Stepping

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Processor silicon revisions are denoted by their stepping. Known steppings used on the Xbox 360 are listed below.

XCPU

Waternoose

X02046
  • A00 - DD1
  • B00 - Production DD2
  • B01 - Production DD2.1
X806416
  • A00 - Production DD3

Loki

  • A01 - Production

GPU

Y1

  • A11
    • A11N1
    • A11N2
  • A21
    • A21N1
    • A21N2
  • A22
  • A31
  • A32 - Production

Y2

  • B11
  • B11L
  • B12
  • B12L
  • B13L - Production
  • B14L - Production

Y3

  • C11
  • C12
  • C21
  • C22 - Production
  • C23 - Production

eDRAM

Edifis

  • ES1 (A00)
  • ES2 (B00)
  • ES3 (C00) - Production

Styx

  • FS11
  • FS21 - 80nm Production
  • GS21 - 65nm Production

XCGPU

Valhalla

  • A01
  • A02 - Production

Winchester CGPU

  • A03 - Production

Southbridge

XSB

  • E2
  • G0 - Production
  • R0 - Production

PSB

  • A0 - Production

ANA

  • A00
  • B00
  • B01
  • B02
  • B03 - Production
  • C00 - Cancelled

HANA

  • A00
  • B00 - Production