Zephyr

Zephyr

Zephyr_A
Zephyr_C
Part Number	X810385 (A) X810387 (B/C)
Introduced	Late 2006 (A) Early 2007 (B) Mid 2007 (C)
Used In	Xbox 360 (Original)
CPU Type	Waternoose
GPU Type	Y1 (A) Y2 (B) Rhea (C)
CPU Process	90nm
GPU Process	90nm (A) 80nm (B/C)
eDRAM Process	90nm (A/B) 80nm (C)
Nand Size	16MB (Retail) 64MB (Dev)
Video Outputs	A/V and HDMI
Wattage	203W
12V Amperage	16.5A
Predecessor	Xenon
Successor	Falcon

The Zephyr motherboard has 3 different versions with very minor differences.

Zephyr_A

Zephyr_A is the successor to Xenon and is used in the Original Xbox 360 series. It is the first motherboard to feature HDMI.

Notable Differences

• Redesigned and cleaned up board layout
• Hynix HY5RS123235BFP-14 RAM was added as an option
• Samsung K4J52324QC-BC14 RAM has been replaced with Samsung K4J52324QE-BC14
• Infineon HYB18H512321AF-13 RAM has been rebranded and replaced with Qimonda HYB18H512322AF-13
• ANA has been replaced with HANA, which adds HDMI support
• The Cypress clock generator has been removed, and its functionality has been integrated into the HANA
• An HDMI port has been added
• The layout and specifications of the major filtering capacitors has changed
• All manufacturers now apply glue around the CPU and GPU

Zephyr_B

Zephyr_B is the successor to Zephyr_A and is used in the Original Xbox 360 series.

Notable Differences

• The 90nm Y1 GPU has been replaced with the 80nm Y2 GPU
• The PCIe pads under the GPU have been de-swizzled in order to support the Y2 GPU
• The extended GPU heatsink is always used, in place of the low profile GPU heatsink

Zephyr_C

Zephyr_C is the successor to Zephyr_B and is used in the Original Xbox 360 series. The part number is the same as Zephyr_B, as the PCB itself did not change.

Notable Differences

• The 80nm Y2 GPU has been replaced with the 80nm Rhea GPU, which shrinks the eDRAM to 80nm

Common

Specifications

• 90nm IBM Waternoose DD3 CPU
• GPU
  • 90nm ATi Y1 GPU with integrated 90nm NEC eDRAM (Zephyr_A)
  • 80nm ATi Y2 GPU with integrated 90nm NEC eDRAM (Zephyr_B)
  • 80nm ATi Rhea GPU with integrated 80nm NEC eDRAM (Zephyr_C)
• 512MB GDDR3 RAM
  • 8x64MB Hynix HY5RS123235BFP-14
  • 8x64MB Qimonda HYB18H512322AF-13
  • 8x64MB Samsung K4J52324QE-BC14
• XSB R0 Southbridge
• HANA
• Nand
  • 16MB Hynix HY27US08281A (Retail)
  • 64MB Samsung K9F1208U0B (Dev)
• Boardcom or ICS Ethernet PHY
• Heatpipe CPU Heatsink
• GPU Heatsink
  • Low Profile (Zephyr_A)
  • Extended (Zephyr_B/C)