What is the max of your budget?
Tough one, probably sell the 660 for R1600 and get a new gpu, 770
No one asking the right questions xD lol
what are your exact system specs bud?
JOKER strikes again!!!
CPU: Intel i5-3570
MB: MSI H77-MA G43 Gaming
Ram: Corsair Vengeance 1x4GB 133MHz + Kingston 1x4GB 1333Mhz
GPU’s: MSI GTX 660 OC
That board doesn't support sli as far I know bud.
Single card solutions are def a better option in your case.
Sell your 660, should get around R1800 for it and then look at grabbing a R9 280X.
Something like this:
http://www.rebeltech.co.za/index.php?main_page=product_info&cPath=20&products_id=11135
Make sure the PSU has enough juice first though.
The card that Joker recommended needs a 600W power supply.
No it doesn't, don't read the manufacturer nonsense.
a 280X will run on a good quality 500w without a problem.
That board doesn't support sli as far I know bud.
Single card solutions are def a better option in your case.
Sell your 660, should get around R1800 for it and then look at grabbing a R9 280X.
Something like this:
http://www.rebeltech.co.za/index.php?main_page=product_info&cPath=20&products_id=11135
Yeah I know; still I could easily get a new MOBO . [And like I said I could get a 2nd 660 for a +-R1000]
Picking up a Z77 board now will be extremely difficult as most of them are EOL and there is almost no stock available.
If you do manage to find one and it supports sli then yes 2x 660's will be great.
What psu are you running?