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Two bare green DDR5 RDIMM modules, 288 pins each, no heat spreader

NEMIX RAM

NEMIX RAM MR51200-328K2 64GB (2×32GB) DDR5-6400 CL52 1.1V ECC RDIMM memory upgrade

SKU CH-AEDA-A8J5X

64 GB DDR5-6400 ECC registered DIMM kit (2 × 32 GB, CL52, 1.1 V) validated for the Gigabyte MZ33-CP1 motherboard

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 64GB 2X32GB

Show 24 more
  • 64GB capacity in a matched 2×32GB kit for full server population
  • DDR5-6400 speed with CL52 latency delivers rated bandwidth out of the box
  • 1V operation reduces power draw while maintaining stability
  • Registered ECC RDIMM architecture corrects single-bit errors and offloads the memory controller
  • Verified compatibility with the GIGABYTE MZ33-CP1 motherboard and 288-pin DDR5 slot requirement

Exact-match DDR5-6400 ECC RDIMM kit

This 64 GB kit contains two 32 GB DDR5-6400 registered ECC modules built to the 288-pin RDIMM form factor. It is validated for the GIGABYTE MZ33-CP1 motherboard and uses 2Rx8 Samsung Micron or Hynix chips running at 1.1 V with CL52 latency.

Registered DDR5 population limits

Registered architecture buffers the command bus so every slot can be populated without signal degradation, but the motherboard still enforces a maximum total capacity and a specific slot-filling order. Exceeding the board's approved DIMM count or ignoring the population sequence will prevent the system from posting at the rated 6400 MT/s speed.

Upgrade from non-ECC or lower-speed DDR5

Replacing unbuffered non-ECC DIMMs or slower registered modules eliminates single-bit error risk and restores full bandwidth when all channels are filled. The jump is worthwhile when the workload demands continuous uptime and the platform's qualified-vendor list includes this exact part number.

How it compares

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

Price $2,475.99
Pricier than about 71% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $38.69 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-328K2
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsGIGABYTE
In the box
Included items64 GB 2 × 32 GB DDR5 6400 MHz PC5-51200 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Should I choose the 2×32 GB kit or a different capacity for the GIGABYTE MZ33-CP1?

The kit provides 64 GB total as two 32 GB modules, matching the board's DDR5-6400 RDIMM slot population rules; consult the motherboard manual for approved DIMM order and maximum supported capacity before buying.

What does the DDR5-6400 rating mean once the modules are installed in the server?

The memory controller will run the RDIMMs at 6400 MT/s with CL52 latency at 1.1 V, delivering the rated PC5-51200 bandwidth when all slots are populated per the board's configuration guide.

How does the 288-pin RDIMM interface and registered ECC design affect real-world operation?

The registered buffer reduces electrical load on the controller so every slot runs at full speed, while ECC corrects single-bit errors on the fly to prevent silent data corruption and unplanned reboots.

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