Recently AMD Radeon HD 7770, which is also the cheapest AMD graphics card based on the 28nm GCN architecture, has been leaked over the net.
HD 7770 is based on Cape Verde core, its overall design is similar to that of HD 7900. However, the cooling solution is just like NVIDIA’s middle-end graphics. The length of it is 21cm, which is the same with GTX 460, but longer than HD 5770/HD 6770.
The graphics card features one DVI connector, which can be good for the compatibility of third-party cooler. Thanks to the 28nm manufacturing process, its die seems to be only 150 mm², while that of Juniper XT is about 166 mm².