it will have a good performance inprovement ONLY if your graphics card is getting so much data to process that FULLY ultilise the PCI-E bus.Just run it on 115mhz and everything should safe and sound.
you press "DEL" or "F2" or "F11" it all depends on your motherboard.in the setting there should be a overclock menu.i think it would help if you post your whole system spec.
I'm much newer to all this then the guys who have helped you so far but cant a BIOS flash sometimes unlock an OEM mobo assuming it is not on the most up to date version?
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