Synology - DDR4 - module - 16 GB - DIMM 288-pin - 2666 MHz / PC4-21300 - 1.2 V - registered - ECC - for Synology SA3400, FlashStation FS3400, FS6400
183% dearer per GB than the average 16GB DDR4 kit we track.
Specification
| Capacity | 16GB |
| Generation | DDR4 |
| Speed | 2666MHz |
| Form factor | DIMM |
| ECC | ECC |
| Buffered | Buffered |
| For | Server |
| Brand | Synology |
| ASIN | B07V42PB46 |
Price history
Typical price (median) 90-day £87.61 12-month £131.98 12-month low £83.12 All-time low £83.12 (2026-07-17)
Dear for the market Today’s price is 208% above this kit’s typical price for the past year, and it has been cheaper than this for 88% of that year (last on 2 Sep 2026). At £25.37/GB it is dear against the £8.22/GB typical for DDR4 today. Why medians, not averages ›
30-day avg £507.6090-day avg £260.17180-day avg £184.72 (averages are pulled up by price spikes; the medians above are the better guide)
Cheaper per GB in the same spec
Same generation, capacity and form factor as this kit, ranked by £/GB. See all ›
| £/GB | Price | Capacity | Manufacturer | For | Type | Form Factor | ECC / Buffered | Description | |
|---|---|---|---|---|---|---|---|---|---|
 | £3.67best £/GB | £58.72▼ 23% | 16GB (2x8GB) | Glowster | Desktop | DDR4 | DIMM 3200MHz | - | |
 | £4.37 | £69.90▼ 5% | 16GB | Samsung | Server | DDR4 | DIMM 2666MHz | ECC | |
 | £5.31 | £85.00 | 16GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 2133MHz | - | |
 | £5.31 | £85.00 | 16GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 2400MHz | - | |
 | £5.31 | £85.00 | 16GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 2933MHz | - | |
 | £5.31 | £85.00 | 16GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 3200MHz | - |
About this kit
- Synology Memory Expansion 16GB DDR4 F.FS3400
- DDR4 ECC Registered DIMM
- Applied Models: FS3400, SA3400
- D4RD-2666-16G
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