Hardware specifications
Central processing unit
The central processing unit (CPU), named Xenon, is a custom IBM triple-core PowerPC-based design.
- 90 nm process, 165 million transistors
- Three symmetrical cores, each one SMT-capable and clocked at 3.2 GHz
- One VMX-128 (IBM´s branding for AltiVec) SIMD unit per core
- 128×128 register file for each VMX unit
- 1 MiB L2 cache (lockable by the GPU)
Graphics processing unit
Xbox 360 GPU, note the smaller eDRAM die to the left of the main Xenos die. Enlarge Xbox 360 GPU, note the smaller eDRAM die to the left of the main Xenos die.
The graphics processing unit (GPU) is a custom ATI R500-based "Xenos"
- 337 million transistors total
- 500 MHz parent GPU (90 nm process, 232 million transistors)
- 500 MHz 10 MB daughter embedded DRAM framebuffer (90 nm process, 105 million transistors)
o NEC designed eDRAM has internal logic for color, alpha blending, Z/stencil buffering, and anti-aliasing.
- 48-way parallel floating-point dynamically-scheduled shader pipelines
o 4 arithmetic logic units per pipe for vertex or pixel shader processing
o Unified shader architecture (This means that each pipeline is capable of running either pixel or vertex shaders.)
o Support for DirectX 9.0 Shader Model 3.0, support for future DirectX 10 shader models
o 2 Shader operations per pipe per cycle
o 96 Shader operations per cycle across the entire shader array
o Shader performance: 48 billion (48,000 million) shader operations per second
- 16 Filtered & 16 unfiltered texture samples per clock
- Maximum polygon performance: 500 million triangles per second
- Pixel fillrate: 16 gigasamples per second fillrate using 4X MSAA
- Dot product operations: 9.6 billion per second theoretical
maximum, 33.6 billion per second theoretical maximum when summed with CPU operations.
Memory
- 512 MiB 700 MHz GDDR3 RAM (Total system memory is shared with the GPU via the unified memory architecture.)
System bandwidth
The system bandwidth comprises:
- 22.4 GB/s memory interface bus bandwidth (700 MHz × 2 accesses per clock cycle (one per edge) on a 128 bit bus)
- 256 GB/s eDRAM internal logic to eDRAM internal memory bandwidth
- 32 GB/s GPU to eDRAM bandwidth (2 GHz × 2 accesses per clock cycle on a 64 bit DDR bus)
- 21.6 GB/s front side bus (aggregated 10.8 GB/s upstream and downstream)
- 1 GB/s southbridge bandwidth (aggregated 500 MB/s upstream and downstream)
Overall System Floating-Point Performance
- 115 GFLOPS theoretical peak performance for CPU
- 1 TFLOPS theoretical peak performance of CPU and GPU combined
Audio
- All games support at least six channel (5.1) Dolby Digital surround sound
- Supports 48 kHz 16-bit audio
- 320 independent decompression channels
- 32 bit processing
- 256+ audio channels
- No voice echo to game players on the same Xbox console; voice goes only to remote consoles
- Voice communication except during games or applications that do not support voice.
- uses XMA codec (advanced audio technology from Microsoft)
Video
- VC-1 at non-HD NTSC and PAL resolutions
- VC-1 or WMV will be used for streaming video
- VC-1 supports DVD quality and high definition quality video
- Bink Video is licensed for games like Project Gotham Racing 3
- additional MPEG2 decoder for DVD video playback
DVD Drive
A 12X DVD-ROM drive, capable of reading DVD+R/RW discs, is part of the console, with game titles shipping on single or dual-layer DVDs. The other supported formats are: CD-DA, CD-ROM, CD-R/RW, WMACD, MP3CD, and JPEG Photo CD.
It was announced that future revisions of the Xbox 360 may include HD DVD drives as part of Microsoft´s partnership with Toshiba. The source of this information is the following statement made by Bill Gates on the 28th of June in Japan:
"The initial shipments of Xbox 360 will be based on today´s DVD format. We are looking at whether future versions of Xbox 360 will incorporate an additional capability of an HD DVD player or something else."
However, as confirmed by Yoshihiro Maruyama, Japan´s chief of Xbox operations, Microsoft will never release games in a format other than DVD.
Xbox 360 games are limited to the 8.5GB of storage available on a dual-layer DVD. This storage space limitation is a concern to developers, and some games made for the system may span multiple discs. The Nintendo Revolution will use a similar size of disc while the PlayStation 3 will use a 25GB or 50GB Blu-Ray Disc.
Physical characteristics
Sides of Console
- Weight 3.5 kg (7.7 lb)
- 309 x 83 x 258 mm (12.15 x 3.27 x 10.15 in)
Note: this Wikipedia article is licensed under the GNU Free Documentation License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Que la 360 gère ou pas DX10 ça revient au même, une console n´est pas limité par ce genre de chose (la PS2 arrive à faire certain effet DX9 
)