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 DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 ECC RDIMM SuperMicro X13SEW-TF X13SEW-F

SKU CH-E5DN-R0D51

1 TB DDR5-4800 ECC registered server kit of eight 128 GB modules at CL40 and 1.1 V for SuperMicro X13SEW motherboards

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity across 8 matched 128GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • CL40 latency at 1.1V operating voltage
  • Validated for SuperMicro X13SEW-TF and X13SEW-F motherboards

1TB DDR5 ECC Registered Kit

This kit provides one terabyte of DDR5 memory across eight 128GB registered DIMMs. It is built for SuperMicro X13SEW-TF and X13SEW-F motherboards that require registered ECC modules. The kit targets server and workstation administrators expanding memory capacity for virtualisation or database workloads.

Suited for compatible SuperMicro servers.

The modules suit IT teams deploying SuperMicro X13SEW platforms that mandate registered ECC memory. Builders using consumer desktop boards, laptops or any system requiring unbuffered non-ECC DIMMs cannot use this kit. Workstations needing lower-capacity sticks or different form factors should look elsewhere.

DDR5 4800 CL40 288-pin RDIMM spec

The memory runs at DDR5 4800 with a CAS latency of 40 and operates at 1.1V. Each module uses a 4Rx4 organisation on a 288-pin registered DIMM. This specification decides whether the kit matches the motherboard qualified-vendor list.

How it compares

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

Price $29,591.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $29.59 per GB
Pricier than about 84% 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 numberMR38400-744K8
Total capacity1 TB (8 × 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 systemsSupermicro
In the box
Included items1 TB (8 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

My SuperMicro X13SEW-TF board has 13 DDR5 slots — do I need to fill all of them for this 1TB kit to run correctly?

The kit contains eight 128GB modules. Populate the eight slots your CPU and manual specify; the board does not require all 13 slots to be filled for the memory to operate.

Can I keep my existing DDR5 4800 CL40 registered ECC DIMMs and add this 4Rx4 kit without timing conflicts?

All modules must share the same 4800 MT/s speed, 1.10 V voltage and CL40 latency. Mixing different rank architectures such as 4Rx4 with other ranks can prevent the system from training at the rated speed.

After installation, how do I confirm the full 1TB is recognised at DDR5 4800 with ECC active?

Enter the BIOS or run a hardware inventory tool such as dmidecode; it should show eight 128GB RDIMMs at 4800 MT/s, 1.10 V, CL40, with ECC and registered status reported for each module.

More in Model-Specific Memory Upgrades

Similar items