Stepping

Processor silicon revisions are denoted by their stepping. Known steppings used on the Xbox 360 are listed below. Details can be found in the respectively linked page.

XCPU

Waternoose

Main article: Waternoose

X02046

• A00 - DD1
• B00 - Production DD2
• B01 - Production DD2.1

X806416

• A00 - Production DD3

Loki

Main article: Loki

• A00
• A01 - Production

GPU

Y1

Main article: Y1 (GPU)

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

Y2

Main articles: Y2 (GPU), Rhea, and Elpis

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

Y3

Main articles: Zeus and Kronos

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

eDRAM

Edifis

Main article: Edifis

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

Styx

Main article: Styx

• FS11
• FS21 - Styx-90 Production
• GS21 - Styx-65 Production

XCGPU

Valhalla

Main article: Valhalla

• A00
• A01
• A02 - Production

Oban

Main article: Oban

• A03 - Production

Southbridge

XSB

Main article: XSB

• E2
• G0 - Production
• R0 - Production

PSB

Main article: PSB

• A0 - Production

ANA

Main article: ANA

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

HANA

Main article: HANA

• A00
• B00 - Production