Overclocking
It's already fast, right? But increasing the frequencies further enabled us to push the sample card to 1,230MHz core and 7,000MHz memory. The core frequency, in particular, is decent, but it has been surpassed by the company's own HD 7970 TOXIC 6GB.
What does this mean with respect to overclocked performance?
Well, you're getting GeForce GTX 780-like performance for a lot less money.