Verdict
Ranked #4 of 5Reviewed by Mike Hun·May 18, 2026

TerraMaster F4-424 Pro

Averaged from + undefined
The verdict

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.

TerraMaster F4-424 Pro

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
  • +Compatible with TrueNAS Scale and Unraid for users who want to ditch TOS
  • +Pricing significantly undercuts the Asustor Lockerstor 4 Gen3 and Synology DS923+

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
  • Most users end up running TrueNAS or Unraid instead of TOS — buy this if you'd planned to do that

How it compares

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.

Who this is for

At a glance: self-host enthusiasts who plan to run TrueNAS Scale or Unraid and want the most raw spec per dollar.

Why you’d buy the TerraMaster F4-424 Pro

  • 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.

Why you’d skip it

  • 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.

Rating sources

Our 4.2 score is the average of these published ratings. More about methodology.

Frequently asked questions

Is the TerraMaster F4-424 Pro worth buying?
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.
What is the TerraMaster F4-424 Pro's biggest strength?
Core i3-N305 8-core/8-thread CPU is the highest core count in this round-up
What is the main drawback of the TerraMaster F4-424 Pro?
TOS (TerraMaster Operating System) is the least polished NAS OS in this lineup
What sources back the 4.2/5 rating?
Our 4.2/5 rating is the average of scores from 1 independent 4-bay nas drives review — imaging-resource. Click any source on the product page to read the original review.

How it compares

See all 5
Synology DS923+
#1 · Top Score

Synology DS923+

DSM is materially more polished than QNAP's QTS, Asustor's ADM, UGREEN's UGOS, and TerraMaster's TOS. Loses on raw spec to the QNAP TS-464 (4K transcoding, 2.5 GbE stock), the UGREEN DXP4800 Plus (10 GbE stock), the TerraMaster F4-424 Pro (8-core CPU), and the Asustor Lockerstor 4 Gen3 (5/10 GbE dual). The software gap closes the hardware gap for most non-power-user buyers.

QNAP TS-464
#2

QNAP TS-464

Beats the Synology DS923+ on hardware transcoding and stock 2.5 GbE, but loses on operating system polish. Less raw CPU than the TerraMaster F4-424 Pro (which offers 8 cores vs the TS-464's 4), but the Celeron's iGPU is a meaningful advantage for media work. Cheaper than the Asustor Lockerstor 4 Gen3 and UGREEN DXP4800 Plus while still offering credible 2.5 GbE.

UGREEN NASync DXP4800 Plus
#3

UGREEN NASync DXP4800 Plus

Most modern hardware in this lineup — newer CPU than the Synology DS923+, QNAP TS-464, and TerraMaster F4-424 Pro on launch date. 10 GbE stock undercuts the Asustor Lockerstor 4 Gen3's dual 5/10 GbE setup but at almost half the price. The bet is software: if you're comfortable with a younger OS, this is the most hardware-per-dollar pick.

Asustor Lockerstor 4 Gen3 (AS6804T)
#5

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
4.2/5· $700
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