SiS sta cercando di trovare spazio nel settore del mercato delle video card riservato ai prodotti dal prezzo contenuto e dall'ottimo rapporto qualità su prezzo con la nuova famiglia di gpu nota come Xabre.





In quest'ottica possiamo tranquillamente dire che quanto promesso dal costruttore in merito alle qualità dello Xabre è stato mantenuto, a giudicare dai risultati dei test pubblicati sull'autorevole xbitlabs.com.

Specifiche

Key specifications of the new Xabre GPU:

0.15micron manufacturing technology;
Up to 300MHz working frequency;
4 pixel pipelines with 2 TMUs on each;
Lays up to 4 textures per pass, up to 2 textures per clock;
Supports Emboss, EMBM, Dot3 mapping techniques;
Supports cubic maps and volumetric textures;
S3TC/DXTC texture compression;
Full-Scene Anti-Aliasing via supersampling for 2 and 4 subpixels (2x and 4x);
Supports Pixel Shaders ver. 1.3 (DirectX 8.1);
Third generation T&L VLIW unit;
Supports up to 128MB of SDRAM/DDR SDRAM graphics memory with 64bit or 128bit bus width;
AGP 1x, 2x, 4x and 8x (AGP 3.0);
AGP type auto-detect (AGP 1.0, 2.0 or 3.0).
2D part:

Hardware DirectDraw and GDI 2000;
Overlays, scaling and gamma correction;
Motion Compensation and de-interlacing support;
375MHz built-in RAMDAC;
Supports resolutions up to 2048x1536 pixels;
Supports SiS301 companion-chip implementing the following functions:
Implements TV-Out in PAL, NTSC and HDTV formats;
Supports digital monitors;
Allows multi-monitor configurations: LCD+CRT, CRT+CRT, CRT+TV;
Supports red-blue stereoscopic glasses and regular stereoscopic glasses.

Features

8X8 - AGP 8x and DirectX 8 support. Of course, 8x mode will start working on AGP only when the new mainboards supporting AGP 3.0 standard appear.
Pixelizer Engine - Pixel Shader unit complying with DirectX 8.1 specification. The specs claim that its functionality is not in the least worse than that of the NVIDIA GeForce4 Pixel Shader.
Frictionless Memory Control (FMC) - this architecture is intended to help the graphics core use the available graphics memory bandwidth more efficiently. It includes caches for textures, vertexes, pixels, Z-buffer. It optimizes Z-Buffer operation (quick clear, pixel visibility test before texturing).
Jitter-Free Anti-Aliasing - supports anti-aliasing via 2x and 4x supersampling, simple image "blurring" and the combination of these methods.
Coloredeemer Technology - Colours adjustment for the desktop and overlay.
MotionFixing Video processor - pixel de-interlacing and motion compensation during video playback.
3rd Generation T&L Engine - non-programmable polygon transformation and lighting unit, which supports up to 16 vertex cache.
Double Scene Technology - supports multi-monitor configurations LCD+CRT, CRT+CRT, CRT+TV. Allows displaying the copy on the second monitor and expanding the desktop. Supports free shifting between the primary and secondary displays.

Schema a blocchi



Le performance di questo processore grafico sono state analizzate su xbitlabs.