The "Undervolting" Guide

[unclewebb]

is there anyway to undervolt an i720qm?

The "Undervolting" Guide

[sean473]

is there anyway to undervolt an i720qm? the advanced cpu settings are not showing up in RMclock and i also cant tick the p-state.

no u cannot undervolt core i series processors.. intel's changed everything so undervolting is impossible.. it only works for core 2 quad and below...

[vimvq1987]

Just curious: Undervolting on Core i processors is totally impossible, or just we've not known the way yet?

[unclewebb]

Intel removed the VID, requested voltage, information from model specific register MSR 0x199. Because of this, in the Core i design, you can no longer request how much voltage you would like the CPU to use. There is no VID information in register 0x199 anymore so Core i CPUs don't look in there before setting the core voltage. Some older software designed for Core 2 CPUs can read data from this register and it might make you think that it is reading VID information but it isn't.

Intel says this is no longer possible and there is nothing in the publicly available documentation to show how to do this if it is still possible. If anyone discovers a way, they'll be an instant hero but so far there is no software available to do this.

[vragon]

hi every one,
I just bought an laptop with SL9600 CPU.
I tried to use RMCLOCK to undervolt but it seems not working.
I run RMCLOCK on windows 7. I set the SuperLFM FID 6.0x VID=0.900V
I just check only the box of this setting to be sure that I'm running the correct setting. But when I use orthos to stress CPU+RAM. I see in HWmonitor. The speed of CPU jumps to maximum speed 2.1Ghz, and the voltage runs from 0.925 to 1.025V????!!!
Even when I leave the laptop idle the voltage still is 0.925 instead of 0.900V?
So what's wrong with my work?

[unclewebb]

Try this vragon:

The "Undervolting" Guide

An SL9600 supports IDA mode and has a maximum multiplier of 9.0 for a total speed of 2400 MHz on one core while the second core is in the C3/C6 sleep state. This can happen automatically when set up correctly. RM Clock is not accurate at reporting IDA and it does not officially support the 45nm CPUs so there might be a few small problems but it should work OK when set up correctly.

[Melot]

Anyone know if there's a problem with AMD Athlon II M340 processors?
I can't seem to find the Advanced CPU settings tab in RMClock

[DEagleson]

RMClock is not updated to work with AMD 45nm CPUs from the Athlon II / Turion II family.
You could perhaps ask the developers of CPUGenie if their application supports AMD CPUs.
But its not free and only offer 30 day trial.

[wangbrother]

one question
will i loose the garantee ?

because the hardware can take damage of this

[unclewebb]

Are there any reports in this 496 page thread of people damaging their CPUs?

If you reduce the CPU voltage too much your computer might become unstable and it might crash or reboot. If it does that, give it some more voltage and try again. Pretty hard to hurt a CPU.