"this driver introduces multi-frame sampled anti-aliasing (MFAA), which can be enabled across GeForce GTX 600, GTX 700, and GTX 900 series graphics cards."
This is not true, MFAA is only available on GTX 9xx series cards.
What are the actual differences between this and the Essence One? I have the STX and always wanted the One but was put off by the price and apparently dodgy driver support. I would however jump at getting rid of the dirty molex connection to the STX, so this would be ideal.
Whether a Gigabyte or an Asus board, all unlocked Sandy and Ivy Bridge overclock through their turbo, no matter how you set it in the BIOS. Only difference is if you do it by per core you can select values (e.g. 45 for 1 core load, 42 for 4 core load etc).
If your voltage isn't dropping down...