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
Four green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 512GB 4x128GB DDR5 4800 CL40 1.1V ECC RDIMM Cisco UCS C220 M7

SKU CH-MBYK-XTP5E

512 GB DDR5 kit of four 128 GB ECC registered DIMMs at 4800 MT/s CL40 1.1 V for Cisco UCS C220 M7

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity scales demanding server workloads
  • 4800 MT/s DDR5 speed feeds high-throughput applications
  • ECC registered design protects data integrity in critical tasks
  • 1 V operating voltage reduces power draw per module
  • Validated for Cisco UCS C220 M7 ensures drop-in compatibility

Cisco UCS C220 M7 memory kit

This 512GB kit supplies four 128GB DDR5 RDIMMs built for the Cisco UCS C220 M7 rack server. Registered ECC operation and a CL40 latency profile target enterprise workloads that require data integrity and high capacity per slot.

Fills all four channels with registered modules

Each stick uses a 4Rx4 organisation and 288-pin DDR5 form factor so the server memory controller can address the full 512GB without additional buffering hardware. The 1.1V operating voltage matches the platform specification and leaves headroom for dense configurations.

Runs at 4800 MT/s with standard DDR5 power draw

Modules operate at the rated JEDEC speed without overclocking, keeping thermals predictable in a passively cooled server chassis. No heat spreaders are fitted, so airflow from the system fans provides the only cooling path.

How it compares

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

Price $16,994.99
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 $33.19 per GB
Pricier than about 90% 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 nameNEMIX RAM
Product lineCisco Server Compatible Series Memory
Model nameCisco DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K4
Total capacity512 GB (4 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsCisco
In the box
Included items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the CL40 latency become a bottleneck when the kit runs at 4800 MT/s under sustained heavy load?

At 4800 MT/s the CL40 timing is the native specification for this DDR5 registered kit; latency scales with the rated speed and the server memory controller manages it automatically.

How much heat does the 1.1 V registered 4Rx4 design generate during all-day operation?

The modules run at the standard DDR5 server voltage of 1.1 V with no heat spreader, relying on chassis airflow; registered 4Rx4 organisation is typical for dense 128 GB DIMMs in rack servers.

Which Cisco server must I already own for this 288-pin ECC RDIMM kit to be compatible?

The kit is validated for the Cisco UCS C220 M7 rack server; it plugs directly into that platform’s DDR5 RDIMM slots without additional hardware.

More in Model-Specific Memory Upgrades

Similar items