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e8500 temps, sensors stuck?

Wildkat

Wildkat

Wildkat

Associate
Joined
15 Aug 2008
Posts
17
Hi

I have just put together my new pc (e8500, tuniq tower, msi m/b) which the intention is to hopefully overclock but at present is running at stock (3.16) speed.

PC has been running for about 10 hours now, not doing very much tbh, just installing, re-booting, re-installing, re-booting, re-installing, the usual new pc stuff. :)

Throughout this time both cores in Real Temp and the bios have shown 26c pretty consistently. Great I think, nice low temps.

So I run Orthos to see what happens. And in about 2 hours of running core 0 goes to 30c and core 1 stays put at around 26c (it briefly went to 28%). And I start to think, maybe this isn't right because I start to read about temperatures not being read right and sensors getting stuck.

So I run Test Sensors on Real Temp and it reveals Sensor Movement of 0 on both cores which it suggests faulty sensors?
 
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Hmm seems so.

I get 3+3 on my E8600 at 4GHZ.

Nice low scores even though it claims if your OC'd and Overvolted you may be at the high end of the 3-15 scale (I'm actually Undervolted at 1.056v).
 
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Not currently overclocked, before I do that I wanted to be sure that the temps on my system were all ok.

Currently I have the fan on Tuniq turned down to its lowest setting and after running Orthos for 1 hour Real Temp is reporting both cores at 26c which is where they started from.

So either I am some sort of pc building god (which is as likely as hell freezing over) or the temp sensors on the cpu aren't working.

I have read that under load they do work and report properly, however it appears mine aren't.

So the question is, is this a returnable CPU because of this potential fault?

According to MSI Dual Core Centre the temperate (which I assume is what the bios is reading from a sensor on the motherboard) goes from 23c idle to 32c under load from Orthos. I know these numbers are not always accurate.
 
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Ok, well just phoned Overclockers. Person on phone claims its a motherboard issue which goes against everything I read.

I can send the CPU back but he isn't happy I am sending it back, I am not happy about sending it back because I have to take the whole pc to bits now.

And I am expecting the same CPU back with no fault found now tbh. Not especially happy with the situation.
 
Tetsu said:
That is very likely to happen. My e8400 had a broken sensor but i just left it.
Click to expand...

Well I have 2 broken sensors that don't budge when under load. So I have no idea about the temperate of my CPU cores.

If only 1 sensor was broke I would take an educated guess that if that if the other one read sensible temperatures then the one with the stuck sensor was ok too.
 
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On my E8500 the sensors are dodgy. At idle one core is constantly at 36, never ever moves and the other at 32, it goes up normally under load.. sort of, still abit dodgy. Tested with real temp.

Core 0: 0
Core 1: 7

Dodgy :D, its not problem though the cpu still works.
 
Wildkat said:
Well I have 2 broken sensors that don't budge when under load. So I have no idea about the temperate of my CPU cores.

If only 1 sensor was broke I would take an educated guess that if that if the other one read sensible temperatures then the one with the stuck sensor was ok too.
Click to expand...


Sorry i wasnt suggesting you live with it, I agree if you've got 2 broken something must be done.
 
Tetsu said:
Sorry i wasnt suggesting you live with it, I agree if you've got 2 broken something must be done.
Click to expand...

Sorry about the way I typed it my response, I didn't mean it to sound like that.

Seems to be a very common fault in the cpus. Like you I could live with 1 not working but not both.
 
No worries mate I totally understand your frustration. If it was me i'd send it back but I'd hate for it to be a compatibility problem with your mobo, but i'd suppose at least you'd know either way then.
 
Tetsu said:
No worries mate I totally understand your frustration. If it was me i'd send it back but I'd hate for it to be a compatibility problem with your mobo, but i'd suppose at least you'd know either way then.
Click to expand...

So would I. But from what I understand the core temperatures are read from the sensors inside the CPU and not the motherboard sensors. Can't find anything from searching the web saying that the MSI P45 Platinum has any compatibility issues with these chips.

I suppose my worry here is, are these the sensors that the CPU uses to determine whether to shut down if they get too hot or is there some other mechanism used? In the end I want to overclock this system and at the moment I have no confidence in being able to do that.

Thanks for your replies btw :)
 
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