Just got delivered today:
Bought from newegg, the box was shrinkwrapped, in case anyone was wondering.
Stock Volts are 0.962V @ 2D mode, 1.082V @ 3D mode.
I bumped the core clock from 797Mhz to 900Mhz and stress tested it using EVGA OC scanner and Unigine Heaven for 10 mins each, no artifacts. Havent tried anything past 900 yet, but will soon!
EDIT: Getting shader artifacts extremely rarely at 900Mhz, set the core clock back a bit to 890Mhz, now theres 0 artifacting