|If better gaming performance is what you're after, you'll need a better video card. The HD 3650 isn't much good for gaming.|
Your motherboard officially suports up to 1600MHz FSB & your CPU runs at 800MHz FSB. The key to overclocking your system is to run the fastest FSB available while maintaining a FSB:DRAM frequency ratio of either 1:1 or 1:2. You didn't state what RAM you have but I'll assume it's DDR2-800, that means you should be running 1:1 ratio. If you're using Win7 64-bit, it would help to add more RAM, if you have Win7 32-bit, you're good with 3GB.
Here's your overclock settings:
AI Overclocking = Manual
CPU Ratio Control = Manual
Ratio CMOS Setting = 7
FSB Strap to North Bridge = Auto
FSB Frequency = 400MHz
PCIE Frequency = 100MHz
DRAM Frequency = DDR2-800
Transaction Booster = Enabled
Booster Level = 0
CPU Spread Spectrum = disabled
PCIE Spread Spectrum = disabled
The above settings (if they work) will run the CPU at 2.8GHz @ 1600MHz FSB with a ratio of 1:1. If it boots & runs stably & you want to try for more, simply raise the ratio from 7 to 8. That will run the CPU at 3.2GHz, however, a CPU voltage increase may be necessary.
If the system won't boot with these settings, unplug the power cord, use the Clear CMOS jumper to reset the BIOS (move jumper to the "clear" position, wait a few seconds, then move it back) then start over.