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The ATI Mobility Radeon 4870 is a high-end notebook graphics card right above the Radeon 4850 in specifications.

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The ATI Mobility Radeon 4870 is a high-end notebook graphics card right above the Radeon 4850 in specifications, both cards are specifically designed to provide high definition entertainment support through the use of the high performance Radeon 4800 series GPU and Microsoft DirectX 10 for gaming. The Radeon 4870 is the successor to AMD's earlier Radeon 3870 GPU device and will likely feature similar specifications. AMD claims the Radeon 4800 series GPU units will deliver 4 times the performance of their previous GPUs; and will even consume less power, meaning a longer battery life. In order to keep track of power consumption the 4800 series GPU will take advantage of integrated ATI Powerplay technology. The built-in Microsoft DirectX 10 support means the Radeon 4800 series devices will be fully compatible with Windows Vista, and will also support the Aero graphics interface. AMD quotes that users of the Mobility Radeon 4870 will be able to experience full HD quality content, including HD video editing, Blu-ray media, Picture-in-Picture (PIP) media, High definition photos, and users wil also be able play the most popular and demanding 3D games to date. The Radeon 4850 and 4870 GPU devices also include support for 7.1 channel pass through audio to the integrated HDMI port. The Radeon 4870 notebook graphics cards will feature a 956 MHz core and shader clock, an 800MHz memory clock speed, and a Radeon 4800 series 55nm processor with GDDR3 memory support; due to the reported specs the device will most likely include 512MB onboard memory.

Features
  • ATI Radeon 4800 Series GPU with 55nm processor
  • 4 times the performance of AMDs previous 3000 series GPUS
  • Integrated ATI Powerplay technology for increased battery life
  • Microsoft DirectX 10 support
  • Fully compatible with Windows Vista and the Aero desktop interface
  • Allows users to experience full HD quality content; including HD video editing, Blu-ray media, Picture-in-Picture (PIP) media, High definition photos and up to date 3D gaming
  • 956 MHz core clock; 956 MHz shader clock; 800 MHz memory clock speed
  • 512MB on-board GDDR3 memory
  • Approximated release date: October, 2009
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