Fillrate and shading
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Let's take a look at the cards' basic vital statistics.
| Card | ASUS EN6800 Ultra | ATI RADEON X850 XT PE | ATI RADEON X850 XT |
| Interface/speed | PCI-Express | PCI-Express | PCI-Express |
Onboard memory | 256MB | 256MB | 256MB | Core speed | 425MHz | 540MHz | 520MHz | Rendering pipelines | 16 | 16 | 16 | Fillrate (multi-texturing) | 6.8GTexels/s | 8.64GTexels/s | 8.32GTexels/s | Memory interface | 256-bit | 256-bit | 256-bit | Memory speed | 1100MHz | 1180MHz | 1080MHz | Memory bandwidth (max) | 35.2GB/s | 37.76GB/s | 34.56GB/s | | | | |
Looking now at how theoretical figures match up with 3DMark05's fillrate and shading tests.
Decent single-texturing performance is offset by relatively low multi-texturing, thanks to the RADEONs' faster core speeds. It's all big numbers here, folks.
Pixel shading runs mighty smooth on these top-end cards, as you can see.
Vertex shading, both simple and complex, is ATI's domain.
ASUS Serious About Dual-GPU Graphics Cards (2005-05-13)