Graphics GTX 760 + GTX 560 - SLI is it worth it?

Hey all just got my new GTX760 through, was wondering if Multi GPU would help performance in anyway?

Now im sure i heard that generally you want the same 2 cards?

I know I will need to get a new PSU (have a 600W atm) and I only have 2 screens atm. No plans in the future to have 3 screen gaming at the moment.

Specs are-
i5 3570K oc'd to 4.0GHz
12GB RAM
Gigabyte Z77-D3H
http://valid.canardpc.com/2608377 (note the clock speed is different, I could not sustain this level of OC due to (i suspect) power issues).

Both GPUs are MSi, the 560 being the 1GB Ti Twin Frozr OC II thingie and the 760 2GB OC edition.

Sorry if this seems basic, multi GPU/SLI is not a subject I know much about.

 

you cant anyway? need to SLI identical cards? just sell the 560Ti

 

All cards need to be the same for sli

 

Haha told you im noob! That settles that then, sell the 560 an put the cash towards some SP2500 speakers!

Cheers

 

That is definitely the way to go! I heard the SP2500 had a few quality problems, so buy them from Amazon!