Head-to-head breakdowns.
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Seven current NAS boxes, one chart. We pit Synology's DS925+ against UGREEN's DXP4800 Plus and Pro, ASUSTOR's Lockerstor 4 Gen3, TerraMaster's F4-425 Pro, Ubiquiti's eight-bay UNAS Pro 8 and QNAP's TS-h465 preview — comparing price, 10GbE, CPU headroom, NVMe slots and software maturity to find who wins where.
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Synology's four-bay DS925+ is a capable, well-supported NAS that finally plays nicely with third-party drives again after the DSM 7.3 policy reversal — but dropping the 10GbE upgrade path makes it a sideways step from the DS923+ at $639.99.
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UGREEN's four-bay NASync DXP4800 Plus packs desktop-class hardware and a rare 10GbE/2.5GbE combo into a compact box, but the young UGOS Pro platform still trails Synology and QNAP on software polish.
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UGREEN's flagship four-bay NAS pairs a 13th-gen Core i3, 10GbE networking and Gen 4 NVMe slots at a price the big names can't match — as long as you can live with UGOS Pro's thin app catalogue.
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ASUSTOR's four-bay Lockerstor 4 Gen3 pairs a Ryzen Embedded V3C14 with ECC DDR5, dual 10GbE and four PCIe 4.0 NVMe slots, making it a genuinely fast prosumer NAS - provided you don't need the HDMI output or Thunderbolt-style peripherals the Gen 2 hinted at.
TerraMaster's F4-425 Pro pairs an 8-core Intel N350, 16GB of DDR5 and dual 5GbE in a 4-bay chassis, but PCIe-starved M.2 slots and a $799.99 asking price make it a harder sell than the spec sheet suggests.
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Ubiquiti's eight-bay 2U NAS fixes almost every complaint about the original UNAS Pro, adding dual hot-swap PSUs, NVMe caching and 16 GB of RAM for $799 — but its ARM chip and NFS/SMB-only feature set keep it firmly in the file-serving lane.
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QNAP's TS-h465 finally gives the four-bay TS-464 the platform overhaul it needed, with an Intel N150 and DDR5 memory that make QuTS hero's ZFS a realistic option at this tier. Promising, but too much is still unconfirmed to rate it as a finished product.
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Picking cloud storage is no longer about who gives you the most gigabytes for the least money. Sync quality, encryption keys, price per terabyte at real volume and lock-in risk decide the winner — and the answer changes depending on whether you want convenience, cost, privacy or control.
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