Looking down from dragonreach steps.
Went from 19fps upto 24/25fps. (measured using dxtory)
Phenom II X6 1055T (Hexcore, 2.8GHz), Radeon HD 5870, 8GB, Win7 x64, 1920x1080 on a single monitor (3x eyefinity in Skyrim is useless

).
All settings ultra except Antialiasing (off) and Shadows (medium), FXAA is off too.
ipresentinterval is set to 0; fps is capped at 60 using dxtory.
In the short term I hope Beth sort out their compiler settings so we can have the entire binary optimised; no doubt we'd see further gains if this were done.(though perhaps not so dramatic)
Longer term I'd like to see them rewrite the whole damn engine so it uses more than 1.4 cores - but that's probably quite unlikely.