The card has 896 stream processors, 56 TMUs, 16 ROPs, a 128-bit memory bus, 1GB GDDR5 memory clocked at 6000MHz and a 1GHz core clockspeed. It also introduces dynamic clock adjustment technology for reducing power consumption.
A quick look at The Tech Report's review shows the Radeon HD 7790 more than holds its own overall. In real-world performance the card is quicker than the GeForce GTX 650 Ti, while also outdoing the Radeon HD 7850 1GB in many tests.
Add to that the Radeon HD 7790's power efficiency, its low noise levels, and the free copy of BioShock Infinite in the box, and it looks like we have a winning recipe from AMD.