Jasper

Jasper

Part Number	X815842
Introduced	Late 2008
Used In	Xbox 360 (Original)
CPU Type	Loki
GPU Type	Zeus
CPU Process	65nm
GPU Process	65nm
eDRAM Process	90nm
Nand Size	16MB, 256MB, 512MB
Video Outputs	A/V and HDMI
Wattage	150W
12V Amperage	12.1A
Predecessor	Falcon
Successor	Tonasket

Jasper is the successor to the Falcon motherboard and is used in the Original Xbox 360 series. The production board is known as Jasper_A1.

Notable Differences

A July 2009 Jasper_A1 with a Kronos GPU

• The Rhea GPU has been replaced with the Zeus GPU
• Hynix H5RS5223CFR-14C and Hynix H5RS1H23MFR-14C RAM were added as options
• The XSB Southbridge has been replaced with the PSB Southbridge
• Arcade Jaspers came with 256MB (later 512MB) nand chips that combine system storage and a Memory Unit
• Traces and pads for an additional flash controller (referred to as "DUMBO" or "PANDA") have been added, but never populated
• Very late Jaspers manufactured in July 2009 come with the Kronos GPU instead of the Zeus GPU
• Some boards use solid state capacitors for the CPU and GPU output filters
• Some of the boards no longer have glue applied around the CPU and GPU

Specifications

• 65nm Loki CPU
• GPU
  • 65nm Zeus GPU with 90nm eDRAM (Before July 2009)
  • 65nm Kronos GPU with 65nm eDRAM (July 2009)
• 512MB GDDR3 RAM
  • 8x64MB Hynix H5RS5223CFR-14C
  • 4x128MB Hynix H5RS1H23MFR-14C
  • 4x128MB Qimonda HYB18H1G321AF-14
• PSB Southbridge
• HANA
• Nand
  • 16MB Hynix HY27US08281A
  • 256MB Hynix HY27UF082G2B
  • 512MB Hynix HY27UF084G2B
  • 512MB Samsung K9F4G08U0B
• Boardcom or ICS Ethernet PHY
• Aluminum CPU Heatsink
• Extended GPU Heatsink

Variations

Jasper_A0

First Jasper motherboard with the XSB southbridge. Never used in production retail units.

Jasper_A1

Same as Jasper_A0, but with the PSB southbridge. This is the version that was used in production.

Jasper Advanced

A Jasper Advanced board with the Zeus GPU

Jasper_A1 was modified slightly for the Xbox 360-GB Development Console. Support for 1GB of RAM was added by routing the 13th addressing line. Other minor changes and cleanup were made. Early versions use the Zeus GPU, while later boards used Kronos.

Tonasket

Main article: Tonasket

Tonasket, initially known as Jasper_B, is a revision of Jasper. Changes include use of the Kronos GPU and board layout cleanup.