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Eight green DDR4 RDIMM modules in a row

OWC

OWC 128GB (8×16GB) DDR4 2933 CL21 ECC Registered RDIMM 2Rx4 288-pin 1.2V PowerEdge C4140 memory upgrade

SKU CH-2HKT-8T10W

Eight 16 GB DDR4 2933 ECC registered RDIMMs totalling 128 GB for PowerEdge C4140 servers

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 128GB (8 x 16GB)

Show 4 more
  • 128GB total capacity across eight 16GB modules
  • ECC registered design detects and corrects data errors
  • JEDEC-standard DDR4 2933 CL21 at 1.2V
  • 2Rx4 organisation on 288-pin RDIMM form factor
  • Validated for PowerEdge C4140 with Cascade Lake CPUs

Server-grade ECC RDIMM kit

This OWC kit supplies 128GB of DDR4 memory across eight 16GB registered DIMMs. It is built for the PowerEdge C4140 with CascadeLake CPUs and will not work in standard desktop computers or alongside unbuffered or load-reduced modules.

Sustained workload stability

Registered buffering and ECC correction keep data integrity intact during continuous server and workstation tasks. The modules also run at 2133, 2400 or 2666MHz when the platform requires a lower speed.

2933MHz CL21 registered specification

The decisive figure is the DDR4 2933 CL21 registered profile at 1.2V. Buyers whose systems demand a different speed, latency or unbuffered design must choose another kit.

How it compares

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

Price $918.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.18 per GB
Cheaper than about 56% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D42R4128K
Total capacity128 GB (8 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsPowerEdge C4140 (CascadeLake CPU)

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 1.2V DDR4 2933 kit draw when the PowerEdge C4140 runs all day?

Each module operates at 1.2 volts, the standard DDR4 voltage, so total draw scales with the eight 16 GB sticks installed.

What must the server already have to accept this 288-pin ECC registered RDIMM kit?

A PowerEdge C4140 with Cascade Lake CPUs and free DDR4 RDIMM slots that support registered ECC memory.

Will these CL21 2933 MHz modules run with older 2133 MHz DIMMs left in the chassis?

Yes, the kit is backward compatible with 2133, 2400 and 2666 MHz speeds, though all channels will run at the slowest installed rate.

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