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Four green 288-pin DDR5 RDIMM modules without heat spreaders

OWC

OWC 512GB (4x128GB) DDR5 4800 CL40 4Rx4 ECC Registered RDIMM memory upgrade

SKU CH-1892-V24YM

512 GB kit of four 128 GB DDR5 4800 CL40 4Rx4 ECC registered RDIMMs for compatible Lenovo ThinkSystem servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 512GB (4 x 128GB)

  • 512 GB total capacity across four 128 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3

Server-grade DDR5 ECC kit

This 512 GB kit contains four 128 GB DDR5 4800 CL40 4Rx4 registered ECC RDIMMs built for Lenovo ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3 servers. It delivers JEDEC-standard error-correcting memory for workloads that demand data integrity and high capacity.

Compatibility checklist

Verify that your system is one of the listed ThinkSystem models and that its memory slots accept 288-pin registered DDR5 RDIMMs running at 1.1 V. The modules are not compatible with standard desktop computers and must not be mixed with unbuffered or load-reduced ECC memory.

What the kit provides

Four matched 128 GB modules arrive ready to install, letting you populate four slots in a single step and reach the full 512 GB capacity without sourcing individual sticks. The registered design and on-die ECC maintain signal integrity across all channels for stable server operation.

How it compares

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

Price $15,936.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.13 per GB
Pricier than about 89% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D54R4512S
Total capacity512 GB (4 × 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 systemsLenovo ThinkSystem SD650 V3
Lenovo ThinkSystem SD650-I V3
Lenovo ThinkSystem SD665 V3
Lenovo ThinkSystem SD665-N V3
Lenovo ThinkSystem SR630 V3

Other versions of this model

5 more in the same range

Questions about this item

Does the 512GB kit ship as four 128GB modules or do I need to buy extra sticks?

The kit contains four 128GB DDR5 4800 CL40 4Rx4 registered ECC RDIMMs, giving 512GB total with no additional modules required.

Should I pick this 512GB 4800 CL40 kit or a different capacity for my ThinkSystem SR630 V3?

Choose this 512GB kit when your SR630 V3 needs the maximum supported registered ECC capacity at 4800 MT/s; smaller kits use the same speed and latency but provide less total memory.

What does the 4800 MT/s rating mean once the modules are installed in a ThinkSystem SD650 V3?

The modules will run at 4800 MT/s with CL40 latency at 1.1 V, delivering PC5-38400 bandwidth while the registered ECC design maintains data integrity for server workloads.

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