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Is my temperature sensor borked? (Changes INSTANTLY after installing water cooling.)

post #1 of 13
Thread Starter 

So I put together a little something something and after I got it all running my temperatures will go from like 15c to BOOM 27c INSTANTLY just by running Prime95 and will stay there. (Haven't tested for more than a minute.)

*When I had my air cooler it would jump fast but not instantly and it wouldn't stay there. Maybe the water cooling is just that much more stable and effective than the air cooler?

It's almost acting as if the temperature read outs are responding to the load percentage instead of well.. the temperatures.

For example:
0% load is around 13c
70% load is around 23c
100% load is around 27c
so on and so forth.

It didn't do this with my air cooler.


I'm going to pull the sensor of my cooling system out of the water tank so my compressor runs all the time instead of keeping the water at around 60-70f and see if my temperatures change accordingly. (I'm using a window unit water chiller in case you were like wut.)

Here's a video by the way.


Edited by Khaotik55 - 6/8/11 at 9:55pm
post #2 of 13
Is your room under or at 60F? If it is not your sensor is broken.

16C idle seems way to low, below ambient in 99% of houses.
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The Leviathan
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post #3 of 13
Thread Starter 
Quote:
Originally Posted by Murlocke View Post
Is your room under or at 60F? If it is not your sensor is broken.

16C idle seems way to low, below ambient in 99% of houses.
Quote:
(I'm using a window unit water chiller in case you were like wut.)
Actually I'm starting to think my sensor is fine, I just didn't expect immediate temperature changes like that. Reason I say this is because the top two cores were always hotter than the bottom two by 2-5 degrees and I'm seeing the same traits with my block.
Edited by Khaotik55 - 6/8/11 at 9:58pm
post #4 of 13
Quote:
Originally Posted by Khaotik55 View Post
message too short
Missed that.

Honestly, your ambients might just be so cold that the temps are changing so suddenly because the processor is just running so cold.
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The Leviathan
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post #5 of 13
Thread Starter 
Quote:
Originally Posted by Murlocke View Post
Missed that.

Honestly, your ambients might just be so cold that the temps are changing so suddenly because the processor is just running so cold.
I'm thinking the same thing. Also it's pretty stable at 28c because it's dumping the hotoutlet water into a 5 gallon res. so it's almost constantly getting the same temperature water as when it first started unlike in a traditional loop. Hence why I'm not getting the 1 degree creep ups every few seconds at start as with traditional air.
Edited by Khaotik55 - 6/8/11 at 10:04pm
post #6 of 13
Thread Starter 
Complaining, not at all. I'm worried because it seemed to good to be true because I have my chiller on a REALLY moderate setting.

*After about 10 minutes of prime95 it's now sitting at 30c max load so far with PERFECTLY even core temps. 30-30-27-27.

(My chip's first 2 cores were always hotter.) + I lapped my Q6600.

Don't feel so bad by the way, I'm jelly of your motherboard. Mine is 4-phase and super weak. I have insane vdroop. (1.55v to 1.4v) under load completely destroying my chances of anything over 3.6ghz. With this chiller I could probably hit 3.8ghz or maybe even 4.0ghz 24/7 on my q6600 but in order to do that you need a stable board with preferably 8+ phases.

If anyone is selling a LGA775 board that has 8 or more phases or is generally known to have really good voltage stability, let me know. I'm willing to spend around 80 bucks to take it off your hands.
Edited by Khaotik55 - 6/8/11 at 10:14pm
post #7 of 13
good question the lower the temp the more inaccurate it gets there is a whole guide on TJmax that explains this. My friend has q6600 and installed it with a AC7 ans we were joking around "OGM it's gonna run 4 degreeeaaaeesssee ceelllsssyuss ggibba gab" booted it up poped in the bios check the temps BLAMO 4C.
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Core 2 Haf
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by cdoublejj View Post
good question the lower the temp the more inaccurate it gets there is a whole guide on TJmax that explains this. My friend has q6600 and installed it with a AC7 ans we were joking around "OGM it's gonna run 4 degreeeaaaeesssee ceelllsssyuss ggibba gab" booted it up poped in the bios check the temps BLAMO 4C.
Well you see my chip is running at around the same temperature of the water that's circulating through it, so it's more believable.

*20 minutes of Prime95 still 30-30-27-27.

Edit:

I stopped Prime because it wasn't doing jack and I started IntelBurnTest. Within a minute it reached 38-38-33-33 however it once again is stabilizing very quickly and seems to be sitting at that for a while.

Edit2: 5 passes of IntelBurnTest @ high. 39-39-35-34
Edited by Khaotik55 - 6/8/11 at 10:31pm
post #9 of 13
you do know 2 cores will be different temps in core 2 because it's 2 dual core dies underneath the lid right? why wouldn't run at the same temps like i said if your making that basis on your temp readings from the CPU they aren't accurate no matter the chip or sensor.
Core 2 Haf
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Core 2 Haf
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post #10 of 13
Thread Starter 
Quote:
Originally Posted by cdoublejj View Post
you do know 2 cores will be different temps in core 2 because it's 2 dual core dies underneath the lid right? why wouldn't run at the same temps like i said if your making that basis on your temp readings from the CPU they aren't accurate no matter the chip or sensor.
I know that, that's why i'm not concerned with the two different read outs on the set of dies. I was concerned about the speed at which the temperatures jumped up and how it just sat there once a load was put on it. I'm not used to stable temperatures like that. (Coming from an old stock-ish heatsink)
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