Running multiple video cards [GTX660 TI + GT640]

[OSXcody]

I'm currently running a GTX660 TI successfully on a GA-Z77X-UD5H mobo (OS is 10.8.1).
However, I want to add some more monitors. Can I just add a GT640 to drive extra monitors since it works OOB?

Thanks!

 

[Hamburglar]

I am running gtx 560 ti and gtx 260 on 10.8.2 driving 3 x 24 inch samsungs at 1920 x 1200 each. Works great OOB. i didn't use the multibeast kext nor the nvidia cuda drivers. mobo is ga-z77-ds3h - see sig.

 

[OSXcody]

That's encouraging, I imagine it'll work then. Thanks!