CMOS Processor Table

Generation	Description
G1	9672-Rn1 Service discontinued 2003-12-31
G2	9672-Rn2, 9672-Rn3 Service discontinued 2004-12-31
G3	9672-Rn4, 2003-nnn (Multiprise 2000) 9672-Rn4 Service discontinued 2006-12-31, 2003 Service discontinued 2007-12-31
G4	9672-Rn5 9672-Rn5 Service discontinued 2007-12-31,
G5	9672-Rn6, 9672-Yn6, 9672-Tn6, 7060-nnn (Multiprise 3000) 9672-nn6 Service discontinued 2010-12-31 7060 Service discontinued 2012-12-31
G6	9672-Xn7, 9672-Zn7 9672-nn7 Service discontinued 2010-12-31
G7	IBM eServer zSeries 900/800 z900 (2064),z800 (2066) z/Architecture Principles of Operation, SA22-7832-01 z900 and z800 Service Discontinued 2014-12-31 HLASM OPTABLE value ZOP
G8	IBM eServer zSeries 990/890 z990 (2084), z890 (2086) z/Architecture Principles of Operation, SA22-7832-04 z/Architecture Reference Summary, SA22-7871-01 HLASM opcodes, APAR PQ85963, OPTABLE value YOP z990 Service Discontinued on 2014-12-31 z890 Service Discontinued on 2016-10-31
G9	IBM System z9 z9 EC (2094), z9 BC (2096) z/Architecture Principles of Operation, SA22-7832-05 z/Architecture Reference Summary, SA22-7871-02 HLASM opcodes, APAR PK18170, OPTABLE value ZS3 z9 EC Service Discontinued 2017-10-31 z9 BC Service Discontinued 2019-01-31
G10	IBM System z10 z10 EC (2097), z10 BC (2098) z/Architecture Principles of Operation, SA22-7832-06 (z10 EC) z/Architecture Principles of Operation, SA22-7832-07 (z10 BC, z10 EC) z/Architecture Reference Summary, SA22-7871-05 HLASM opcodes, APAR PK58463, OPTABLE value ZS4 z10 EC and z10 BC Service Discontinued 2019-12-31
G11	IBM zEnterprise 196/114 z196 (2817), z114 (2818) z/Architecture Principles of Operation, SA22-7832-08 z/Architecture Reference Summary, SA22-7871-06 HLASM opcodes, APAR PK97799, OPTABLE value ZS5 z196 Service Discontinued 2021-12-31 z114 Service Discontinued 2022-12-31
G12	IBM zEnterprise EC12/BC12 zEC12 (2827), zBC12 (2828) z/Architecture Principles of Operation, SA22-7832-09 z/Architecture Reference Summary, SA22-7871-07 HLASM opcodes, APAR PM49761, OPTABLE value ZS6
G13	IBM z13, IBM z13s z13 (2964), z13s (2965) z/Architecture Principles of Operation, SA22-7832-10 z/Architecture Reference Summary, SA22-7871-08 HLASM opcodes, APAR PM79901, OPTABLE value ZS7
G14	IBM z14 z14 (3906, 3907) z/Architecture Principles of Operation, SA22-7832-11 z/Architecture Reference Summary, SA22-7871-09 HLASM opcodes, APAR PI62275, OPTABLE value ZS8
G15	IBM z15 z15 (8561, 8562) z/Architecture Principles of Operation, SA22-7832-12 z/Architecture Reference Summary, SA22-7871-10 HLASM opcodes, APAR PH00902, OPTABLE value Z15 or ZS9
G16	IBM z16 z16 (3931, 3932) z/Architecture Principles of Operation, SA22-7832-13 z/Architecture Reference Summary, SA22-7871-11 HLASM opcodes, APAR PH39324, OPTABLE value Z16 or ZSA

Notes:

• The first generation to formally have a "G" designation was the G3 and the last was the G6.
• P/390, R/390 and 3006 (Integrated Server) are also considered "G2" at a current licensed internal code level
• Linux for S/390 requires a "G5" or later processor or equivalent in 31-bit mode. Linux for IBM Z requires a z/Architecture processor or equivalent in 64-bit mode.
• For information on which Linux distros are supported on which generations go to Linux on IBM Z tested platforms.
• z/VM Level Sets
• z/VM V3 requires a "G2" or later processor or equivalent (Architecture Level Set 1). See the z/VM V3.1 General Information Manual, GC24-5944-01 for more information.
• z/VM V4 requires a "G5" or later processor or equivalent (Architecture Level Set 2). See the z/VM V4.4 General Information Manual, GC24-5991-05 for more information.
• z/VM V5 requires a z/Architecture (z900/z800 or later) processor (Architecture Level Set). See the z/VM V5.4 General Information Manual, GC24-6095-08 for more information.
• z/VM V6R1 requires a System z10 (or later) processor (Architecture Level Set). See the z/VM V6.3 General Information Manual, GC24-6193-10 for more information. 
• z/VM V6R4 requires a z196/z114 (or later) processor (Architecture Level Set).  See the z/VM V6.4 General Information Manual, GC24-6193-17 for more information.
• z/VM V7R1 requires a zEC12/zBC12 (or later) processor (Architecture Level Set). See the z/VM V7.1 General Information Manual, GC24-6286-03 for more information.
• z/VM V7R2 requires a z13/z13s (or later) processor (Architecture Level Set). See the z/VM V7.2 General Information Manual, GC24-6286-07 for more information.
  
• z/VM V7R3 requires a z14 (or later) processor (Architecture Level Set). See the z/VM V7.3 General Information Manual, GC24-6286-73 for more information.
  
• z/OS Level Sets
• z/OS V1 requires the zSeries 900 (z900), zSeries 800 (z800) or later, the 9672 G5 or G6, or the Multiprise 3000 processor. z/OS V1 is not supported on the z15 (or later) processors.
  
• z/OS V2R1 requires a System z9 (or later) processor. See the z/OS V2R1 Introduction and Release Guide, GA32-0887-01 for more information.
  
• z/OS V2R2 requires a System z10 (or later) processor. See the z/OS V2R2 Introduction and Release Guide, GA32-0887-08 for more information.
  
• z/OS V2R3 requires a zEC12/zBC12 (or later) processor. See the z/OS V2R3 Introduction and Release Guide, GA32-0887-30 for more information.
  
• z/OS V2R4 requires a zEC12/zBC12 (or later) processor. See the z/OS V2R4 Introduction and Release Guide, GA32-0887-40 for more information.
  
• z/OS V2R5 requires a z13/z13s (or later) processor. See the z/OS V2R5 Introduction and Release Guide, GA32-0887-50 for more information.
  
• z/OS V3R1 requires a z14 (or later) processor.
• Information on Processor Version Codes and SRM Constants (including information returned by STIDP and STSI).