DUAL 8800 GS overclock and vcore

[noobpwnr]

I would like to overclock my dual 8800gs graphics card.
my rig is :

Operating System
MS Windows 7 Ultimate 64-bit SP1
CPU
Intel Core 2 Quad Q6600 @ 2.40GHz
Kentsfield 65nm Technology
RAM
6,00 GB Dual-Channel DDR2 @ 333MHz (5-5-5-15)
Motherboard
http://www.abit.com.tw/ FP-IN9 SLI(C55-MCP51) (Socket 775
Graphics
L194W (1440x900@60Hz)
384MB GeForce 8800 GS (XFX Pine Group)
384MB GeForce 8800 GS (XFX Pine Group)
ForceWare version 301.42
SLI Enabled
if anyone could say the best settings for overclock i would aprecciate.
i also dont know the graphics vcore(core voltage)...

 

[fallen17754]

dont touch the voltage unless you know what you're doing honestly, and dont go above a 20% OC for the core/memory/shaders. just take your core clock and multiply it by 1.15 and set it to that, same with the memory and shader. use msi afterburner and use a custom fan profile so your cards dont run too hot. if that 15% oc is stable just do a 10% and settle with that