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Green bare circuit board with black memory chips and gold edge connectors

OWC

OWC 16GB DDR4 2666 CL19 2Rx8 VLP ECC UDIMM 1.2V 288-pin memory upgrade

SKU CH-XEC4-K7CRN

16GB DDR4 2666 ECC VLP UDIMM adds registered-style error correction to compatible Supermicro motherboards

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB capacity lets you run more applications simultaneously
  • DDR4 2666 speed with CL19 latency delivers responsive data access
  • ECC protection detects and corrects single-bit errors automatically
  • 2 V operation reduces power draw and heat output
  • Validated for Supermicro X11SSZ-F, X11SSZ-TLN4F, X11SSW-4TF, X11SSW-F and X11SSW-TF motherboards

Targeted Server Upgrade

This 16 GB DDR4 module is built for specific Supermicro X11 motherboards including the X11SSZ-F and X11SSW series. It delivers ECC protection and unbuffered operation in a single DIMM for straightforward capacity expansion.

Thermals and Power

Low-profile height and 1.2 V operation keep heat output minimal inside dense chassis. JEDEC-standard timings at CL19 ensure stable throughput without raising fan speeds or power draw.

Compatibility Limits

The kit suits owners of the listed Supermicro boards who need ECC UDIMM memory; it will not fit systems requiring registered DIMMs, non-ECC modules, or a different DDR generation. Buyers needing higher densities per slot or faster JEDEC speeds must select alternative modules.

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 X11SSZ-F
Supermicro Motherboard X11SSZ-TLN4F
Supermicro Motherboard X11SSW-4TF
Supermicro Motherboard X11SSW-F
Supermicro Motherboard X11SSW-TF

Questions about this item

How do I install this 288-pin DDR4 VLP ECC UDIMM in a Supermicro X11SSZ-F, and what step is often missed?

Align the notch on the module with the slot key, press down firmly until both side clips click shut, then verify in BIOS that all 16GB are recognised at 2666 MT/s.

What maintenance or replacement will this 16GB DDR4 2666 CL19 module need over its service life?

No routine maintenance is required; keep the slot contacts dust-free and replace the DIMM only if memory diagnostics report correctable or uncorrectable ECC errors.

What limit appears first when this 2Rx8 1.2V DDR4 2666 module runs sustained workloads on a Supermicro X11SSW-F?

The JEDEC-standard 1.2 V operating voltage and CL19 latency define the thermal and timing envelope; sustained loads stay within spec without throttling.

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