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VERY different values REAL TEMP vs SPEEDFAN

Last response: in Overclocking
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March 30, 2010 12:04:39 AM


I am overclocking my i7 920 and everything is going really well but I've been using Real Temp 3.4. I decided just to look at Speedfan and the temps are much different.

Idle Real Temp will say low 30C while Speedfan will be low 20s. Also at load Real temp will be around 65C while Speedfan will be 50C.

Seems to be a typical 15C+ differents. Is this normal, I assume Real Temp is the way to go.


Thanks
a c 86 K Overclocking
March 30, 2010 1:08:36 AM

Yep, realtemp is best. Try Coretemp and HW Monitor too. I like RT and HW monitor.
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a b K Overclocking
March 30, 2010 1:14:53 AM

^
+1

HWMonitor, and Realtemp are the best without paying $$ for full feature software like Everest Ultimate.

Both Realtemp/Everest Ultimate may require some configuration to get them to be as accurate as possible (specifically with the TJ max I believe). I saw a thread on how to do this, however I cannot find it in my browser's history. I recommend you google some information on how to calibrate the software.
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a c 86 K Overclocking
March 30, 2010 1:20:47 AM

i7 920 is 100C TJmax. RealTemp has a calibration feature using prime 95 built into it.
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a b K Overclocking
March 30, 2010 1:23:40 AM

Conumdrum said:
i7 920 is 100C TJmax. RealTemp has a calibration feature using prime 95 built into it.


:o  I see.
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March 30, 2010 1:36:58 AM


So this isn't an issue (picture below)

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a c 86 K Overclocking
March 30, 2010 3:24:48 AM

No, since speedfan is wonky. It's not really used for CPU temps much by peeps in the know when others are better.
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Best solution

March 30, 2010 6:08:28 PM

there is nothing wrong with speedfan, it just uses a different tjmax than realtemp, or coretemp too for that matter.

you can easily calibrate speedfan, but first i would recommend downloading coretemp, and hwmonitor. compare them with real temp. ideally coretemp should be 5c lower than realtemp and hwmonitor. if that is the case, realtemp is accurate. to calibrate speedfan temps follow the path:

configure-->advanced-->chip: intel-->temp 1/2/3/4 offset-->set to: (choose the number that inreases your speedfan value to equal the realtemp value), save, and you're set.

so if speedfan says 30c and realtemp 40c, in speedfan change the offset to +10 and now speedfan will read 40c.
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March 30, 2010 6:29:12 PM

TUFFLUCK .. thanks for your advice.

This is what I got. HWMonitor, CoreTemp & Real Temp are all very close. But Speedfan is way off.



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March 30, 2010 6:33:31 PM

swtrader said:
TUFFLUCK .. thanks for your advice.

This is what I got. HWMonitor, CoreTemp & Real Temp are all very close. But Speedfan is way off.



http://bluedoggie.com/temp/CPUTemp.JPG


coretemp/realtemp are the more accurate ones. i am more inclined to believe speedfan is actually more accurate than realtemp too, because its obviously 15c off exactly from coretemps readings. the only problem is that it is probably using a 115c tjmax instead of 100 like coretemp. if you want to use speedfan indefinitely, just change the offset by +15 and you will be set.

hwmonitor isn't off by much. 1 or 2c can happen in a rather quick moment, so some utilities take a second to catch up with the actual temps. temp monitoring utilities are run based on the tjmax of processors, and not all processors have the same tjmax settings, hence why all these programs can return different values.
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March 30, 2010 6:55:07 PM

Best answer selected by swtrader.
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