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Matrox rolls out 512-bit GPU

Posted: 23 May 2002 ?? ?Print Version ?Bookmark and Share

Keywords:parhelia 512? gpu? graphics processor unit? graphics chip? dualhead highfidelity?

Matrox Graphics Inc. has unveiled what it claims to be world's first 512-bit GPU that is capable of displaying over 1 billion colors to support high fidelity 2D and 3D image rendering, as well as PC DVD playback with an image quality similar to DVD STBs.

Manufactured using a 0.155m process, the Parhelia-512 integrates 80 million transistors and has a 256-bit DDR memory interface that provides >20GBps of raw memory bandwidth. The AGP device also supports unified frame buffers up to 256MB in size and integrates two 400MHz RAMDACs, a TV encoder and support for dual TMDS transmitters.

The GPU features the company's DualHead-HighFidelity technology that enables the Parhelia-512 to display dual 2,048x1,536 (32bpp) analog outputs or dual 1,920x1,200 (32bpp) digital outputs with independently gamma-correctable hardware overlays.

The device also features 10-bit GigaColor Technology that maintains full 10-bit precision per color channel throughout the pixel processing pipeline, inside the frame buffers, as well as in the RAMDACs and TV encoder.

It also integrates texture filtering units allowing for the dynamic allocation of up to 64 texture samples per clockdouble the number available on competing GPUs and provides hardware-accelerated antialiased text and font rendering with full gamma correction.

The Parhelia-512 also has four Microsoft DirectX 9-compatible vertex shader units and enables single-pass quad texturing with four pixel-per-clock throughput.

Hardware displacement mapping is also included to render complex 3D geometry using simple data representation. The process works by encoding high-resolution geometric detail into 'displacement maps', which represent height displacements from a low-resolution object mesh, and stores this data in simple texture maps.

Using dynamic, depth-adaptive vertex tessellation and mip-mapped vertex texture sampling, Parhelia-512 recombines the base mesh with the displacement map in real time to enable stunningly realistic 3D rendered scenes.

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