We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Eight green DDR4 RDIMM modules in a row

OWC

OWC 128GB (8x16GB) DDR4 3200 CL22 288-pin 1.2V ECC Registered RDIMM Cisco UCS C4200

SKU CH-E77W-KWJ7Y

Eight-module kit adds 128 GB of DDR4 3200 ECC registered memory to a Cisco UCS C4200 server

  • Capacity128GB (8 x 16GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.2V
  • ECCYes

Capacity 128GB (8 x 16GB)

Show 2 more configurations
  • 128GB total capacity from eight 16GB modules
  • ECC registered design protects data integrity in servers
  • DDR4 3200 speed with CL22 latency
  • 2V operation reduces power draw
  • Validated for Cisco UCS C4200 systems

OWC 128GB DDR4 ECC RDIMM Kit

This 128GB kit contains eight 16GB DDR4 3200 registered DIMMs built for the Cisco UCS C4200 server platform. The modules are ECC registered, so they will not work in standard desktop computers or alongside unbuffered or load-reduced memory. Each stick runs at 1.2V with CL22 latency and a 1Rx4 organisation.

Thermals and power in normal use

Operating at the standard 1.2V DDR4 voltage, the modules draw minimal power and generate little heat during typical server workloads. No heat spreaders are fitted, relying on chassis airflow for cooling. The registered design adds a small electrical load per channel but keeps signal integrity stable under sustained use.

Build quality and daily implications

OWC tests every module in-house to meet JEDEC and RoHS specifications, and the kit replaces Cisco part numbers UCSMRX16G1RW and UCSXMRX16G1RW. The 288-pin RDIMM form factor fits only compatible server slots, so verify your C4200 memory configuration before installation. Matching capacity, speed and vendor across all slots is recommended for optimal performance.

Highlights

  • 128GB total capacity from eight 16GB modules
  • ECC registered design protects data integrity in servers
  • DDR4 3200 speed with CL22 latency
  • 2V operation reduces power draw
  • Validated for Cisco UCS C4200 systems

Specifications

BrandOWC
Part Number3R2D41R4128K
Capacity128GB (8 x 16GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemCisco UCS C4200

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I install the 8x16GB DDR4 3200 RDIMM kit in the Cisco UCS C4200, and what step is often missed?

Power down the server, open the chassis, align each 288-pin module with the DIMM slots, press firmly until both latches click, then verify all 128GB appears in BIOS before closing the case.

What maintenance or replacement will this ECC Registered DDR4 kit need later?

No routine maintenance is required; if a module fails, replace it with an identical 16GB 1Rx4 CL22 1.2V DDR4 3200 RDIMM to keep rank and timing consistent across all slots.

What limit appears first under sustained load with this 128GB DDR4 3200 CL22 kit?

The CL22 latency at 3200 MT/s sets the throughput ceiling; sustained workloads will hit that timing boundary before voltage or thermal limits become a factor.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.