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Unlocked Phenom II X3 temp issues

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October 31, 2009 2:50:58 PM

I recently unlocked the fourth core on my newly purchased Phenom II X3 and its been working great but with one issue. The cpu temp shows up as zero in all the applications I use for temp readings (speedfan, core temp etc). It worked fine when it was on 3 cores so it seems that unlocking the fourth caused the sensor not to work. Any ideas on how I can get it back?
Thanks in advance.
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October 31, 2009 5:01:25 PM

the fourth core is usually a defective core so unlocking them is sometimes problematic

u can fix it if u go back to 3 cores or go back to 3 cores for a few days and then try a second unlock

chances are u sill have to use only 3 cores but u might get lucky
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a b à CPUs
October 31, 2009 6:01:52 PM

Mine did that too when I unlocked it but the core was completely stable, just the heat sensor goes out.
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October 31, 2009 6:18:21 PM

bige420 said:
Mine did that too when I unlocked it but the core was completely stable, just the heat sensor goes out.


We're you able to OC at all with the 4th unlocked? I can get it up 3.2 with the stock cooler on 3 cores but it doesn't want to do much with the 4th.
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February 9, 2010 8:34:41 AM

hey whats up guys im having the same exact problem with a 550be i have got it stable and oc'ed to 3.9 ghz but i cant get an accurate temp reading because of this if anyone comes up with a solution let me know im real interested
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February 9, 2010 9:27:34 AM

There really is no solution, this happens alot on unlocked phenoms. Im pretty sure you can still look up the temp in bios.
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February 10, 2010 9:09:28 PM

ya u are right it just sucks cuz ya cant tell what it is under load o well i guess there has gotta be a downside to stuff like that guess i better just get the 965
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February 10, 2010 10:11:32 PM

Use Everest ultimate. I unlocked mine and the individual CPU temps went bai bai, but it still reads the overall CPU temp, which is the one that matters.
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February 11, 2010 12:07:13 AM

Everest Ultimate or If you have a Gigabyte MOBO the Easy tune 6 will also shoe the CPU temp correctly (though the individual core results show as 0C - it happens on all of the CPUs when you unlock the extra core (including the X2 550 also ) so is normal !

I've got my X3 running at 3.2 GHz. and the 4th core and it has had no problems (I've been running it with the core unlocked since Mid December @3.0GHz. but the temps were a bit high on the stock fan - but I just got a new Heatsink\fan so have it running at 3.2 now (will be testing a higher OC after awhile -letting the new Thermal paste set a bit before pushing it ) - Though the temps are already much better (stock HS was 45C idle 70C Prime95 @ 3.0Ghz - Cooler Master TX3 (got it for $4.99 from newegg - $14.99 sale price and $10 Off next purchase Code) Temps are 35 C idle and 52 Prime95 @ 3.2 GHz. !!) - Here is a Screenie of Everest and Easy Tune 6 showing the CPU temp correctly --

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