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
Two green DDR3 ECC UDIMM sticks, 240-pin, no heat spreaders

OWC

OWC 16GB (2x8GB) DDR3 1600 ECC UDIMM memory upgrade

SKU CH-3XC4-2WXNW

16 GB dual-channel DDR3-1600 ECC UDIMM kit for Synology DS3615xs, RS3614RPxs, RS3614xs and RS3617xs NAS

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8

Capacity 16GB (2 x 8GB)

  • ECC protection guards data integrity on Synology NAS
  • 16 GB kit (2 x 8 GB) expands capacity for multitasking
  • DDR3 1600 CL11 matches system timing specs
  • 5 V unbuffered design fits DS3615xs RS3614RPxs RS3614xs RS3617xs
  • JEDEC standard and RoHS compliant for warranty-safe upgrade

Synology NAS ECC memory kit

This 16 GB kit contains two 8 GB DDR3 1600 ECC unbuffered DIMMs built for Synology NAS models DS3615xs, RS3614RPxs, RS3614xs and RS3617xs. It targets administrators who need error-correcting memory for data-integrity workloads on those specific units.

240-pin DDR3 1.5 V modules

Each stick is a 240-pin UDIMM rated at PC3-12800 CL11 and operates at the standard 1.5 V. The kit plugs directly into the compatible NAS slots without registration or buffering, freeing the system to use all available DIMM positions for the full 16 GB capacity.

Replaces Synology RAMEC1600DDR3-8GBX2

The kit serves as a direct substitute for the OEM part number listed above, matching JEDEC and RoHS specifications. The upgrade is worthwhile when the NAS currently runs with less memory or non-ECC modules and the workload demands the extra capacity and error correction these DIMMs provide.

How it compares

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

Price $57.99
Cheaper than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $3.62 per GB
Cheaper than about 86% 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 number1E6D32R8016P
Total capacity16 GB (2 × 8 GB)
Product type240-Pin DDR3 ECC UDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsSynology NAS DS3615xs
Synology NAS RS3614RPxs
Synology NAS RS3614xs
Synology NAS RS3617xs

Other versions of this model

5 more in the same range

Questions about this item

What is the CAS latency of these DDR3 1600 modules?

The CAS latency is CL11, matching the PC3-12800 specification for this kit.

How much heat do the unbuffered ECC DIMMs generate during continuous NAS operation?

The modules run at 1.5 V with no heat spreader, so they rely on chassis airflow to stay cool under sustained load.

Which Synology NAS models must I already own for this 240-pin kit to be compatible?

This kit is validated for the DS3615xs, RS3614RPxs, RS3614xs and RS3617xs.

More in Model-Specific Memory Upgrades

Similar items