Xabre
SiS will be bringing the Xabre chip to market in several different flavors, the first of which will be the Xabre400, which will also be the fastest version for the time being. Two more versions, the 200 and 80, will be introduced later as less expensive alternatives. While the two bigger versions will differ only in clockspeed, the small 80 version will lack an AGP 8x interface and be limited to using either simple 128 bit SDRAM or 64 bit DDR-RAM. That clearly makes this version a perfect choice for system integrators and the low-cost OEM market. Here's an overview of the chips:
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| Header Cell - Column 0 | NVIDIA GeForce4 Ti4200 | NVIDIA GeForce4 MX460 | ATI Radeon 8500 | ATI Radeon 9000 Pro | SiS Xabre400 |
|---|---|---|---|---|---|
| Chip Technology | 256 bit | 256 bit | 256 bit | 256 bit | 256 bit |
| Process | 0.15 Micron | 0.15 Micron | 0.15 Micron | 0.15 Micron | 0.15 Micron |
| Transistors | 63 Mio | - | 60 Mio | - | - |
| Memory Bus | 128 bit DDR | 128 bit DDR | 128 bit DDR | 128 bit DDR | 128 bit DDR |
| Memory Bandwidth | 8,2 GB/s | 8,8 GB/s | 8,8 GB/s | 8,8 GB/s | 8,2 GB/s |
| AGP Bus | 1x/2x/4x | 1x/2x/4x | 1x/2x/4x | 1x/2x/4x/8x | 1x/2x/4x/8x |
| Memory | 64/128 MB | 128 MB | 64/128 MB | 64/128 MB | 64 MB |
| GPU Clock | 250 MHz | 300 MHz | 275 MHz | 275 MHz | 250 MHz |
| Memory Clock | (514) MHz 64 MB(444) MHz 128 MB | 275 (550) | MHz 275 (550) | MHz 275 (550) | MHz 250 (500) MHz |
| Memory | SD/BGA 3,3-4ns | BGA 3,3ns | SD/BGA 3,3ns | SD | SD 3,3-4ns |
| Vertex Shader | 2 | - | 2 | 2 | - |
| Pixel Pipelines | 4 | 2 | 4 | 4 | 4 |
| Texture Units Per Pipe | 2 | 2 | 2 | 1 | 2 |
| Textures per Texture Unit | 4 | 4 | 3 | 6 | 4 |
| Vertex S. Version | 1.1 | - | 1.1 | 1.1 | 1.1 |
| Pixel S. Version | 1.3 | - | 1.4 | 1.4 | 1.3 |
| DirectX Generation | 8 | 7.1 | 8.1 | 8.1 | 8.1 |
| FSAA Modi | Multi Sampling | Multi Sampling | Super Sampling | Super Sampling | Super Sampling |
| Memory Optmizations | LMA II | LMA II | Hyper Z II | Hyper Z II | Not Specified |
| Display Outputs | 2 | 2 | 2 | 2 | 2 |
| Chip Internal Ramdacs | 2 x 400 MHz | 2 x 400 MHz | 2 x 400 MHz | 2 x 400 MHz | 1 x 400 MHz, 1x 160 MHz |
| Chip External Ramdacs | - | - | - | - | SiS 301B |
| Bits per Color Channel | 8 | 8 | 8 | 8 | 8 |
| Special | - | TV Encoder On-Chip | - | TV Encoder On-Chip; FullStream | Row 23 - Cell 5 |
| Estimated Price | ~ $179 | $149 | $179 | $149 | $149 |
