Synology
Synology DS923+
NAS · $599
90
/ 100
From $599
VS
Synology DS923+ wins by 1
Asustor
Asustor Flashstor 12 Pro Gen2
All-flash · 12× M.2 NVMe · 10 GbE
89
/ 100
From $1,599
Specdex verdict
Synology DS923+ takes it — here’s why.
In our weighted Specdex score, Synology DS923+ lands at 90 and Asustor Flashstor 12 Pro Gen2 at 89. That puts Synology DS923+ ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Synology DS923+ if…
- ✓Rich software ecosystem (Synology/QNAP)
- ✓NVMe cache slots on newer models
- ✓Docker/VM support on higher tiers
Pick Asustor Flashstor 12 Pro Gen2 if…
- ✓12× M.2 NVMe slots
- ✓10 GbE built-in
- ✓Silent — no spinning drives
Synology DS923+ 90
vs 89 Asustor Flashstor 12 Pro Gen2
Score breakdown
Synology DS923+
90 performance 90
features 90
software 88
value 82
hardware 0
ease 0
Asustor Flashstor 12 Pro Gen2
89 performance 0
features 0
software 80
value 86
hardware 96
ease 84
Specs side-by-side
| Spec | Synology DS923+ | Asustor Flashstor 12 Pro Gen2 |
|---|---|---|
| CPU | — | Intel Atom x7835RE (8 cores) |
| RAM | — | 16 GB DDR5 (expandable to 64) |
| Bays | — | 12× M.2 NVMe Gen 4 |
| Network | — | 10 GbE × 1 + 2.5 GbE × 2 |
| USB | — | 4× USB 3.2 Gen 2 |
Synology DS923+
Pros
- +Rich software ecosystem (Synology/QNAP)
- +NVMe cache slots on newer models
- +Docker/VM support on higher tiers
Cons
- −Disks rarely included
- −Drive compatibility restrictions on some brands
- −Power draw 24/7
Asustor Flashstor 12 Pro Gen2
Pros
- +12× M.2 NVMe slots
- +10 GbE built-in
- +Silent — no spinning drives
Cons
- −NVMe TB-per-dollar still pricey
- −Heat management critical
- −ADM software trails DSM polish
FAQ: Synology DS923+ vs Asustor Flashstor 12 Pro Gen2
Which is better, Synology DS923+ or Asustor Flashstor 12 Pro Gen2? +
Synology DS923+ scores 90 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.
Is Synology DS923+ worth the price? +
At $599, Synology DS923+ delivers a Specdex score of 90 — strongest in performance.
Is Asustor Flashstor 12 Pro Gen2 worth the price? +
At $1,599, Asustor Flashstor 12 Pro Gen2 delivers a Specdex score of 89 — strongest in hardware.
Does Synology DS923+ or Asustor Flashstor 12 Pro Gen2 last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.