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 anti-static tray

OWC

OWC 256GB (8x32GB) DDR4 2400 CL17 ECC Registered RDIMM memory upgrade

SKU CH-6XW1-XQCJ2

Eight 32 GB DDR4 2400 CL17 ECC registered RDIMMs totalling 256 GB for Cisco UCS B200 M4 and C220 M4 servers

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 256GB (8 x 32GB)

  • 256 GB server capacity from eight 32 GB modules
  • DDR4 2400 CL17 speed for responsive workloads
  • ECC registered design protects data integrity
  • 2 V operation reduces power draw
  • Validated for Cisco UCS B200 M4 and C220 M4

Server memory upgrade kit

This OWC kit supplies 256 GB of DDR4 ECC Registered RDIMM memory across eight 32 GB modules. It is built for Cisco UCS B200 M4 and C220 M4 servers and workstations that require registered error-correcting memory. Standard desktop computers cannot use these modules.

Registered ECC constraints

Registered ECC RDIMMs cannot be mixed with unbuffered or load-reduced DIMMs in the same system. The memory operates at 1.2 V with a CAS latency of CL17 and conforms to the PC4-19200 (DDR4 2400) JEDEC standard. Compatibility is limited to platforms that explicitly support registered ECC DDR4.

Eight-module capacity limit

The kit delivers its full 256 GB only when all eight 32 GB modules are installed in a supported Cisco UCS server. Systems with fewer DIMM slots or a lower maximum memory ceiling will not accept the complete kit.

How it compares

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

Price $1,636.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.39 per GB
Cheaper than about 62% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2R4D42R4256K
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS B200 M4
Cisco UCS C220 M4

Other versions of this model

5 more in the same range

Questions about this item

Should I buy this 256GB kit or look for a different capacity for my Cisco UCS server?

This kit provides 256GB total using eight 32GB modules, matching the 288-pin DDR4 2400 CL17 ECC Registered RDIMM specification required by the Cisco UCS B200 M4 and C220 M4.

What does the DDR4 2400 PC4-19200 rating mean when the modules are installed in a Cisco UCS B200 M4?

The modules will run at 2400MHz with CL17 latency at 1.2V, delivering the full PC4-19200 bandwidth the platform expects from registered ECC RDIMMs.

Will these 288-pin DDR4 ECC Registered RDIMMs work in a standard desktop motherboard?

No, they are registered ECC modules designed for server and workstation platforms such as the Cisco UCS B200 M4 and C220 M4 and are not compatible with unbuffered desktop memory slots.

More in Model-Specific Memory Upgrades

Similar items