Tonasket

Tonasket

Part Number	X820379
Introduced	Late 2009
Type	Motherboard
Used In	Xbox 360 (Original)
CPU Type	Loki
GPU Type	Kronos
CPU Process	65nm
GPU Process	65nm
eDRAM Process	65nm
Nand Size	16MB, 512MB
Video Outputs	A/V and HDMI
Wattage	150W
12V Amperage	12.1A
Predecessor	Jasper
Successor	Trinity

Tonasket is the successor to the Jasper, and is the final motherboard used in the Original Xbox 360 series. It is considered a revision of Jasper despite having its own name.

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

Notable Differences

• The 65nm Zeus GPU has been replaced with the 65nm Kronos GPU, which shrinks the eDRAM to 65nm
• 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 an 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

• 65nm IBM Loki CPU
• 65nm ATi Kronos GPU with integrated 65nm NEC eDRAM
• 512MB GDDR3 RAM
  • 4x128MB Hynix H5RS1H23MFR-14C
  • 4x128MB Qimonda HYB18H1G321AF-14
  • 4x128MB Samsung K4J10324QD-HC14
• PSB Southbridge
• HANA
• Nand
  • 16MB Hynix HY27US08281A
  • 512MB Hynix HY27UF084G2B
  • 512MB Samsung K9F4G08U0B
• Boardcom or ICS Ethernet PHY
• Aluminum CPU Heatsink
• Low Profile GPU Heatsink