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Part NumberX812320
IntroducedLate 2007
Used InXbox 360 (Original)
CPU TypeLoki
GPU TypeRhea
CPU Process65nm
GPU Process90nm
eDRAM Process90nm
Nand Size16MB (Retail)
64MB (Dev)
Video OutputsA/V and HDMI
12V Amperage14.2A

Falcon is the successor to the Zephyr_C motherboard and is used in the Original Xbox 360 series.

Notable Differences

  • The Waternoose CPU has been replaced with the Loki CPU
  • Around March 2008, fixed GPUs started being used in some units, but was not universally used until roughly June/July 2008
  • When the revised GPUs started rolling out, almost all boards started using Qimonda HYB18H1G321AF-14 RAM in a 4x128MB config
  • Qimonda HYB18H512322AF-13 RAM has been replaced with Qimonda HYB18H512321BF-14
  • When the revised GPUs rolled out, Hynix HY5RS123235BFP-14 and Qimonda HYB18H512321BF-13 RAM are no longer used
  • The V_CPUCORE voltage regulation is now 2 phases, down from 3 phases, but the pads and silkscreen for the third phase still remain
  • The V_CPUVCS rail was added for the Loki CPU, as VCS is no longer on silicon
  • The board layout has been modified to support the Loki CPU
  • The J7G3 Titan connector on the front of the motherboard was left on the final motherboard
  • Some later boards use solid state capacitors for the CPU and GPU output filters
  • The heatpipe CPU heatsink was replaced with the aluminum CPU heatsink, however some early systems did not have this change



Falcon that has been converted to an Opus

The Opus name describes a project of fitting a Falcon board into the casings for a Xenon. This was done with a custom A/V port and the removal of the HDMI port. Opus was used for refurbishing defective consoles until the Elpis boards started being produced.

Notable Differences

  • Removal of the HDMI port
  • Custom A/V port to fit the HDMI board layout while being able to fit into the Xenon casing
  • All Opus boards use revised versions of the Rhea GPU with higher Tg underfill
  • All Opus boards use 4x128MB Qimonda HYB18H1G321AF-14 RAM