|The Radeon HD3300 is probably the best IGP currently available but it's still no match for a real video card. As for overclocking it, did you try reading the BIOS chapter of your manual?|
"VGA Core Clock control
Enables or disables the control of VGA Core clock.
VGA Core Clock (Mhz)
Allows you to manually set the VGA Core clock. The adjustable range is from 200 MHz to 2000 MHz.
This item is configurable only if the VGA Core Clock control option is enabled. (Default: 650)"