XBOX 360 Hardware specifications
This article will cover XBOX 360's CPU, Graphic processor,
Memory, System Bandwidth, Audio & Video capabilities, Optical
drive and Physical characteristics. For more information visit
http://www.justxbox.com.
Central processing unit
Custom IBM PowerPC-based "Xenon"
90 nm process, 165 million transistors
Three symmetrical cores, each one running at 3.2 GHz
Two hardware threads per core; six total
One VMX-128 vector unit per core; three total
128 VMX-128 registers per hardware thread
1 MiB L2 cache (lockable by the GPU)
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Graphics processing unit
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)
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
4 arithmetic logic units per pipe for vertex or pixel shader
processing
Unified shader architecture (This means that each pipeline is
capable of running either pixel or vertex shaders.)
Support for DirectX 9.0 Shader Model 3.0, limited support for
future DirectX 10 shader models
2 Shader operations per pipe per cycle
96 Shader operations per cycle across the entire shader array
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.
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Memory
512 MiB 700 MHz GDDR3 RAM (Total system memory is shared with
the GPU via the unified memory architecture.)
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SYSTEM BANDWIDTH
22.4 GB/s memory interface bus bandwidth (700 MHz