Live prices for both sides: UGREEN machines, Synology machines and every NAS we track.
This page compares hardware specifications, drive-compatibility posture and complete build cost between UGREEN and Synology at matched bay counts.
It does not judge software quality, ease of use, or which platform is "better" for a given workload - see the scope note near the bottom for exactly what this comparison declines to claim, and why.
| Bays | UGREEN | Synology | Gap |
|---|---|---|---|
| 2-bay | NASync DH2300 2-Bay $224.57 | DiskStation DS223 2-Bay Diskless $261.59 | $37.02 |
| 4-bay | NASync DXP4800 Plus 4-Bay $656.99 | DiskStation DS423 4-Bay Diskless $349.99 | $307.00 |
| 6-bay | NASync DXP6800 Plus 6-Bay $939.15 | none in stock | โ |
| 8-bay | NASync DXP8800 Plus 8-Bay $1,369.99 | DiskStation DS1825+ 8-Bay $1,217.84 | $152.15 |
Cheapest in-stock model per brand at each bay count, refreshed about once a day. Out-of-stock models are excluded entirely โ a "none in stock" cell means exactly that, today.
The DS925+ is the four-bay machine most of the 2025 coverage was written about, and the one where the reversal story matters most. Synology lists 22 hard drives for it and every one is its own, but the Plus tier is precisely the bucket where an unlisted drive still builds a pool. The list is short; the door is open. Synology's posture is measured and registry-backed: a specific list, read on a specific date, with a stated consequence (Unverified in DSM, not a refusal) for anything not on it.
UGREEN publishes no drive-compatibility list for the NASync line that we could find. That is a genuinely different kind of fact from Synology's documented Unverified label - it is an absence, not a restriction, and we are stating the gap rather than inventing a posture to compare against Synology's measured one. NASync bays are specified to take standard 3.5-inch SATA drives; there is simply no vendor registry to check a specific model against the way there is for Synology.
Synology DS925+ compatible drives, measured ยท Synology's drive policy, per series, dated.
Chassis price alone understates either purchase. Below is each brand's cheapest-in-stock 4-bay filled with its best-value drive tier, computed live from today's catalogue - not the two chassis prices alone.
| UGREEN DXP4800 Plus, chassis only | $656.99 |
|---|---|
| Synology DS925+, chassis only | $766.25 |
5 items across 2 listings. In-stock listings only. Anything out of stock when this page loaded is named below rather than silently dropped.
| Item | Qty | Each | Line | |
|---|---|---|---|---|
| DriveWD Red Pro 18TB WD181KFGX (18TB) | x4 | $754.99 | $3019.96 | Buy on Amazon |
| ChassisUGREEN NASync DXP4800 Plus 4-Bay | x1 | $656.99 | $656.99 | Buy on Amazon |
| Basket total | $3676.95 | |||
These are our current tracked prices. Amazon sets the seller and the final price at checkout - verify before you buy. Opening any item starts an Amazon session, and anything you add there is part of the same order - you do not need to come back here between items.
5 items across 2 listings. In-stock listings only. Anything out of stock when this page loaded is named below rather than silently dropped.
| Item | Qty | Each | Line | |
|---|---|---|---|---|
| DriveWD Red Pro 18TB WD181KFGX (18TB) | x4 | $754.99 | $3019.96 | Buy on Amazon |
| ChassisSynology DiskStation DS925+ 4-Bay | x1 | $766.25 | $766.25 | Buy on Amazon |
| Basket total | $3786.21 | |||
These are our current tracked prices. Amazon sets the seller and the final price at checkout - verify before you buy. Opening any item starts an Amazon session, and anything you add there is part of the same order - you do not need to come back here between items.
Both baskets price the same drive-selection method (lowest cost per terabyte among new, CMR-verified, SATA drives) against each chassis's own bay count - see Fill a DXP4800 Plus and Fill a DS925+ for the same figures on their own pages.
Deliberately absent from this page: any claim that one operating system is more polished, easier, or better supported than the other; any transcoding, streaming or throughput claim for either chassis; and any overall "which should you buy" verdict. Those are software-quality and performance judgements, and this site does not make them. What is above is hardware specifications as each vendor states them, each vendor's own documented (or undocumented) drive-compatibility posture, and the complete cost to fill four bays today - three facts, not an opinion.
Take the mainstream 4-bay pair, since both brands stock one. UGREEN's DXP4800 Plus ships a five-core Intel Pentium Gold 8505, 8GB of DDR5 memory expandable to 64GB, two M.2 NVMe slots, and a 10GbE port alongside 2.5GbE. Synology's DS925+ ships a four-core AMD Ryzen V1500B, 4GB of DDR4 ECC memory expandable to 32GB, two M.2 2280 slots (which Synology's own spec sheet documents as usable for cache OR an independent storage pool, not cache-only), and two 2.5GbE ports with no PCIe expansion slot for a faster card.
Two specification facts favor Synology specifically, and are worth stating on their own terms rather than folded into a single scorecard: the DS925+'s memory is ECC (error-correcting), which UGREEN's desktop line does not offer at this bay count, and Synology documents a compatible expansion unit (the DX525) for the DS925+, extending it to 9 total bays - UGREEN's DXP4800 Plus has no vendor-documented expansion path in what we could find.
Every figure above is the manufacturer's own stated specification, not a benchmark result. Neither company's spec sheet publishes a maximum single-drive capacity for either of these two models.
Both brands field models at other bay counts, and the face-off table above this section prices every pairing we track live rather than restating it here as prose that would drift out of date. UGREEN's larger models step up to a 10-core Intel Core i5-1235U with dual 10GbE; Synology's larger DiskStations in this line keep the same Ryzen V1500B platform across 5 and 8 bays, adding PCIe expansion (documented up to a 25GbE card option on the 8-bay DS1825+) rather than a different CPU. Check the live table for which specific models are in stock and at what price today - it changes, which is why this page reads it live rather than typing a number in.
UGREEN's DXP4800 Plus: Intel Pentium Gold 8505, 5 cores. Synology's DS925+: AMD Ryzen V1500B, 4 cores. Both are the manufacturer's own stated CPU model - we do not benchmark either.
Synology's DS925+ ships DDR4 ECC memory. UGREEN's DXP4800 Plus ships DDR5 without ECC, per each vendor's own specification page.
Synology's 2025 DS Plus machines (which include the DS925+) do not block an unlisted hard drive from creating a storage pool - DSM labels it Unverified rather than refusing it, per Synology's own registry. We could not find a published drive-compatibility list for UGREEN's NASync line at all - see the drive-policy section below for what that absence means and does not mean.
See the live build totals below - both are computed from today's catalogue, not estimated.
Not one we could locate. That is different from UGREEN restricting drives - NASync bays are documented to take standard SATA drives - it means there is no vendor list to check a specific model against, unlike Synology's per-machine registry.
Synology documents the DX525 expansion unit for the DS925+, extending it to 9 total bays. We found no vendor-documented expansion unit for the UGREEN DXP4800 Plus.