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ATI Mobility Radeon HD 4870
The Mobility Radeon HD 4870 was a graphics card by ATI, launched in January 2009. Built on the 55 nm process, and based on the M98 graphics processor, in its M98 XT variant, the card supports DirectX 10.1. The M98 graphics processor is an average sized chip with a die area of 256 mm² and 956 million transistors. It features 800 shading units, 40 texture mapping units and 16 ROPs. ATI has placed 512 MB GDDR3 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 550 MHz, memory is running at 888 MHz.
We recommend the ATI Mobility Radeon HD 4870 for gaming with highest details at resolutions up to, and including, 1280x720.
Its power draw is not exactly known. Mobility Radeon HD 4870 is connected to the rest of the system using a PCIe 2.0 x16 interface.
||Jan 9th, 2009
||PCIe 2.0 x16
1776 MHz effective
Retail boards based on this design