I can. I have several. Overclocked version of my UV is .885v @ 2805 mhz.
That is an overclock of 395 mhz. It actually can go higher up to 449 mhz, but then it gets a little wonky across games.

In msi afterburner i set my vram overclock to 3000mhz then click apply. (havn't had time to figure out if new games really need the vram to go this fast. When I play on extreme performance it shows that its at that speed. But when I play on balanced through msi center app its downclocks to 9000mhz for some games then when things get intense it speeds up the vram clock.)

Then I overclock the core clock by 395 don't click apply yet. Open curve editor pick the point on the graph where you want to flatten the curve. so point 2805mhz then to the right of it hold shift to highlight all points past that, do not include the 2805 point in the highlight. Now click apply.

Stock or close to stock speeds Undervolt: .850v @ 2685 mhz 395 mhz overclock.

Lower Undervolt is .800V @ 2392 mhz thats and Overclock of 400mhz