Could you/Would you put to use a spare ASUS DirectII 560 TI in a Rampage IV board for Physx only? I have a 770 running primary graphics with a I-7 4820.Is there any advantage in doing so? Can you do it?

I have built many systems. Usually the "boot" to post is the best moment. Not this time for me.I am stumped, and have followed here for years so I appreciate any suggestions. 1 x ASUS GTX770-DC2OC-2GD5 GeForce GTX 770 2GB 256-bit GDDR5 PCI Express...