Second card PhysX question

[sadfacebunny]

I have a gt520 in my computer i got it for about 20-35 bucks one day and i have now ordered a gtx 560ti. I was wondering what kinda of performance boost i would see by setting up the gt520 on only physX and the running th gtx560ti ? will i see a boost? What kinda of boost will i get? Any information on the topic would be greatly appreciated

 

[truegenius]

you will see a huge performance increase with a 560ti,
Further you will see boost in phyx enabled games with 520 as phyx and 560 as main (only when compared to a single 560ti)