Synology
Synology DS423+
NAS · $499
86
/ 100
From $499
VS
Asustor Flashstor 12 Pro wins by 2
Asustor
Asustor Flashstor 12 Pro
NAS · $1099
88
/ 100
From $1,099
Specdex verdict
Asustor Flashstor 12 Pro takes it — here’s why.
In our weighted Specdex score, Synology DS423+ lands at 86 and Asustor Flashstor 12 Pro at 88. That puts Asustor Flashstor 12 Pro ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Synology DS423+ if…
- ✓Rich software ecosystem (Synology/QNAP)
- ✓NVMe cache slots on newer models
- ✓Docker/VM support on higher tiers
Pick Asustor Flashstor 12 Pro if…
- ✓Rich software ecosystem (Synology/QNAP)
- ✓NVMe cache slots on newer models
- ✓Docker/VM support on higher tiers
Synology DS423+ 86
vs 88 Asustor Flashstor 12 Pro
Score breakdown
Synology DS423+
86 performance 86
features 86
software 84
value 82
Asustor Flashstor 12 Pro
88 performance 88
features 88
software 86
value 82
Specs side-by-side
| Spec | Synology DS423+ | Asustor Flashstor 12 Pro |
|---|
Synology DS423+
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
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
FAQ: Synology DS423+ vs Asustor Flashstor 12 Pro
Which is better, Synology DS423+ or Asustor Flashstor 12 Pro? +
Asustor Flashstor 12 Pro scores 88 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is Synology DS423+ worth the price? +
At $499, Synology DS423+ delivers a Specdex score of 86 — strongest in performance.
Is Asustor Flashstor 12 Pro worth the price? +
At $1,099, Asustor Flashstor 12 Pro delivers a Specdex score of 88 — strongest in performance.
Does Synology DS423+ or Asustor Flashstor 12 Pro 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.