Xbox 360:GPU Retrofit: Difference between revisions

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== Zephyr_B/C==
== Zephyr_B/C==
Both variants of the Jasper 65nm GPU can be retrofitted onto a Zephyr_B/C motherboard. [https://www.youtube.com/watch?v=AjppSp-QWdc (Demo Video)]
Both variants of the 65nm GPU can be retrofitted onto a Zephyr_B/C motherboard. [https://www.youtube.com/watch?v=AjppSp-QWdc (Demo Video)]


Guide By: Octal450
Guide By: Octal450
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! Name !! Part Number !! GPU/eDRAM Lithography !! GPU/eDRAM Temp Target !! GPU/eDRAM Temp Critical
! Name !! Part Number !! GPU/eDRAM Lithography !! GPU/eDRAM Temp Target !! GPU/eDRAM Temp Critical
|-
|-
| Zeus || X810478<br>X817793 || 65nm/80nm || 71C/73C || 90C/92C
| Zeus || X810478<br>X817793 || 65nm/90nm || 71C/73C || 90C/92C
|-
|-
| Kronos || X820894 || 65nm/65nm || 75C/77C || 90C/92C
| Kronos || X820894 || 65nm/65nm || 75C/77C || 90C/92C
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''' Install GPU '''
''' Install GPU '''
* Replace 80nm U4D1 with 65nm
* Replace 90nm U4D1 with 65nm


''' Set VID 1.075V '''
''' Set VID 1.075V '''
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* Remove IC U5C1
* Remove IC U5C1
* Install jumper as shown to tie V_GPUPCIE to V_GPUCORE
* Install jumper as shown to tie V_GPUPCIE to V_GPUCORE
** Use a 28awg or thicker gauge wire
** Be careful not to short to any nearby components or pads
** Be careful not to short to any nearby components or pads
** Strongly recommended to cover jumper with PCB mask
** Strongly recommended to cover jumper with PCB mask
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== Falcon ==
== Falcon ==
Both variants of the Jasper 65nm GPU can be retrofitted onto a Falcon motherboard. [https://www.youtube.com/watch?v=GnZIr4XbvZ0 (Demo Video)]
Both variants of the 65nm GPU can be retrofitted onto a Falcon motherboard. [https://www.youtube.com/watch?v=GnZIr4XbvZ0 (Demo Video)]


Guide By: Octal450
Guide By: Octal450
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! Name !! Part Number !! GPU/eDRAM Lithography !! GPU/eDRAM Temp Target !! GPU/eDRAM Temp Critical
! Name !! Part Number !! GPU/eDRAM Lithography !! GPU/eDRAM Temp Target !! GPU/eDRAM Temp Critical
|-
|-
| Zeus || X810478<br>X817793 || 65nm/80nm || 71C/73C || 90C/92C
| Zeus || X810478<br>X817793 || 65nm/90nm || 71C/73C || 90C/92C
|-
|-
| Kronos || X820894 || 65nm/65nm || 75C/77C || 90C/92C
| Kronos || X820894 || 65nm/65nm || 75C/77C || 90C/92C
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''' Install GPU '''
''' Install GPU '''
* Replace 80nm U4D1 with 65nm
* Replace 90nm U4D1 with 65nm


''' Set VID 1.075V '''
''' Set VID 1.075V '''
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* Write the nand to the console
* Write the nand to the console


== Jasper V1 ==
== Jasper ==
The Kronos1 GPU can be retrofitted onto a Jasper V1 motherboard. [https://www.youtube.com/watch?v=66CKvpfTKXU (Demo video)]
The Kronos GPU can be retrofitted onto a Jasper motherboard. [https://www.youtube.com/watch?v=66CKvpfTKXU (Demo video)]


Guide By: Octal450
Guide By: Octal450
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''' Install GPU '''
''' Install GPU '''
* Replace Zeus U4D1 with Kronos1
* Replace Zeus U4D1 with Kronos


''' Modify Firmware (Optional)'''
''' Modify Firmware (Optional)'''
* This step is optional, Zeus targets 71C/73C, there is no harm by running the chip 2 degrees cooler
* This step is optional, Zeus targets 71C/73C, there is no harm by running the chip a few degrees cooler
* Use [https://github.com/Octal450/J-Runner-with-Extras/releases/latest J-Runner with Extras] to dump the nand
* Use [https://github.com/Octal450/J-Runner-with-Extras/releases/latest J-Runner with Extras] to dump the nand
* Open the SMC Config Editor from the Nand menu, and update the thermal targets from the table above
* Open the SMC Config Editor from the Nand menu, and update the thermal targets from the table above
* Write the nand to the console
* Write the nand to the console

Revision as of 02:27, 8 April 2024

Exclamation-triangle-fill.svgThis page is intended for advanced technicians only. If you do not have advanced component and BGA rework skills, you will not be able to complete the process successfully.


Some GPUs can be retrofitted onto earlier boards. This page contains instructions for what changes need to be done in order for the retrofit to work.

Zephyr_B/C

Both variants of the 65nm GPU can be retrofitted onto a Zephyr_B/C motherboard. (Demo Video)

Guide By: Octal450

Instructions

GPU Table

Name Part Number GPU/eDRAM Lithography GPU/eDRAM Temp Target GPU/eDRAM Temp Critical
Zeus X810478
X817793		 65nm/90nm 71C/73C 90C/92C
Kronos X820894 65nm/65nm 75C/77C 90C/92C

Install GPU

  • Replace 90nm U4D1 with 65nm

Set VID 1.075V

  • Remove 0 ohm R8B9
  • Remove 0 ohm R8B10

Set FSB/PCIe/Memory Calibration

  • FSB:
    • Remove 4.87K ohm R5R3
    • Install 40.2 ohm as pullup to nearby V_GPUCORE
      • You can either use a wire to the capacitor as shown, or scrape to expose V_GPUCORE voltage plane
      • Fsbcal65.pngFsbcal65b.png
  • PCIe:
    • Remove 1.47K ohm R4R3
    • Remove 562 ohm R5D1
    • Replace 2K ohm R5D2 with 49.9 ohm
  • Memory:
    • Replace 40.2 ohm R4R8 with 240 ohm
    • Replace 40.2 ohm R4T1 with 240 ohm

Tie V_GPUPCIE to V_GPUCORE

  • Remove IC U5C1
  • Install jumper as shown to tie V_GPUPCIE to V_GPUCORE
    • Use a 28awg or thicker gauge wire
    • Be careful not to short to any nearby components or pads
    • Strongly recommended to cover jumper with PCB mask
    • Vpcietie65.png

Modify Firmware

  • Use J-Runner with Extras to dump the nand
  • Change the type to Jasper 16MB, then RGH the console to get the CPU key
  • Set the required XeBuild options and build the image
  • Open the SMC Config Editor from the Nand menu, and update the thermal targets from the table above
  • Write the nand to the console

Falcon

Both variants of the 65nm GPU can be retrofitted onto a Falcon motherboard. (Demo Video)

Guide By: Octal450

Instructions

GPU Table

Name Part Number GPU/eDRAM Lithography GPU/eDRAM Temp Target GPU/eDRAM Temp Critical
Zeus X810478
X817793		 65nm/90nm 71C/73C 90C/92C
Kronos X820894 65nm/65nm 75C/77C 90C/92C

Install GPU

  • Replace 90nm U4D1 with 65nm

Set VID 1.075V

  • Remove 0 ohm R8B9
  • Remove 0 ohm R8B10

Set FSB/PCIe/Memory Calibration

  • FSB:
    • Install 40.2 ohm R4R9
    • Remove 4.87K ohm R5R3
  • PCIe:
    • Remove 1.47K ohm R4R3
    • Remove 562 ohm R5D1
    • Replace 2K ohm R5D2 with 49.9 ohm
  • Memory:
    • Replace 40.2 ohm R4R8 with 240 ohm
    • Replace 40.2 ohm R4T1 with 240 ohm

Tie V_GPUPCIE to V_GPUCORE

  • Remove 0 ohm R4C31
  • Install 0 ohm R4P13
  • Install 0 ohm R4P14
  • Remove IC U5C1

Modify Firmware

  • Use J-Runner with Extras to dump the nand
  • Change the type to Jasper 16MB, then RGH the console to get the CPU key
  • Set the required XeBuild options and build the image
  • Open the SMC Config Editor from the Nand menu, and update the thermal targets from the table above
  • Write the nand to the console

Jasper

The Kronos GPU can be retrofitted onto a Jasper motherboard. (Demo video)

Guide By: Octal450

Instructions

GPU Table

Name Part Number GPU/eDRAM Lithography GPU/eDRAM Temp Target GPU/eDRAM Temp Critical
Kronos X820894 65nm/65nm 75C/77C 90C/92C

Install GPU

  • Replace Zeus U4D1 with Kronos

Modify Firmware (Optional)

  • This step is optional, Zeus targets 71C/73C, there is no harm by running the chip a few degrees cooler
  • Use J-Runner with Extras to dump the nand
  • Open the SMC Config Editor from the Nand menu, and update the thermal targets from the table above
  • Write the nand to the console
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