FE Processor overvoltage?

I have a VAIO FE11S (European FE Model, with T2400-1.83Ghz) and CPUz reads the CPU voltage at 1.4V when in full speed. The VID (requested voltage by the processor) is correctly set at 1.263V though. Similarly when the CPU is running in the lower Pstate (1.0Ghz, VID set to 0.95V) the voltage reading is 1.02V

My first thought was that the CPUz reading is wrong, but after some experiments I managed to run the CPU 100% stable at full speed (1.83Ghz) with the VID set to just 1.0V, which resulted in a CPUz reading of 1.06V. For any speed lower than that (1.66Ghz and lower) the minimum VID (0.95V) is enough for stable operation. (**** you Intel for limiting the minimum VID just to promote LV and ULV models!). The voltage change caused a 8C drop in full load temperature when in full speed!!!

Anyone willing to help please report your Voltage reading. So far I've managed to get one only with CPUz, if you have any luck with another program let me know.

 

I use NHC which is the Notebook Hardware Control.
I think what you have described is basicaly an undervoltage process.

The chips are made from 1 big silicon wafer, and the quality of each chip maybe different, hence we get several different speed and quality. The default voltage being used is the "average" value to compensate for the lower quality chips. This is why we can do the undervoltage which basically provide lower voltage into the chip without sacrificing its performance and stability.

Since the chips are slightly different in quality, the minimum required voltage maybe different from chip to chip eventhough they are the same type/speed.

One of the major advantage of undervoltage is the decrease in CPU temperature and minor decrease in battery consumption.

There have been several discussions of "undervoltage" in this forum, and you may want to do the search for further explanation.

 

Im gettin 1.4V also when running on full speed with cpuz

 

Yeah. I agree. Processor Voltage from 1.004v~1.404v