Today AMD launches their new Radeon HD 4850 and 4870 Series. Both cards are built around the new RV770 graphics processor. The GPU comes with a largely increased number of shaders: 800 vs. 320 on the previous generation. Another new feature is support for GDDR5 which will be included in the Radeon HD 4870 only, not in the 4850. The HD 4870 has lower memory clocks because it uses GDDR5 which offers twice the bandwidth clock-to-clock when compared to GDDR3.
AMD is determined to claim price/performance leadership in the $199 and $299 segments, that’s where those cards are positioned. A R700 card called HD 4870 X2 will appear later this year and is supposed to fight for the performance crown.
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