not having any experience in oc'ing and having a 850xt agp is there enough gain to make it worth while? I'm using atitool and have the understanding of the process to oc its just a matter of getting it done. also what can I expect to gain from the default core/memory. thanks
Try it and find out? Every card is different, but you should get a performance increase, however small.
i am no expert on that card but when i had the x800xt i managed to get around 800 more points in 3dmark03 etc, i dont think your see any real world performance increase though. does that card have sm3 support?
sm3 did't come in till x1xxx you should be able to get it to the Platinum Edition speeds. but i dont know them of the top of my head