I'm using the hardware in my specs. I installed the board and everything worked fine, but after installing the 177.41 drivers SLI wasn't an option in the NVCP anymore. I downgraded to the 177.35 drivers and still had no luck. I reset my bios and made sure that SLI was enabled, and it is. I reformat five or six times now and I still can't get SLI to work, not even in the 175.26 drivers. Both cards show up in GPU-Z by the way. I really don't know what to do now. Can anybody help?