Just read some reviews of Asus Matrix and see how much faster it is after OC then stock 7970GE.
Here is a review showing @ 7970 @ 1275/1885 -It's a nice improvement. But still don't think it's in Titan Territory.
http://www.techpowerup.com/reviews/Sapphire/HD_7970_Toxic_6_GB/31.html