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Asustor Flashstor 12 Pro Gen2 — All-flash · 12× M.2 NVMe · 10 GbE
Asustor

Asustor Flashstor 12 Pro Gen2

All-flash · 12× M.2 NVMe · 10 GbE

89
/ 100
From $1,599
VS
Asustor Flashstor 12 Pro Gen2 wins by 4
Asustor AS6704T — NAS · $699
Asustor

Asustor AS6704T

NAS · $699

85
/ 100
From $699
Specdex verdict

Asustor Flashstor 12 Pro Gen2 takes it — here’s why.

In our weighted Specdex score, Asustor Flashstor 12 Pro Gen2 lands at 89 and Asustor AS6704T at 85. That puts Asustor Flashstor 12 Pro Gen2 ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Asustor Flashstor 12 Pro Gen2 if…

  • ✓12× M.2 NVMe slots
  • ✓10 GbE built-in
  • ✓Silent — no spinning drives

Pick Asustor AS6704T if…

  • ✓Rich software ecosystem (Synology/QNAP)
  • ✓NVMe cache slots on newer models
  • ✓Docker/VM support on higher tiers
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Software

Asustor AS6704T

Compared on the software sub-score

Asustor AS6704T leads on software (83 vs 80).

Value for money

Asustor AS6704T

Specdex score per dollar at MSRP

Asustor AS6704T more score per dollar ($699 vs $1,599).

Asustor Flashstor 12 Pro Gen2 89
vs
85 Asustor AS6704T

Score breakdown

Asustor Flashstor 12 Pro Gen2
89
hardware 96
software 80
value 86
ease 84
performance 0
features 0
Asustor AS6704T
85
hardware 0
software 83
value 82
ease 0
performance 85
features 85

Specs side-by-side

Asustor Flashstor 12 Pro Gen2 versus Asustor AS6704T — full spec comparison
Spec Asustor Flashstor 12 Pro Gen2 Asustor AS6704T
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
—

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

Asustor AS6704T

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: Asustor Flashstor 12 Pro Gen2 vs Asustor AS6704T

Which is better, Asustor Flashstor 12 Pro Gen2 or Asustor AS6704T? +

Asustor Flashstor 12 Pro Gen2 scores 89 on our weighted rubric — ahead by 4. Your best pick depends on the sub-scores above.

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.

Is Asustor AS6704T worth the price? +

At $699, Asustor AS6704T delivers a Specdex score of 85 — strongest in performance.

Does Asustor Flashstor 12 Pro Gen2 or Asustor AS6704T 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.

Which is better for software, Asustor Flashstor 12 Pro Gen2 or Asustor AS6704T? +

Asustor AS6704T — leads on software (83 vs 80). Compared on the software sub-score.

Which is the better value, Asustor Flashstor 12 Pro Gen2 or Asustor AS6704T? +

Asustor AS6704T — more score per dollar ($699 vs $1,599). Specdex score per dollar at MSRP.