Okai people this is the problem...see im planning to upgrade my graphics so im going for the nvidia geforce gtx 560 ti.
Now the thing is i have an nvidia 9800gt at stock and just realised that i cannot do a sli between this two.So is there any way to use this 9800gt efficiently..
Sell it or lend it to someone. Being a Physx card provide much less benefit than being a main GPU for another rig. If you can not sell it or do not want to part with it, just keep it as spare. It may come in handy later on.