ATI AMD Radeon HD 6670 Slow

[Turchx]

Hello, I've had an ATI AMD Radeon HD 6670 2 GB DDR3 for some months now and I've been unable to run Borderlands on even Medium settings with my current setup. I've seen someone with a Sapphire AMD Radeon HD 6670 1 GB who runs the game smoothly as anything. I have an XPS 8300 with 16 GB of RAM, does anyone think they can get to the bottom of this issue? My Graphics driver is updated (Catalyst).

 

[fantastik250]

What specs does the person have with the sapphire 6670?

And what is your specs to compare.