C-state OFF = Lower RAM/CPU performance!!!!

[Majed]

i have strange problem!

i read an article at TOM'S HARDWARE GUIDE about Does Power-Saving Technology Kill SSD Performance? .
Any way after testing i found it it's right.

after Disabling C-state the performance back to what i should expect from my ssd, and that was a good news.
but i found the performance of my RAM become low! along with the cpu performance.
here with normal c-stat is on



after disabling c-stat
Memory read reduced to 18GB.
Mem Write to around 14500MB!


but L3 Cache increased
read increased to 30GB, Write increased to 25GB from 17GB ... and the Latency to around 3.7ns also.

in CINEBENCH 10 my score with c-stat On was around 22k now after disabling it turned to around 20k~19K!.

current setting for the Ram :
Ocz Blade DDR3 DDR2000 cl9 -> 1645 cl7 (1.65v)
MB: Asus P6T-D v2.
-------

I don't now why!
C-state should work as power-saving tech. only!

any idea what's wrong here?