Will disabling Core C6 state affect sleep? AMD athlon 860K

[herrmant]

I disabled c6 state because I will get annoying coil whine from the motherboard (which msi said is normal). My question is, will leaving C6 disabled affect the system in sleep mode or will it just make the CPU use more power?

Thanks in advance.

Heres my specs

MSi a68hm grenade
AMD Athlon x4 860k (non OC'ed)
Antec 450w
xfx r7 250x
cooler-- CM tx3

 

[MarkW]

All C6 is is a very low power state that the CPU can drop into when it is not working. C6 was primarily intended for mobile devices, but it has a simple benefit for desktops too. When the CPU drops into C6 state, its pulling almost no power. Which means it is cooling down. Fast.

 

[nukemaster]

I do not think it will effect sleep.

Unfortunately have voltage and clock adjustments many times a second and the fact that the regulators on a board are switching at a fast rate causes the coils to emit noise. Some boards do it and others do not(to add to this even in the same product it can vary)

I have an X58 board that has a similar coil whine issue, lucky for me just turning off C1e was enough to remove it.

You can also prevent cpu idle with a registry trick, but it can lead to a hotter running cpu at idle.

 

[herrmant]

Thank you both for your answers. so c6 isn't the sleep state right? And the c6 is only when the chip is idling in windows correct?

 

[nukemaster]

Yes.

 

[MarkW]

Core C6 State
Individual threads of a core can enter the C6 state by initiating a P_LVL3 I/O read or
an MWAIT(C6) instruction. Before entering core C6 state, the core will save its
architectural state to a dedicated SRAM. Once complete, a core will have its voltage
reduced to zero volts. During exit, the core is powered on and its architectural state is
restored.

Bottom line:
Coil noise or coil whine is a phenomenon in electronics which produces undesirable audible sound. In magnetic resonance imaging "coil noise" is that part of total system noise attributed to the receiving coil, due to its non-zero temperature. Its a fan or power coil vibration.

So coil whine has absolutely nothing to do with the CPU, and disabling the C6 state has nothing to do with anything but the CPU.

 

[herrmant]

The coil whine stops when I disable core c6 states so maybe the sound is at a different fequency that I can here... well at least my computer doesn't sound like an MRI. That would be REALLY annoying. Lol

 

[nukemaster]

If you had power applied and removed as often and fast as a coil from a switching regulator you would make noise too

I do agree my X58 system was very annoying with its coil whine. I never even noticed any increase in temperatures with C1E off. All other power savings are still on.