Tonasket

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Tonasket/Jasper_B
X820379-001.jpg
Part NumberX820379
IntroducedLate 2009
Used InXbox 360 (Original)
CPU TypeLoki
GPU TypeKronos
CPU Process65nm
GPU Process65nm
eDRAM Process65nm
Nand Size16MB, 512MB
Video OutputsA/V and HDMI
Wattage150W
12V Amperage12.1A
PredecessorJasper
SuccessorTrinity

Jasper_B, named Tonasket, is the successor to the Jasper, and is the final motherboard used in the Original Xbox 360 series.

Commonly referred to by the community (but not by Microsoft) as "Kronos", a reference to the GPU used.

Notable Differences

  • The Zeus GPU has been replaced with the Kronos GPU
  • Samsung K4J10324QD-HC14 RAM was added as an option
  • Hynix H5RS5223CFR-14C RAM is no longer used
  • 8x64MB RAM configurations are no longer used, but still supported by the motherboard
  • The 256MB nand chip was no longer used, only 512MB configurations were used in the Arcade SKU
  • The additional traces and pads for DUMBO/PANDA flash controller were removed
  • An alternate simplified standby circuit for V_3P3STBY and V_1P8STBY was added, but only some manufacturers used it
  • The board layout was cleaned up
  • All motherboards use the updated RF02 board
  • The extended GPU heatsink was reverted back to the low profile GPU heatsink
  • All boards now use solid state capacitors for the CPU and GPU output filters
  • There is no longer glue applied around the CPU and GPU

Specifications