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
Four green DDR4 ECC UDIMM sticks in a row

NEMIX RAM

NEMIX RAM 64GB (4 x 16GB) DDR4 2666MHz PC4-21300 2Rx8 1.2V 288-PIN ECC UDIMM Unbuffered server RAM

SKU CH-Y4NC-7ZSST

64 GB kit of four 16 GB DDR4 ECC unbuffered DIMMs running at 2666 MHz with CAS 19 at 1.2 V

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 64 GB total capacity from four 16 GB modules
  • ECC UDIMM detects and corrects single-bit memory errors
  • DDR4 2666 MHz PC4-21300 speed for server workloads
  • Low 1.2 V operating voltage reduces power draw
  • Unbuffered 288-pin DIMM fits compatible DDR4 server boards

64GB DDR4 2666 ECC kit

This 64GB kit contains four 16GB unbuffered UDIMMs rated at DDR4 2666 PC4-21300 with ECC. It targets servers and workstations that require error-correcting memory in the standard 288-pin form factor.

Practical limits of DDR4 2666 ECC UDIMM

The modules run at 1.2V with a CAS latency of 19 and a 2Rx8 organisation. Unbuffered ECC DIMMs of this speed are limited to platforms whose memory controllers support both ECC and unbuffered operation at 2666 MT/s.

Major OEM chips and 288-pin layout

Chips are sourced from Samsung, Micron or Hynix depending on supply. The standard 288-pin edge connector fits any DDR4 UDIMM slot, and the unbuffered design means no register delay, which suits single-socket boards that do not accept registered modules.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $492.99
Pricier than about 70% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
CAS latency 19
Lower than about 91% of the 439 comparable items (median 40).
Price per GB $7.70 per GB
Pricier than about 54% of the 6,064 comparable items (median $7.25 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
Model namePart#: ME21300-628K4-SM-SYS-5019C-M
Part numberPart#: ME21300-628K4-SM-SYS-5019C-M
Total capacity64 GB (4 × 16 GB)
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

Should I pick the 4 x 16 GB kit or a different capacity?

This kit provides 64 GB total across four 16 GB modules, giving you full capacity in four slots while keeping each module at the standard 1.2 V DDR4 voltage.

What does the 2666 MHz rating mean once the memory is installed?

The modules run at DDR4 2666 with CAS latency 19, delivering PC4-21300 bandwidth when the platform supports that speed and the memory controller is configured for it.

How does the ECC UDIMM interface affect what I can use it with?

These are 288-pin unbuffered ECC DIMMs (2Rx8), so they fit standard DDR4 UDIMM slots that accept ECC; they will not work in registered-only or non-ECC-only platforms.

More in ECC Server RAM

Similar items