POWER9 Hardware Compatibility List/Memory

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Compatibility rules

The criteria for compatibility are essentially:

  • must be DDR4;
  • must be ECC;
  • must be registered (RDIMM);
  • must NOT be LRDIMM.

The supported module sizes are 8GB, 16GB, 32GB, 64GB and 128GB.

The supported memory speeds are 1600, 1866, 2133, 2400, 2666 MHz.

Platform Slots Max. Capacity
Talos II Up to two sockets, each of 4 channels of 2 slots each 2TiB
Blackbird Two channels, one slot each 256GiB

Tested memory

Compatible memory

Module Validation
Manufacturer Model Size Speed Type ECC Stepping Firmware Source Notes
Pacific Sun X10723042S 8GB PC4-19200 Registered Yes POWER9 DD2.1 Hostboot cc2d45a Official
Hynix HMA41GR7MFR4N-TF 8GB PC4-17000R Registered Yes POWER9 DD2.2 Hostboot 76f78f4 ernsteiswuerfel
Hynix HMA82GR7AFR8N-UH 16GB PC4-19200 Registered Yes POWER9 DD2.2 Hostboot e36ec63 Official
Samsung M393A1G40DB0-CPB 8GB PC4-17000 Registered Yes POWER9 DD2.2 Hostboot 30dfd3b meklort Requires System Package v1.02
Kingston KTH-PL424/16G 16GB PC4-19200 Registered Yes POWER9 DD2.1 Hostboot cc2d45a Official
Micron MTA18ASF2G72PZ-2G3B1 16GB PC4-19200 Registered Yes POWER9 DD2.2 Hostboot 28927a7 Official
Micron MTA18ASF2G72PDZ-2G3D1 16GB PC4-19200 Registered Yes POWER9 DD2.1 Hostboot cc2d45a Official
Micron MTA18ASF2G72PDZ-2G6D1 16GB PC4-21333 Registered Yes POWER9 DD2.2 Hostboot 884b60b smaeul
Micron MTA36ASF4G72PZ-2G6D1 32GB PC4-21333 Registered Yes POWER9 DD2.2 Hostboot 6ffaeb4 cyrozap
Nemix Ram 8GB PC4-21300 Registered Yes POWER9 DD2.2 Hostboot 884b60b suertreus
Samsung M393A4K40BB1-CRC 32GB PC4-19200 Registered Yes POWER9 DD2.1 Hostboot 1e2221d Official
Samsung M393A8K40B22-CWD 64GB PC4-21300 Registered Yes POWER9 DD2.2 Hostboot 884b60b Official
Samsung M393A2K40BB2-CTD 16GB PC4-21300 Registered Yes POWER9 DD2.2 Hostboot 0c8fa110 meklort Will run at 2400MT/s with System Package v1.00
Samsung M393A2K40CB2-CTD 16GB PC4-21300V-R Registered Yes POWER9 DD2.2 Hostboot 884b60b MarcusC
Samsung M393A4K40BB2-CTD8Q 32GB PC4-21333 Registered Yes POWER9 DD2.2 Hostboot 28927a7 luke-jr
Samsung M393A2G40EB2-CTD 16GB PC4-21300V-R Registered Yes POWER9 DD2.2 Hostboot 30dfd3b JSharp Tested extensively with System Package v1.02 but does boot on v1.00, Dual 8-Core POWER9, x8 DIMM Modules (RCS Recommended Slot Configuration) 128GiB total; also tested x4 DIMM Modules (RCS Recommended Slot Configuration) 64GiB total
Samsung M393A4K40CB2-CTD6Q 32GB PC4-21300 Registered Yes POWER9 DD2.2 hostboot-884b60b kev009 8 DIMMs working well
Kingston KSM24RS8/8MAI 8GB PC4-19200R Registered Yes POWER9 DD2.2 Hostboot d286337 ernsteiswuerfel
Kingston KVR24R17S8K4/32 8GB PC4-19200 Registered Yes POWER9 DD2.2 1.04, PNOR d286337d sharkcz kit 4x 8GB, got 1 stick faulty, but 3x 8GB worked OK
Kingston KVR24R17D8/16MA 16GB PC4-19200 Registered Yes POWER9 DD2.2 1.04, PNOR d286337d sharkcz
Crucial CT16G4RFD4266.36FE1 16GB PC4-21300 Registered Yes POWER9 DD2.2 1.06 aperezbios tested with 2x16GB
Crucial CT4G4RFS8266 4GB PC4-21300 Registered Yes POWER9 DD2.2 Robbieab Purchased as the CT2K4G4RFS8266 8GB kit. Confirmed functional from the petitboot shell.
Crucial CT8G4RFS8266 8GB PC4-21300 Registered Yes CT2K8G4RFS8266 16GB kit (8GBx2). DDR4 PC4-21300 • CL=19 • Single Ranked • x8 based • Registered • ECC • DDR4-2666 • 1.2V • 1024Meg x 72. Confirmed with a working Debian GNU and Devuan GNU+Linux installation.
Ventura (Samsung) D4-62JA402SV-15 16GB PC4-17000 Registered Yes POWER9 DD2.2 mosst
Kingston KSM26RD8/16HAI 16GB PC4-2666 Registered Yes xkucf03 tested 2×16 GB in Blackbird

Incompatible memory

NOTE: Memory may be removed from this table after firmware support has been added, or there may be a fundamental hardware incompatibility. If you have incompatible memory listed in the table below, you may want to bookmark and check this page from time to time to see if a firmware update has resolved the issue.

Module Test Conditions
Manufacturer Model Size Speed Type ECC Stepping Firmware Last Test
Samsung M386A8K40BMB-CRC 64GB PC4-19200 Registered LRDIMM Yes POWER9 DD2.1 Hostboot 1e2221d 02/14/2018
Samsung KSM26RS8/8HAI 8GB PC4-26600 Registered DIMM Yes 07/15/2019