Do I need to upgrade my RAM, if I upgrade to SLI?

So I recently went online and purchased a second GTX 770 to SLI with my first. I have everything looked after, PSU, SLI bridge, motherboard support, I just want a little extra kick in performance but I don't have the type of money to go and buy a brand new 970 or 390.

The problem is that I recently was reading a comparison of 770 SLI scaling and 680 SLI scaling, and at the bottom it recommended that I have 12gb of RAM if I have SLI 770s. I only have 8gb, so does this mean I'm going to run into issues if I SLI? or is the 12gb just so that RAM doesn't bottle neck my performance? Like why would it recommend 12gb of RAM, I never considered it would have any impact on the performance of SLI game.

8gb of ram will suffice. Even if you take the sli situation out of the equation, if you see that your use case for whatever scenario eats up most of your ram then it would be a good idea to grab another stick of it. Just use a system monitor (built in windows one for example).

Cool thanks, I was just worried that perhaps SLI uses the RAM to maybe store frames or something... I don't know, but that it would rely on having extra RAM so maybe that's why they recommended more RAM. But if it's not connected to the performance of SLI, then I had nothing to worry about.

Again, thanks!