sli 2 different graphics cards

[kevin47]

i have 3 queries that need answers.
can i sli a gtx 650 ti boost with a gtx 760?
will a power supply cx500m 80 plus bronze be strong enough for sli?
finally is a GTX660 2GB Jetstream TI boost 2gb better than a GTX760 2GB DDR5 256B
where i purchase my pc components, there is only a $20 gap in price between the 660 and 760 respectively.
thanks

 

[Gam3r01]

For SLI no, they have to be the same base card.
The power supply is a bit low for SLI.
The 760 is better off than the 660.