OCing help

How good is my GA-7N400L motherboard for overclocking? i could not really find much information on the net, as all the reviews were of the pro 2

mazdarx7,
Pretty much like all of the others in the series that are 4 layer pcb, you will have to adj multi's by dip switch, and change fsb by cmos, the optimum minimum hassel mid level overclock would be to take a xp2500 for exampl, and run it at xp 3200 speeds by running it at 11x200, not a hard stretch with adequate cooling, quality ram, good power source and proper setup

is there a pci bus lock on these motherboards?

The PCI is linked to the AGP so if you set the AGP to 66 the PCI will be locked at 33.
Hood