I just got myself a second MSI GTX 670 today and tried putting them into SLI and when I go to enable SLI under the Nvidia control panel there is no option to do so.
OS: Windows 8.1 64 bit
Motherboard: ASUS M5A99FX PRO R2.0
Graphics: MSI GTX N670 (x2)
PSU: OCZ 750 Watt
From what I can tell the two cards work perfectly when alone, I have tried each seperately. When the two are in at the same time with the SLI bridge both will spin up the fans and the lights will turn on, though when I go to enable SLI there is no option to do so and the second card does not seem to be recognized by the computer, Nvidia control panel or CPU-Z
OS: Windows 8.1 64 bit
Motherboard: ASUS M5A99FX PRO R2.0
Graphics: MSI GTX N670 (x2)
PSU: OCZ 750 Watt
From what I can tell the two cards work perfectly when alone, I have tried each seperately. When the two are in at the same time with the SLI bridge both will spin up the fans and the lights will turn on, though when I go to enable SLI there is no option to do so and the second card does not seem to be recognized by the computer, Nvidia control panel or CPU-Z