Will it work?

[tintin67]

I have an Abit KN9S mobo with 4gb of PC-6400 Elixir ram that i'm currently in the process of upgrading as money allows. I can get the following ram for £15, OCZ 2GB (2x1GB) DDR2 800MHz/PC2-6400 Platinum XTC Memory Kit CL4.

Is ok for my system & will it work with what i've already got?

Thanks