Need suggestions for computer upgrades.

[Bunnychaser]

I have a blackwidow tourney, and a rat 7 albino. They work well.

GPU hierarchy: http://www.tomshardware.com/reviews/...ew,3107-7.html

Mouse just needs to be be of proper quality and feel good on your hand for gunz. all this super precision or higher dpi isn't really goin to help you.
I'd assume your current videocard is capable of producing 250fps. theres no need to upgrade for gunz related reasons.
keyboard I would suggest you check if it has unlimited keystrokes for gunz. certain keyboards only allow a certain amount of keys to be pressed at the same time or very quickly after each other resulting in certain k-style movements not possible. I believe USB is limited to 6 keystrokes regardless of the keyboard so you might want to plug it in the keyboard slot.

USB is not limited.