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 circuit board with black memory chips, low-profile DDR4 DIMM

OWC

OWC 2E6V42R816GB 16GB DDR4 2666 ECC VLP UDIMM

SKU CH-JJHJ-C3GCQ

A 16 GB DDR4 2666 ECC VLP UDIMM validated for Supermicro X11SSM and X11SSW series boards

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB capacity boosts multitasking headroom
  • DDR4 2666 speed matches system spec
  • ECC protection guards data integrity
  • 2 V low-voltage reduces power draw
  • VLP 288-pin fits Supermicro X11SSM series

Capacity and compatibility

This is a single 16GB DDR4 2666 ECC VLP UDIMM built for Supermicro motherboards X11SSM, X11SSM-F, X11SSW-4TF, X11SSW-F and X11SSW-TF. It targets server and workstation builders who need registered-grade reliability in an unbuffered, very-low-profile form factor.

Sustained-load behaviour

JEDEC-standard timings at CL19 and 1.2V keep the module stable during long compile jobs, virtualisation workloads or database services. The 2Rx8 organisation and absence of a heat spreader suit dense chassis where airflow is managed by the system designer rather than the DIMM itself.

Upgrade scope and limits

It replaces lower-capacity DDR4 ECC UDIMMs in the listed Supermicro platforms when the board’s maximum DIMM count and total memory ceiling allow a 16GB step. The jump is not worthwhile if all slots are already populated or the platform cannot address the additional rank.

How it compares

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

Price $167.99
Cheaper than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $10.50 per GB
Pricier than about 54% 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 nameOWC
Part number2E6V42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC VLP UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro Motherboard X11SSM
Supermicro Motherboard X11SSM-F
Supermicro Motherboard X11SSW-4TF
Supermicro Motherboard X11SSW-F
Supermicro Motherboard X11SSW-TF

Questions about this item

How much heat does the 1.2 V DDR4 2666 module add when it runs continuously?

At 1.2 V the module draws very little power, so it adds only a small amount of heat inside the chassis even under sustained load.

Does my Supermicro X11SSM-F board need anything else for this VLP ECC UDIMM to work?

The board must support DDR4 ECC unbuffered memory and have a free 288-pin slot; no extra hardware is required.

Can I keep my existing DDR4 2666 CL19 sticks and add this 16 GB module?

Yes, provided the other sticks are also DDR4 2666 ECC unbuffered; matching speed, voltage and ECC type avoids timing conflicts.

More in Model-Specific Memory Upgrades

Similar items