Overclock the GPU and disable energy saving features on the CPU, with your rig you should be very high up the rankings for this GPU! Also there are much better drivers for that GPU than the latest ones, might be worth installing some older ones for the best results

Cheers mate - just getting to grips with this beast of a GPU

Take it gently with her, don't want to push too much with her in case you use up all the AMPs on your 12V rail I think the biggest problem is actually the OS you're running on along with the driver you're using. If you used XP and an earlier driver like the 91.47 driver Finally are there any voltage options with MSI afterburner at all??? Thinking that is quite a low overclock for the GPU. But I do of course realize your just getting to grips with the GPU and I wouldn't want to push you. Just offering a tip