I had some weird experiences with this card at stock too. As other people said, I wouldn't worry about stock 3DMark score because almost every running that will have some kind of OC.
I'm not sure why it won't let you adjust power on this card. Both the Dual and the Dual OC have the same BIOS which should let you set power limit to 105% (use MSI Afterburner, not Palit Thundermaster).
I now have it with a pretty hardcore undervolt (0.75V, 1695 MHz, +500 memory offset, 100% power limit) to keep the fans below 2000 RPM in a SFF case. The highest I could push it was 1905 MHz and +400 memory offset, which needed a 0.875V undervolt and 105% power limit. You are hardcore limited by Palit's power limit (and thermals aren't great either) so undervolt is 100% necessary. I could get it stable at 1920 MHz but it would immediately throttle down to below 1900.
I'm not sure why it won't let you adjust power on this card. Both the Dual and the Dual OC have the same BIOS which should let you set power limit to 105% (use MSI Afterburner, not Palit Thundermaster).
I now have it with a pretty hardcore undervolt (0.75V, 1695 MHz, +500 memory offset, 100% power limit) to keep the fans below 2000 RPM in a SFF case. The highest I could push it was 1905 MHz and +400 memory offset, which needed a 0.875V undervolt and 105% power limit. You are hardcore limited by Palit's power limit (and thermals aren't great either) so undervolt is 100% necessary. I could get it stable at 1920 MHz but it would immediately throttle down to below 1900.