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 DDR4 RDIMM module with black chips on both sides no heat spreader 288 gold pins

NEMIX RAM

NEMIX RAM 32GB DDR4 2666MHz ECC RDIMM Synology FS6400 memory upgrade

SKU CH-HBQ4-91QHR

32 GB DDR4 2666 MHz ECC registered DIMM validated for Synology FlashStation FS6400 NAS expansion

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 32 GB capacity expands Synology FS6400 storage performance
  • ECC registered design protects data integrity under heavy workloads
  • DDR4 2666 MHz speed matches system specifications exactly
  • 2 V operation reduces power draw in 24/7 NAS environments
  • 288-pin RDIMM form factor ensures direct slot compatibility

Synology FS6400 32GB DDR4 2666MHz ECC RDIMM

This 32GB DDR4 2666MHz ECC registered DIMM is validated for the Synology FlashStation FS6400 NAS. It delivers 32GB of capacity in a single 2Rx4 module running at 1.2V with CL19 latency.

Who this suits and who it does not

IT teams expanding an FS6400 with ECC registered memory for data integrity will find this module a direct fit. Builders needing non-ECC unbuffered DIMMs, higher frequencies or lower latencies should select a different part.

Deciding specification: 288-pin DDR4 ECC registered

The module uses a 288-pin DDR4 RDIMM form factor with ECC and registered buffering. Only systems that accept DDR4 ECC RDIMMs can use it; consumer boards that require unbuffered non-ECC memory will not be compatible.

How it compares

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

Price $189.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $5.94 per GB
Cheaper than about 66% 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 lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC RDIMM Registered Server Memory
Part numberMR21300-324K1
Total capacity32 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology
In the box
Included items32 GB (1 × 32 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Should I pick the single 32 GB stick or a different capacity for my Synology FS6400?

This module is sold as one 32 GB DDR4 2666 MHz ECC RDIMM; add matching sticks to reach the total capacity your FS6400 requires.

What does the 2666 MHz rating deliver once the module is installed in the FS6400?

The stick runs at DDR4 2666 (PC4-21300) with CL19 latency, giving the NAS its rated memory bandwidth for file services and virtualization workloads.

How does the 288-pin RDIMM interface limit what I can do with this memory?

The 288-pin DDR4 RDIMM form factor only fits registered ECC slots in compatible Synology systems; it cannot be used in desktop UDIMM or laptop SO-DIMM sockets.

More in Model-Specific Memory Upgrades

Similar items