Temp readings toggling in speedfan?

By spindrjr
Jul 4, 2009
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  1. So I just built a new system for myself and I have been running prime95 to test out some overclock settings and using speedfan to watch my temps. Occasionally when I come to check on it, Speedfan is toggling in-between two different temps for 'system' and 'cpu'. IE, cpu will show the (real) temp of 63 C, and system will have its real temp, then a few seconds later they will both switch to bogus negative numbers (of a different value), then switch back a few seconds later. This goes on forever until I open a menu in speedfan or restart it.

    Has anyone ever heard of this happening?

    The system in question is an i7 920 on an asus p6t.
  2. fimbles

    fimbles TechSpot Evangelist Posts: 1,241   +125

    I have never heard of this happening before, i would not worry though. blame it on speedfan and try a diffrent temp monitor.

    The old pentium 4 thats been running for years in my bedroom reads a core temp of -136 degrees in speedfan.. :)
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