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
Six green DDR5 RDIMM modules in a row, bare black chips, no heat spreaders, 288 gold pins each

NEMIX RAM

NEMIX RAM DDR5 768GB (6x128GB) 4800MHz CL40 ECC RDIMM Supermicro H13SRH memory upgrade

SKU CH-CPZG-GRK3N

A 768GB DDR5 ECC RDIMM kit of six 128GB modules running at 4800MHz CL40 1.1V, registered for full-capacity stability on Supermicro H13SRH motherboards

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 6X128GB

Show 18 more

Speed 4800MHz

  • 768 GB total capacity from six 128 GB modules for maximum server density
  • DDR5-4800 speed with CL40 latency runs at the board's rated frequency
  • Registered ECC design offloads the controller and corrects single-bit errors automatically
  • 1 V operation matches the Supermicro H13SRH memory controller specification exactly
  • 288-pin RDIMM form factor fits the required server slots without adapters

Exact-match DDR5 upgrade kit

This 768GB kit contains six 128GB DDR5-4800 RDIMMs built to the Supermicro H13SRH motherboard's exact rank, voltage, and timing requirements. Each module is a 2Rx4 registered ECC DIMM operating at 1.1V with CL40 latency. The 288-pin form factor matches the board's memory slots precisely.

Registered ECC population limits

Registered (buffered) architecture offloads the memory controller so every slot can run fully populated at the rated 4800MHz speed. ECC corrects single-bit errors on the fly to prevent silent data corruption and unplanned reboots. Server memory support varies by model, so consult your system manual for approved DIMM population order and maximum supported capacities before installation.

Replaces mixed or partial memory sets

This kit replaces incomplete or mismatched DIMM configurations that force the memory controller to run at reduced speeds or capacities. The jump is worth it when your workload demands the full 768GB at native DDR5-4800 throughput with hardware error correction. It is not for systems that require UDIMM or SODIMM form factors, or for boards that do not support 2Rx4 registered modules at this density.

How it compares

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

Price $21,782.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $28.36 per GB
Pricier than about 80% 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K6
Total capacity768 GB (6 × 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
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items768 GB 6 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Questions about this item

Should I choose the 768GB kit with six 128GB modules or a smaller capacity for my Supermicro H13SRH?

The kit provides 768GB total across six 128GB RDIMMs. Populate all six slots only if your motherboard manual confirms support for that capacity and population order; otherwise install fewer modules following the approved sequence.

What does the DDR5-4800 CL40 rating mean for real-world server throughput?

The modules run at 4800 MT/s with a CAS latency of 40 cycles. Registered buffering and ECC maintain stability at that speed across all populated slots, delivering the bandwidth the memory controller expects without downclocking.

How does the 288-pin RDIMM interface and PC5-38400 standard limit performance?

The 288-pin RDIMM form factor matches the H13SRH slots exactly. The PC5-38400 designation caps the data rate at 4800 MT/s, so the kit cannot exceed that transfer rate even if the platform supports faster DDR5 speeds.

More in Model-Specific Memory Upgrades

Similar items