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Xbox technical specifications

The Xbox technical specifications describe the various components of the Xbox video game console.

Central processing unit

Memory

  • Shared graphics memory sub-system
  • 64 MB DDR SDRAM at 200 MHz; in dual-channel 128-bit configuration giving 6400 MB/s (6.4 GB/s)
  • Maximum of 1.06 GB/s bandwidth accessible by CPU FSB
  • Theoretical 5.34 GB/s bandwidth shared by rest of the system
  • Supplied by Hynix or Samsung depending on manufacture date and location

Graphics processing unit

  • GPU and system chipset: 233 MHz "NV2A" ASIC. Co-developed by Microsoft and Nvidia and essentially a variant of Geforce 3 chips.
  • Geometry engine: 115 million vertices per second, 125 million particles per second (peak)
  • 4 pixel pipelines with 2 texture units each
  • Peak fillrate:
  • Rendering fillrate: 932 megapixels per second (233 MHz × 4 pipelines)
  • Texture fillrate: 1,864 megatexels per second (932 MP × 2 texture units)
  • Realistic fillrate:
  • Rendering fillrate: 250–700 megapixels per second, with Z-buffering, fogging, alpha blending and texture mapping
  • Texture fillrate: 500–1400 megatexels per second (250-700 MP × 2 texture units)
  • Peak triangle performance: 29,125,000 32-pixel triangles per second, raw or with 2 textures and lighting (32-pixel divided from peak fillrate)
  • 485,416 triangles per frame at 60 frames per second
  • 970,833 triangles per frame at 30 frames per second
  • Realistic triangle performance: 7,812,500–21,875,000 32-pixel triangles per second, with 2 textures, lighting, Z-buffering, fogging and alpha blending (32-pixel divided from realistic fillrate)
  • 130,208–364,583 triangles per frame at 60 frames per second
  • 260,416–729,166 triangles per frame at 30 frames per second
  • 4 textures per pass, texture compression, full scene anti-aliasing (NV Quincunx, supersampling, multisampling)
  • Bilinear, trilinear, and anisotropic texture filtering
  • Performance lies between a Geforce 3 Series GPU and a Geforce 4 Series GPU. This is due to the added vertex shader present on the ASIC, thus doubling the vertex output compared to Geforce 3 ASICs. Clock speed is the same as the original Geforce 3 series GPU (233MHz) thus slower than Geforce 4 series starting at 250MHz.

Storage

  • Storage media
  • 2×–5× (2.6 MB/s–6.6 MB/s) CAV DVD-ROM
  • 8 or 10 GB, 3.5 in, 5,400 RPM hard disk formatted to 8 GB with FATX file system
  • Optional 8 MB memory card for saved game file transfer

Audio

Connectivity

Physical specifications

  • Weight: 3.86 kg (8.5 lb)
  • Dimensions: 320 ÃƒÂ— 100 ÃƒÂ— 260 mm (12.5 ÃƒÂ— 4 ÃƒÂ— 10.5 in)

See also

References