I haven't been able to enable sli mode with this gpu, my vram matches so there shouldn't be an issue. either the sli strip is bad or the card is bad. Even though the card shows up on my mobo and system i still cant get an sli.
Very powerful card with dual bios configuration for overclockers out there. It plays a lot of current game at high settings. I never did any mods to it myself. It's a quiet card!