Timetec
Timetec DDR4-2666 16GB Replacement for Synology D4ECSO-2666-16G DDR4 ECC Unbuffered SODIMM 2666MHz PC4-21300 260 Pin 1.2V CL19 Dual Rank 2Rx8 Memory RAM Upgrade (D4ECSO-2666-16G_TT)
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
SpecPicks Verdict
SpecPicks classifies Timetec DDR4-2666 16GB Replacement for Synology D4ECSO-2666-16G DDR4… as a solid pick with broad community endorsement in the memory & ram category, based on 163 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Timetec's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.5★ average across customer reviews
- ✓ Compatible with 22 series: DS1522+, DS2422+, DS3622xs+, RS822+, RS822RP+
- ✓ Backed by Timetec's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Replacement for Synology D4ECSO-2666-16G DDR4 ECC Unbuffered SODIMM RAM (DDR4 2666MHz PC4-21300 260 Pin Unbuffered ECC 1.2V CL19 Dual Rank 2Rx8 based 1024x8)
- Compatible with 22 series: DS1522+, DS2422+, DS3622xs+, RS822+, RS822RP+
- Compatible with 21 series: RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+, DVA3221
- Compatible with 20 series: RS820RP+, RS820+;
- Compatible with 19 series: DS2419+, DS2419+II, DS1819+, DVA3219;
- Compatible with 18 series: DS3018xs, DS1618+;
Full Specifications
| NOTE | DO NOT mix ECC and Non-ECC SODIMM RAM together; Guaranteed Lifetime warranty from Purchase Date and Free technical support based on United States |
|---|---|
| Brand | Timetec |
| Weight | 16g |
| Voltage | 1.2 Volts |
| RAM Size | 16 GB |
| Form Factor | SO-DIMM |
| Memory Speed | 2666 MHz |
| Model Number | 7 |
| Number of Pins | 260 |
| Mfr Part Number | 7 |
| Memory Generation | DDR4 |
| Compatible Devices | Laptop, Server |
| Data Transfer Rate | 2666 MHz |
| Memory Form Factor | UDIMM |
Ready to buy?
Timetec DDR4-2666 16GB Replacement for Synology D4ECSO-2666-16G DDR4 ECC Unbuffered SODIMM 2666MHz PC4-21300 260 Pin 1.2V CL19 Dual Rank 2Rx8 Memory RAM Upgrade (D4ECSO-2666-16G_TT) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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