Synology DS923 NAS vs WD Black SN850X 2TB
Verdict: These products serve fundamentally different purposes—one is a complete 4-bay NAS server and the other is a high-speed NVMe SSD component—making direct comparison inappropriate and limiting confidence to 55. The SN850X excels in raw sequential speeds of 7300/6600MB/s (per WD) for direct-attached use while the DS923 NAS offers Ryzen R1600 processing and caching slots (per Synology) for networked storage. Neither replaces the other without additional hardware.
Synology DS923 NAS lists at $599 while WD Black SN850X 2TB lists at $289 — WD Black SN850X 2TB undercuts Synology DS923 NAS by $310 (107%).
Winner: WD Black SN850X 2TB
Synology DS923 NAS: 6.5/10
WD Black SN850X 2TB: 7.5/10
Spec-by-spec comparison
| Synology DS923 NAS | WD Black SN850X 2TB | |
|---|---|---|
| Release Date | 2022-11 | 2022-07 |
| MSRP | $599 | $289 |
| CPU | AMD Ryzen R1600 | — |
| Storage Type | 4-bay with 2x M.2 NVMe cache slots | 2TB PCIe Gen4 NVMe SSD |
Synology DS923 NAS
What works
- AMD Ryzen R1600 CPU with 4GB DDR4 RAM expandable to 32GB (per Synology specs)
- 2x 1GbE ports and 2x M.2 NVMe slots for SSD caching
- Supports up to 32GB RAM for multi-user NAS workloads
What doesn't
- Only 1GbE networking limits throughput versus 2.5GbE or 10GbE models
- Released 2022-11 so newer Ryzen-based units offer better efficiency
WD Black SN850X 2TB
What works
- Sequential reads up to 7,300MB/s and writes up to 6,600MB/s (per WD specs)
- Game Mode 2.0 for enhanced gaming performance
- PCIe 4.0 interface for high-speed direct storage
What doesn't
- No DRAM cache on some capacities affecting sustained writes
- Requires compatible PCIe 4.0 slot for full speeds
Bottom line
Our pick: WD Black SN850X 2TB.
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