gtx780 sli with gtx670 or gtx760

[sadik123]

Can i connect 2 deffirent GPU togther?i have gtx780.
and i want to buy gtx760 or gtx670
Can i? or the GPU should be the same?
I WANT IMPROVE Performance
I well use one monitor

 

[Suztera]

no you can only SLI the same gpu, so you need another GTX 780.
You can use the GTX 760 for Physx but that will only improve performance in Physx games.