Anyone manage to undervolt the 6750M on NP700Z5A?

Just wondering if anyone has managed to undervolt the 6750M. I'd like to lower the voltage to 0.955v or so to reduce temps under heavy load (and possibly OC a bit as well for a performance gain without increased temps as they are already too high at stock clocks/voltage - ~80-87C at 100% load). From what I have read, Mac users have been doing this successfuly for a while now under Bootcamp.

I tried MSI Afterburner, but the voltage slider is locked, and it wont unlock even after disabling ULPS and enabling unofficial overclocking in the MSI config file, as per the instructions listed here: GUIDE for Unlocking MSI AfterBurner - OverclockersClub Forums

I then tried ATI Tray Tools but it only seems to detect the primary integrated Intel 3000 (fails to start because of "ATI Board not detected" error), even when set to high performance.

Cheers for any input/suggestions.

 

I've been trying to undervolt the 6750m as well, and no luck with Afterburner either. I have the HP dv6-6135dx with A8-3500m and the ATI Tray Tools is only detecting the discrete 6620G, not the dedicated 6750m. I've also tried setting the tray tools to be high performance, but still the same. I just think the whole switching thing is weird, HWiNFO is showing correct clocks for the 6620G, which also matches ATI Tray Tools' readings. But when I check my stock 600/800 6750m, HWiNFO shows 100/40.5.