overclocking help please

[Dr_plague]

I know i need a new system but
I am wondering if i can get anymore performance out of A G41C-GS. I know its not a meant nor is great for overclocking, the highest i can manage stable on a E5500 is 3.3ghz.
Also I have gone to 3.6 on a G41D3C. what gives?

The options i can change is the
Dram Volt.
NB volt.
Vtt volt.
GTLREF volt.
FSB
PCIE clock
and multiplier.

(i can not change the Vcore) T_T

ill update info as needed. Any help will be appreciated

 

[Cons29]

well, vcore is one of the most important, or probably the most among the voltages.