ATI Radeon 4800 Specs Leaked

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According to a report by Tom’s Hardware, ATI will release its Radeon 4800 series graphics cards next month including the 4850, 4870, and 4870X2. The introduction of the Radeon HD 4000 series graphics cards will put ATI back on track with its traditional six month refresh cycle.

The Radeon 4800 series is based on the RV770 graphics core and has the following specifications:

  • 480 Stream processors
  • 32 Texture units
  • 16 ROPs
  • 256-bit memory bus
  • GDDR3/4/5 memory support
  • 800+ million transistors

Compared to the current RV670 core, the RV7700 has over 136 million more transistors and double the texture units. The top-end 4870X2 will have 2GB of GDDR5 memory running at 1.73GHz. The 4850 will be offered in 256MB GDDR3 and 512MB GDDR3/5 versions with memory speeds of 1.14GHz (GDDR3) and 1.73GHz (GDDR5), and the 4870 will have 1GB of GDDR5 at 1.94GHz. The uneven memory clocks have to do with a move toward power efficiency; the 4800 series is designed to consume less than 150W. GDDR5 memory is 34.5% less power hungry than GDDR3. 

The Radeon 4850 256MB GDDR3 is the successor of the HD 3850 256MB, and will retail for less than $200. The 4850 512MB GDDR3 will retail for a bit more at $229, and the 512MB GDDR5 version between $249 – 269. The fastest single-GPU card, the 4870 1GB GDDR5, will retail for $329 – 349. Finally, the flagship 4870X2 will be $499. The launch is expected to be only weeks away.

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