Radeon HD 7720 Game Requirement Analysis
Radeon HD 7720 is a fast-middle-class GFX that's still based on the 40nm, Terascale 2 architecture.
It's based on the Barts LE Core and offers 800 Shader Processing Units, 40 TMUs and 32 ROPs, on a 256-bit memory interface of fast GDDR5. The central unit runs at 840MHz and the memory clock operates at 1050MHz.
Therefore, it's a renamed Radeon HD 6790 and will offer exactly the same performance.
As based on the Barts LE Core, it performs better than Radeon HD 7750 (which goes against the naming) but falls behind Radeon HD 7770. It's expected to consume 150 Watt - more than Radeon HD 7750/Radeon HD 7770 and heat more, due to the higher manufacturing process. As based on the Terascale 2 architecture, it will not have nearly as much driver support as the GCN based GPUs.