My two cents on SLI is its value is relative. IF you have a high level of tech skills, and you want to game at high resolutions(3440x1440 or up) then it can be worth it. However, to effectively use all that power requires a lot of tweaking. Usually game by game. Some games will never work with Sli correctly. However, when it does work it is amazing. If your the type that enjoys doing performance tweaks then it is absolutely worth the money. You will need to understand how to use NV inspector and various other tweaking softwares. Overall if you have to ask, its more likely then not that your not an enthusiast who spends their time on this stuff, so it most likely is not for you. However, don't believe the people who run around saying Sli is dead. It's not. It's great if you can take advantage of it properly.