AMD announced the new ATI Radeon HD 5770 and Radeon HD 5750 graphics cards that support Microsoft’s DirectX 11 technology and ATI Eyefinity multi-monitor support.
The Radeon HD 5770 features a clock speed of 850MHz and 1.2GHz memory clock speed. It offers 1.36TeraFLOPS processoring power, a 850M polygons/sec polygon throughput, 136 billion fetches/sec data fetch rate, and memory bandwidth: 76.8 GB/sec.
On ther other hand, the Radeon HD 5750 has a 700MHz clock speed and 1.15 GHz memory clock speed. It has a processing power of 1.008 TeraFLOPS, 700M polygons/sec polygon throughput and 73.6 GB/sec memory bandwidth.
Both of these Radeon HD video cards utilize GDDR5 memory.