POWER9 Hardware Compatibility List/Memory

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.

Ram will be running at a potentially slower frequency (2666, 2400, or 2133) based on if there is 1, 2 or 4 DIMMs per channel

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	tested 8 sticks/512GB@2666 total by Gyakovlev
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
Samsung	M393A4K40CB2-CTD7Q	32GB	PC4-21300R	Registered	Yes	POWER9 DD2.2	hostboot-3beba24	MPC7500	2*32GB in Blackbird
Samsung	M393A4K40CB2-CTD7Y	32GB	PC4-21300R	Registered	Yes	POWER9 DD2.2		mx08	2*32GB in Blackbird
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	CT32G4RFD4266	32GB	PC4-21300	Registered	Yes			drp	Tested in Blackbird with 2x32GB
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
Samsung	M393A1G43EB1-CTD	8GB	PC4-2666	Registered	Yes	POWER9 DD2.2		Red Hat
Samsung	M393A4K40CB2-CTD	32GB	PC4-2666	Registered	Yes	POWER9 DD2.2		Red Hat

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