Designed to take the place of Radeon HD 4830, Radeon HD 4770 also features 640 stream processors. But the memory interface has been slashed from 256bit to 128bit. However, AMD will ship it with high-speed GDDR5 memory, and core/memory clock of 750/800MHz, which makes it equally efficient as 3.2GHz DDR. Radeon HD 4770 will come with 826 million transistors, which means 130 million ones less than 956 million on Radeon HD 4830. Thanks to the 40nm manufacturing process, the power consumption has been reduced to 80W.
AMD Radeon HD 4770 is slated to launch on May 4th, and the price tag would be $99.
http://en.expreview.com/2009/03/31/a...html#more-2910
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