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
Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 16GB DDR5 4800 ECC RDIMM 1Rx8 CL40 SuperMicro X13SEI-F X13SEI-TF memory upgrade

SKU CH-CAHP-JM4ZR

16 GB DDR5-4800 ECC registered RDIMM for SuperMicro X13SEI-F and X13SEI-TF servers

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC protection guards data integrity on SuperMicro X13SEI-F/TF servers
  • Registered DDR5 4800 MT/s CL40 boosts throughput for heavy workloads
  • 1 V operation reduces power draw per 16 GB module
  • Single-rank 1Rx8 layout keeps signal quality high at speed
  • 288-pin RDIMM form factor fits SuperMicro X13SEI-F and X13SEI-TF motherboards

16GB DDR5 4800 ECC RDIMM for SuperMicro X13SEI-F/TF

This 16GB DDR5 4800 ECC RDIMM module is built for SuperMicro X13SEI-F and X13SEI-TF server motherboards. It provides registered error-correcting memory for workloads that require data integrity and system stability. The single-rank 1Rx8 design operates at 1.1V with CL40 latency. It suits administrators expanding memory in compatible SuperMicro platforms.

Upgrading from non-ECC or lower-capacity DDR5

The jump is worth it when your current configuration lacks error correction or cannot address the dataset size needed for virtualization, databases, or file services. Registered DDR5 reduces electrical load on the memory controller, allowing larger total capacities than unbuffered alternatives. If your existing modules are unbuffered, non-ECC, or simply too few, this kit adds both capacity and reliability in one step.

Verify motherboard model, slot population rules.

Confirm the board is exactly a SuperMicro X13SEI-F or X13SEI-TF before ordering; other X13 or SuperMicro models are not guaranteed compatible by this listing. Check the manual for supported DIMM population sequences and maximum per-channel ranks. Ensure the platform accepts 1.1V DDR5 RDIMM modules and that open 288-pin slots are available for the 1Rx8 configuration.

How it compares

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

Price $400.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.06 per GB
Pricier than about 70% 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 lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-618K1
Total capacity16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items16 GB (1 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will this 288-pin DDR5 RDIMM fit the DIMM slots on my SuperMicro X13SEI-F or X13SEI-TF motherboard?

Yes, the module uses the standard 288-pin DDR5 RDIMM form factor designed for the DIMM slots on those SuperMicro motherboards.

What is the correct way to seat this registered ECC module, and what step do builders often miss?

Align the notch on the module with the key in the slot, press down firmly until both side clips click shut, and verify the system detects the full 16 GB at 4800 MT/s in BIOS.

When should I expect to replace this 1Rx8 DDR5 4800 CL40 module in a server workload?

DDR5 RDIMMs have no scheduled replacement interval; they remain in service until a capacity upgrade is needed or a module fails validation testing.

More in Model-Specific Memory Upgrades

Similar items