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AMD Radeon HD 4870 X2 Mobility Graphics Driver

The Mobility Radeon HD X2 was a graphics card by ATI, launched in January Built on the 55 nm process, and based on the M98 graphics processor. Sapphire brings the power of graphics 'supercomputing' to enthusiasts with their SR Radeon HD X2 card. With ( x 2) Stream Processing. Sapphire brings the power of graphics 'supercomputing' to enthusiasts with their SR Radeon HD X2 card. With ( x 2) Stream Processing.


AMD Radeon HD 4870 X2 Mobility Graphics Drivers for Windows Download

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AMD Radeon HD 4870 X2 Mobility Graphics Driver

OpenGL 3. Bandwidth is the maximum amount of data counted in MB per second that can be transported over the external memory interface in a second.

New Driver: AMD Radeon HD 4870 X2 Mobility Graphics

Still, it is unclear if this value represents the chip alone or the whole MXM board including the memory, which we estimate would add about 2x5 Watts. Technically, it is based on the desktop HD and GPUs but with a lower clock rate to save energy.

AMD Radeon HD 4870 X2 Mobility Graphics Update

The high amount of shaders and the bit bus allows the Mobility HD to run every DirectX 9 game in high resolutions and detail settings. While some had thought that the new HD would become the fastest single card solution on the market, the price AMD launched the card at gave indication that the chances were going to be pretty slim.

Fast forward a few months and we've got a new card that sits at around the same price of the GTX The RV retains the R's 4 Quad ROP cluster count, however, they are faster and now have dedicated hardware-based AA resolve in addition to the shader-based resolve of the R architecture. The RV also has 10 texture units, each of which can handle 4 addresses, 16 FP32 samples, and 4 FP32 filtering functions per clock cycle.

This diagram provides confirmation for what we'd suspected: The sideport connection should help improve performance in cases where multi-GPU applications have typically had performance scaling problems, such as when texture synchronization between the GPUs becomes a problem. Whether the sideport connection will be a big help is an open question, though. On top of that, AMD says the bridge chip supports a broadcast write function that can relay data to both of the X2's graphics processors simultaneously, conserving bandwidth.

Another thing we now know about the X2 is its price.

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