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[Solved]So....What is the real meaning of IDLE

post #1 of 7
Thread Starter 
Well, I've seen many people posting their CPU temps about their Idle temps. What do they really mean on Intel processors?
Does it mean that if I overclock to 4Ghz, and it stays at 4Ghz with 0 to 10 % load
or
Are the Intel C-State Tech enabled and Intel Speedstep tech enabled while I overclock my CPU to 4Ghz still.

Thanks.
Edited by O.CModderz - 12/9/11 at 7:23am
post #2 of 7
Idle in general means "NO LOAD" and it downclocks to save power hence lower idle temperature.
Edited by Ken1649 - 12/9/11 at 12:45pm
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post #3 of 7
It means "not processing". You can have a 4.0Ghz CPU idle without it downclocking.
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post #4 of 7
Thread Starter 
Ok thanks to both of you. Really appreciate it.biggrin.gif
post #5 of 7
Conversely, not all loads are equal, and someone asking for load temps generally means temps under stress tests.

Both encoding and linpack will use all of my CPU cycles, but linpack still gets the CPU 30C hotter because each on of those cycles is doing more.
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post #6 of 7
Quote:
Originally Posted by O.CModderz View Post

Well, I've seen many people posting their CPU temps about their Idle temps. What do they really mean on Intel processors?
Does it mean that if I overclock to 4Ghz, and it stays at 4Ghz with 0 to 10 % load
or
Are the Intel C-State Tech enabled and Intel Speedstep tech enabled while I overclock my CPU to 4Ghz still.
Thanks.

When a core is considered idle, it really is running a specialized program known as the "idle process". This program essentially spins the core on the execution of the 'NOOP' (no operation) instruction; this incurs the lightest possible processing load on the core (essentially as the name implies: do nothing). If you do not disable C-State and Speedstep, when a core is idle the i7 processor downclocks, via a lowered multiplier, and undervolts the core's VID, regardless of whether the CPU is overclocked or not. This stuff is done specifically to ease overall CPU power consumption (and not much else). Likewise, if C-State and Speedstep are disabled, the core will stay at the same clock and VID voltage (vdroop does effect the actual voltage) regardless of whether it's idle or not (or whether if its overclocked or not as well).
post #7 of 7
Thread Starter 
Uh.....now I'm getting more confused blinksmiley.gif:
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