Here are the Specs
Custom IBM PowerPC-based CPU:
# 3 symmetrical cores running at 3.2 GHz each
# 2 hardware threads per core; 6 hardware threads total
# 1 VMX-128 vector unit per core; 3 total
# 128 VMX-128 registers per hardware thread
# 3 symmetrical cores running at 3.2 GHz each
# 1 MB L2 cache
CPU Game Math Performance:
# 9 billion dot product operations per second
Custom ATI Graphics Processor:
# 500 MHz
# 10 MB embedded DRAM
# 48-way parallel floating-point dynamically-scheduled shader pipelines
# Unified shader architecture
Polygon Performance:
# 500 million triangles per second
Pixel Fill Rate:
# 16 gigasamples per second fillrate using 4X MSAA
Shader Performance:
# 48 billion shader operations per second
Memory:
# 512 MB GDDR3 RAM
# 700 MHz DDR
# Unified memory architecture
Memory Bandwidth:
# 22.4 GB/s memory interface bus bandwidth
# 256 GB/s memory bandwidth to EDRAM
# 21.6 GB/s front-side bus
Overall System Floating-Point Performance:
# 1 TFLOP
Storage:
# Detachable and upgradeable 20 GB hard drive
# 12X dual-layer DVD-ROM
# Memory unit support starting at 64 MB
I/O:
# Support for up to 4 wireless game controllers
# 3 USB 2.0 ports
# 2 memory unit slots
Optimized for Online:
# Instant, out-of-the-box access to Xbox Live features, including Xbox Live Marketplace for downloadable content, Gamer Profile for digital identity and voice chat to talk to friends while playing games, watching movies or listening to music
# Built in Ethernet Port
# Wi-Fi Ready: 802.11 A, B and G
# Video Camera Ready
Digital Media Support:
# Support for DVD-Video, DVD-ROM, DVD-R/RW, DVD+R/RW, CD-DA, CD-ROM, CD-R, CD-RW, WMA CD, MP3 CD, JPEG Photo CD
# Stream media from portable music devices, digital cameras, Windows XP PCs
# Rip music to Xbox 360 hard drive
# Custom playlists in every game
# Windows Media Center Extender built in
# Interactive, full screen 3D visualizers
HD Game Support:
# All games supported at 16:9, 720p and 1080i, anti-aliasing
# Standard definition and high definition video output supported
System Orientation:
# Stands vertically or horizontally
Customizable Face Plates:
# Interchangeable to personalize the console
More Information here
