VPU Architecture

For the Radeon X800 Pro Crucial used the graphic processor known as R420 and developed by ATI: ATI got this component by the latest low-k manufacturing process at 0.13 micron. This makes their chip to have lower both dimensions and power consumption - compared to competing products - and a single slot cooler system. So you can use the Radeon X800 Pro in compact case computers (like lan gamers do) without any stability problem; besides, as there isn't a big graphic controller cooler you can mount another board in the next PCI slot.

The schema in figure 1 points out the vpu R420 main components in processing and sending data to one or more video otput: the AGP interface ensures the connection with the system (CPU block), whereas a 256 bit bus ensures the connection with the GDDR3 local memories.

The hardware architecture is divided in two subsystems, one for the 2D processing the other for the the 3D processing. The first one includes only a 2D engine block, the second one does some embeddeb blocks (one Video Processing Engine, six Vertex Pipe units, twelve Pixel Pipe, one Setup Engine). Each of them works for the output processing that, as it happens for the 2D processing, is sent to the output devices (CRT/LCD screen or TV) using the Display Interface.

The Hyper Z HD and SmoothVision HD blocks work in 3D processing to optimize the interaction between vpu and local memories and to further process data to have a rendering alike that one you can have using a anti-aliasing filter to produce realistic and immersive virtual environments.

In the next page we give a visual inspection of this Crucial Radeon.

Introduction

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Visual Inspection

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