have overclocked this with stock cooling to 3Ghz+ before.

It's also really confusing as there are so many conflicting ideas about what the tjmax for these chips is.. Coretemp says 95, but I have heard others say 85 and others 100.

Mine appears to be an L2, which has a thermal spec of low sixties if I recall, but I don't see how mine can be at 65 under load without being overclocked, and am even less sure about how I managed to get to 3Ghz in the past.

If someone can clear this up for me I would appreciate it.. are the coretemp readings of 65 under load likely to be correct? If so, how was I getting away with 3.0Ghz overclock when I got this chip? confused.gif
post #2 of 6
TjMax for an L2 e4400 is 70c according to intel here

so change coretemps offset to match and it will show actual temps (ie -25c)
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post #3 of 6
Thread Starter 
Now I'm more confused.. so at stock it would be 40 under load?? That doesn't seem right either?
post #4 of 6
at stock speeds that seems ok

i am sure before i overclocked i was floating around those temps on an E6400 i used to own
Edited by aramil - 10/5/11 at 11:04am
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by aramil;15189531 
at stock speeds that seems ok

i am sure before i overclocked i was floating around those temps on an E6400 i used to own

I think that it seems unrealistically cool for stock cooling.. also, I noticed there is an update on that article that says:

"Update: Unfortunately, the data provided by Intel is not actually what was expected. The developer of Core Temp received an email last month from the presenter of the August IDF presentation on the DTS specifications which said that Tjunction Max would be disclosed for all processors in Taipei. In reality, Intel disclosed a value known as "Target Tjunction," which should not be used as Tjunction Max as it will result in unrealistic temperature readings. Taking the earlier example of the B2 E6600, if you had a low ambient temperature, changing Tjunction Max so that it aligned with the Target Tjunction may result in temperature readings close to or below 0°C when at idle. Temperatures below ambient aren’t possible on normal air cooling."

This seems to indicate that the "target TJ" is an unreliable indicator of the actual TJ?

I have had my e4400 running for over two hours now at 3Ghz, and coretemp with the maxTj of 95 says it is 81.. doesn't this seem a more likely temp for this oc on stock than 56 (the value I get after offsetting 25 degrees)?
post #6 of 6
Doesn't really matter. Keep distance to TJMax (whatever TJMax you want) >20-30 and forget it.

software like RealTemp can display "distance to TJMax" which is really what you should use.
tempratures based on this are always aproximate.

Having a snoop around online most people think the L2 range Tjmax is 85c and the newer m0 is 100c

but as i said distance to Tjmax is more important than what Tjmax is.

so @"65c" under load with a "95"c Max you are still 30c "distance to Tjmax" under the chips max.

realtemp and tjmax explained

Hope that makes sence.
Edited by aramil - 10/5/11 at 1:21pm
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