Side-by-Side Comparison
TERRAMASTER F4-425 Pro vs Synology RackStation RS1226RP+
Standardized 5-pillar engineering audit, thermal telemetry, verified longevity metrics, and complete technical specification diff.
▲ DOCUMENTED QUIRKS
Composite Score:
4.3
/ 5.0
High-density 4-bay NAS powered by an efficient 8-core Intel N350 and dual 5GbE, tempered by PCIe 3.0 x1 bandwidth limits on its triple M.2 NVMe slots.
★ Recommended Winner
● HIGHLY RATED
Composite Score:
4.4
/ 5.0
A resilient 2U rackmount NAS pairing redundant power supplies and ECC memory with dedicated M.2 NVMe cache slots and flexible PCIe expansion.
⚖️
Mizex Comparative Audit Verdict
The Synology RackStation RS1226RP+ achieves the higher Mizex Composite Score (4.4 vs 4.3), leading across 3 of 5 engineering pillars. With an advantage in Engineering & Architecture, Build Quality & Materials, Real-World Reliability, it represents the stronger technical recommendation.
5-Pillar Engineering Telemetry
Detailed comparison across standardized normalized 1.0 – 5.0 engineering pillars.
TERRAMASTER F4-425 Pro
Synology RackStation RS1226RP+
Engineering & Architecture
(30%)
Winner: Synology RackStation RS1226RP+ (+0.2)
4.2
4.4
Build Quality & Materials
(20%)
Winner: Synology RackStation RS1226RP+ (+0.1)
4.3
4.4
Thermal, Power & Acoustics
(20%)
Winner: TERRAMASTER F4-425 Pro (+0.1)
4.2
4.1
Real-World Reliability
(20%)
Winner: Synology RackStation RS1226RP+ (+0.3)
4.4
4.7
Buyer Value & Upgrades
(10%)
Tie
4.4
4.4
TERRAMASTER F4-425 Pro: Strengths & Caveats
✔ Advantages
- Efficient 8-core Intel Core 3 N350 processor paired with 16 GB DDR5 4800 MHz memory
- Dual 5GbE Ethernet interfaces provide multi-gigabit throughput without high thermal overhead
- Triple M.2 2280 NVMe slots alongside four SATA bays enable flexible hybrid storage tiering
- Updated TOS 7 operating system based on Linux Kernel 6.12 with BTRFS and T-RAID support
✖ Documented Caveats
- M.2 NVMe slots are constrained to PCIe 3.0 x1 bandwidth
- Lacks native 10GbE connectivity for higher-bandwidth networking environments
- Integrated HDMI video port remains underutilized in native TOS software
Synology RackStation RS1226RP+: Strengths & Caveats
✔ Advantages
- Dual redundant power supplies provide continuous failover protection against power loss
- Dedicated dual M.2 NVMe SSD cache slots accelerate I/O without occupying 3.5-inch drive bays
- Eight hot-swappable SATA bays expandable up to 12 bays with the RX426 unit
- Dual 2.5GbE networking complemented by a PCIe slot supporting 10GbE and 25GbE adapters
✖ Documented Caveats
- Ships with only 4 GB of base memory, necessitating an upgrade for memory-intensive workloads
- PCIe high-speed network interface cards and RX426 expansion chassis require separate purchase
Technical Specification Comparison
Side-by-side spec alignment. Rows highlighted with subtle shading denote differing specifications.
| Specification | TERRAMASTER F4-425 Pro | Synology RackStation RS1226RP+ |
|---|---|---|
| Brand DIFF | TERRAMASTER | Synology |
| Model DIFF | F4-425 Pro | RackStation RS1226RP+ |
| Processor DIFF | Intel Core 3 N350 (8 cores, 8 threads, up to 3.9 GHz, 7W base power) | — |
| Memory DIFF | 16 GB DDR5 4800 MHz SO-DIMM (expandable up to 32 GB) | — |
| Drive Bays DIFF | 4x 3.5"/2.5" SATA 6 Gbps | — |
| M.2 Slots DIFF | 3x M.2 2280 PCIe 3.0 x1 NVMe | — |
| Maximum Storage Capacity DIFF | Up to 144 TB HDD (4x 30 TB) + 24 TB NVMe (3x 8 TB) | — |
| Supported RAID Levels DIFF | Single Disk, JBOD, RAID 0, 1, 5, 6, 10, T-RAID, T-RAID+ | — |
| SSD Cache Support DIFF | Optional SSD Read or Write caching | — |
| Networking DIFF | 2x 5GbE Ethernet | — |
| USB Ports DIFF | 3x USB 3.2 Gen 2 (10 Gbps) Type-A | — |
| Video Interface DIFF | HDMI | — |
| Internal File Systems DIFF | BTRFS, EXT4 | — |
| External File Systems DIFF | NTFS, BTRFS, HFS+, EXT4, EXT3, FAT32 | — |
| Operating System DIFF | TOS 7 (Linux Kernel 6.12.63+) | — |
| Form Factor DIFF | — | 2U Rackmount |
| Cpu Model DIFF | — | AMD Ryzen V1500B |
| Cpu Architecture DIFF | — | 64-bit |
| Cpu Core Count DIFF | — | 4 |
| Cpu Thread Count DIFF | — | 8 |
| Cpu Base Clock DIFF | — | 2.2 GHz |
| Memory Installed DIFF | — | 4 GB DDR4 ECC SODIMM |
| Memory Slots DIFF | — | 2 |
| Memory Max Capacity DIFF | — | 32 GB |
| Drive Bays DIFF | — | 8 x 3.5"/2.5" SATA HDD/SSD |
| Hot Swappable Bays DIFF | — | 1 |
| Max Drive Bays Expanded DIFF | — | 12 |
| Expansion Unit Support DIFF | — | Synology RX426 |
| M2 Nvme Slots DIFF | — | 2 x M.2 2280 NVMe SSD (dedicated cache) |
| Network Interfaces DIFF | — | 2 x 2.5GbE RJ-45 |
| Pcie Expansion DIFF | — | 1 x PCIe slot (10GbE / 25GbE NIC support) |
| Usb Ports DIFF | — | 2 x USB 3.2 Gen 1 Type-A |
| Cooling System DIFF | — | 80 mm system fan |
| Power Supply Type DIFF | — | Dual redundant power supply (RP) |
| Input Voltage DIFF | — | 100–240 V AC, 50/60 Hz |
| Dimensions Mm DIFF | — | 88.3 x 481.9 x 398.4 |
| Operating System DIFF | — | Synology DiskStation Manager (DSM) |
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