Head-to-head · Best 4-Bay NAS Drives

Asustor Lockerstor 4 Gen3 (AS6804T) vs TerraMaster F4-424 Pro

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Asustor Lockerstor 4 Gen3 (AS6804T) comes out ahead by a narrow margin (4.4 vs 4.2). The gap is mostly about prosumers, content creators, and small business buyers who need 10 GbE networking, ECC RAM, and four NVMe slots in one box — read the strengths below before deciding.

Higher ratedRanked #5 in Best 4-Bay NAS Drives

Asustor Lockerstor 4 Gen3 (AS6804T)

4.4

$1,299

The Lockerstor 4 Gen3 is the premium pick — Ryzen V3C14 CPU, ECC DDR5, dual 10 GbE + dual 5 GbE, and four M.2 NVMe slots. It's a different price tier than the rest of this lineup, but if you're building a small-business backup target or a prosumer Plex+everything box, the networking and CPU headroom matter. TechRadar's only real criticism is the price; the hardware is unambiguously top-tier in this segment.

Strengths

— AMD Ryzen V3C14 quad-core with ECC DDR5 RAM — enterprise-grade memory protection
— Dual 5 GbE + Dual 10 GbE ports stock — fastest networking in this round-up
— Four M.2 NVMe slots — most flexible caching/storage tier setup here

Watch-outs

— $1,299 puts it at 2x the Synology DS923+ price tier
— ADM still trails DSM and QTS in polish and third-party app catalog
— Overkill for households or small office use — this is a prosumer/SMB tier

$1,299 · Check Price on Amazon Full review →

Ranked #4 in Best 4-Bay NAS Drives

TerraMaster F4-424 Pro

4.2

$700

The F4-424 Pro is the value-per-spec pick — 8-core CPU and 32 GB DDR5 RAM at $500 is unmatched. The catch is TOS, which most enthusiasts swap out for TrueNAS Scale or Unraid. If you were going to do that anyway, this is the platform; if you want a polished out-of-box experience, the Synology DS923+ or QNAP TS-464 are better matches.

Strengths

— Core i3-N305 8-core/8-thread CPU is the highest core count in this round-up
— 32 GB DDR5 RAM stock — far more than the DS923+ or TS-464 ship with
— Dual 2.5 GbE ports stock

Watch-outs

— TOS (TerraMaster Operating System) is the least polished NAS OS in this lineup
— Build quality is plastic where Asustor and Synology use metal
— TerraMaster's reputation for support and patches is mixed

$700 · Check Price on Amazon Full review →

How they stack up

Asustor Lockerstor 4 Gen3 (AS6804T)

Most expensive pick here — 2x the Synology DS923+ and TerraMaster F4-424 Pro, but the only one with both 5 GbE and 10 GbE networking. ADM is more capable than UGREEN's UGOS Pro and TerraMaster's TOS but still trails DSM and QTS. The QNAP TS-464's iGPU transcoding is the one feature you give up versus the Lockerstor — its server-grade Ryzen lacks an iGPU.

TerraMaster F4-424 Pro

Highest core count and most stock RAM of any pick here. Less polished software than the Synology DS923+, QNAP TS-464, and Asustor Lockerstor 4 Gen3 — most users end up running TrueNAS or Unraid. The UGREEN DXP4800 Plus runs similar new-OS-young-platform energy but ships with proper UGREEN OS rather than an excuse to wipe and reinstall.

Specs side-by-side

Spec	Asustor Lockerstor 4 Gen3 (AS6804T)	TerraMaster F4-424 Pro
Bays	4 (3.5" / 2.5" SATA)	4 (3.5" / 2.5" SATA)
CPU	AMD Ryzen V3C14 (4-core, 3.8 GHz)	Intel Core i3-N305 (8-core, 3.8 GHz turbo)
RAM	16 GB DDR5 ECC	32 GB DDR5 4800
Networking	2x 5 GbE + 2x 10 GbE	2x 2.5 GbE
Chassis	Aluminum	—
OS	ADM (Asustor Data Master)	TOS (or TrueNAS/Unraid)
M.2 NVMe Slots	4x slots	2x slots
Video Output	HDMI 2.1	HDMI 2.0 (4K 60)

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