Zephyr

The Zephyr motherboard has 3 different versions with minor differences.

Zephyr_A

The Zephyr_A is the successor to the Xenon, and is used in the Original Xbox 360 series. It is the first motherboard to feature HDMI in addition to A/V Multi. It is also notable for its continued use of the original 90nm Y1 GPU.

Notable Differences

• Redesigned and cleaned up board layout
• Removal of the Cypress clock generator (functionality integrated into HANA)
• ANA has been replaced by HANA, which adds HDMI support
• An HDMI port has been added
• Hynix is now one of the RAM vendors
• The layout and specifications of the major filtering capacitors has changed
• All manufacturers now apply glue around the CPU and GPU during manufacturing

Specifications

• 90nm IBM Waternoose2 CPU
• 90nm ATi Y1 GPU with integrated 90nm eDRAM
• 512MB (8x64MB) Samsung, Hynix or Infineon DDR3 RAM
• XSB Southbridge
• HANA
• Nand: Hynix 16MB
• Ethernet: Boardcom or ICS