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The Parhelia was the first GPU by Matrox to be equipped with a bit memory bus, giving it an advantage over other cards of the time in the area of memory bandwidth. In other projects Wikimedia Commons. Originally, Matrox planned to produce the “Parhelia 2” successor, codenamed “Pitou”.
Some writers believed Parhelia to have a “crippled” triangle-setup engine that starved the rest of the chip in typical 3D rendering tasks .
Despite the lackluster performance for its price, Matrox hoped to win over enthusiasts with the Parhelia’s unique and high quality features, such as “Surround Gaming”, glyph acceleration, high resolutions, and 16x fragment anti-aliasing. While the Parhelia possessed an impressive raw memory bandwidth much of it was wasted on invisible house-keeping tasks because the card lacked the ability to predict overdraw or compress z-buffer data, among other inefficiencies.
However, ATI’s Radeon was released later that year, with a considerably larger transistor count million vs. However, it was all a bit of a moot point because Parhelia’s performance was not adequate to drive most DirectX 9-supporting titles well even without more complex shader code weighing the card down.
Matrox Parhelia APVe
Dual link TMDS is supported via external controller connected to the digital interface. This, unfortunately, proved not to be an efficient arrangement in most situations. The frame buffer is in RGBA Unlike previous parheloa, it supports Windows Vista Aero acceleration. In JuneMatrox announced the release of M-Series video cards.
Matrox Graphics – Products – Legacy Products – Parhelia Series – Parhelia PCI MB
After the launch of Parhelia, Matrox released Parhelia-LXwhich supports only bit memory and has only 2 pixel pipelines. Retrieved from ” https: It remained a niche product, while nVidia and ATI control the majority of the discrete graphics chip market.
As had happened with previous Matrox products, the Parhelia was released just before competing companies released cards that completely outperformed it.
The Parhelia remained a niche product, and was Matrox’s last major effort to sell into the matroz market. Presumably there were several bugs within the Parhelia core that could not be worked around in the drivers. Later in Parhelia’s life, when DirectX 9 applications were becoming quite prevalent, Matrox acknowledged that the vertex shaders were not Shader Model 2.
In this case it was the ATI Radeonreleased only a few months pfi.
The “” suffix refers to the bit ring bus. From Wikipedia, the free encyclopedia.
Matrox Parhelia HR256
However, within a few months after release, the Parhelia was completely overshadowed by ATI ‘s far faster and fully DirectX 9. For example, in a flight simulator or sim racingthe middle monitor could show the windshield while the left and right monitors could display the side views offering peripheral vision.
The Parhelia was only competitive with the older Radeon and GeForce 3which typically cost half as much.
The Parhelia processor featured Glyph acceleration, where anti-aliasing of text was accelerated by the hardware.
Matrox Parhelia mb Pci-x PCI Video Graphics Card MGI Ph-ppdif | eBay
However, only 2 displays can be controlled independently. The “Surround Gaming” support allowed the card to drive three monitors creating a unique level gaming immersion. This page was last edited on 1 Augustat To further improve analog image quality, 5th order low-pass filters are used.
The Parhelia series was Matrox ‘s attempt to return to the market after a long hiatus, their first significant effort since the G and G lines had become uncompetitive.