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Eight green DDR5 RDIMM modules in anti-static tray

OWC

OWC 1TB (8x128GB) DDR5 4800 CL40 4Rx4 ECC Registered RDIMM DL385 DL560 DX360 DX365 ML350 memory upgrade

SKU CH-28GR-D1FTE

Eight 128 GB DDR5 4800 CL40 ECC registered RDIMMs add 1 TB to compatible HP ProLiant Gen11 servers

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 1TB (8 x 128GB)

  • 1TB capacity across eight 128GB modules for high-density server workloads
  • DDR5 4800 CL40 ECC registered for data integrity under load
  • 4Rx4 organisation maximises rank density on 288-pin RDIMM form factor
  • 1V operation reduces power draw in compatible ProLiant Gen11 systems
  • JEDEC and RoHS compliant for warranty-safe upgrades

System-specific DDR5 upgrade kit

This 1 TB kit contains eight 128 GB DDR5 4800 CL40 4Rx4 ECC Registered RDIMMs built for HP ProLiant DL385 Gen11, DL560 Gen11, DX360 Gen11, DX365 Gen11 and ML350 Gen11 servers. It delivers registered ECC memory at 1.1 V for workloads that require data integrity and maximum capacity per slot.

Registered ECC DDR5 4800 CL40

The modules run at DDR5 4800 (PC5-38400) with CAS latency 40 and a 4Rx4 organisation, providing error-correcting registered operation that the target ProLiant platforms expect. They will not work in standard desktop boards and cannot be mixed with unbuffered or load-reduced DIMMs.

JEDEC and RoHS compliant kit

Every module meets JEDEC standards and RoHS requirements, giving a warranty-safe upgrade path for the listed servers. The eight-module pack fills all channels in a single purchase, avoiding the need to source individual sticks from multiple batches.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $31,469.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $31.47 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D54R41TBK
Total capacity1 TB (8 × 128 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHP ProLiant DL385 Gen11
HP ProLiant DL560 Gen11
HP ProLiant DX360 Gen11
HP ProLiant DX365 Gen11
HP ProLiant ML350 Gen11

Other versions of this model

5 more in the same range

Questions about this item

What does the 4800 MT/s rating mean once the modules are installed in a ProLiant Gen11 server?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.1 V, delivering the JEDEC-standard data rate the platform expects for registered ECC memory.

How does the 288-pin DDR5 RDIMM interface affect bandwidth and capacity limits in these servers?

Each 288-pin registered DIMM presents a 4Rx4 organisation, so eight modules populate eight slots for a total of 1 TB while the memory controller governs maximum supported capacity per channel.

What physical clearance and slot layout do the 128 GB sticks need in a DL385, DL560, DX360, DX365 or ML350 Gen11?

Standard 288-pin RDIMM height with no heat spreader fits the server DIMM slots; eight modules occupy eight slots across the supported Gen11 platforms.

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