QNAP sells you more machine; Synology sells you fewer decisions. After two decades of rivalry, that is still the whole matchup.
QNAP's boxes carry more RAM, M.2 slots as standard, PCIe expansion, HDMI out and Intel iGPUs for transcoding — at prices that consistently undercut the equivalent DiskStation. Synology counters with DSM's polish, the strongest first-party app suite in the industry, and a cleaner security history. Power users who will actually use the slots and knobs buy QNAP; households and offices that want an appliance buy Synology and never think about it again. The live table below prices the difference today.
| Bays | QNAP | Synology | Gap |
|---|---|---|---|
| 2-bay | TS-233 2-Bay Desktop NAS Diskless $239.00 | DiskStation DS223 2-Bay Diskless $270.74 | $31.74 |
| 4-bay | TS-464-8G 4-Bay $639.00 | DiskStation DS423 4-Bay Diskless $399.99 | $239.01 |
| 6-bay | TS-664-8G 6-Bay $896.99 | none in stock | — |
| 8-bay | none in stock | DiskStation DS1825+ 8-Bay $1,249.99 | — |
Cheapest in-stock model per brand at each bay count, refreshed every 2 hours. Out-of-stock models are excluded entirely — a "none in stock" cell means exactly that, today.
The pattern holds at every tier where both brands stock a model. At two bays, QNAP's ARM TS-233 undercuts Synology's equivalent while matching its backup-appliance role. At four bays, the TS-464 gives you an Intel N5105 with a transcoding iGPU, 8GB of RAM, dual 2.5GbE, two M.2 slots, HDMI and a PCIe slot — against a DS925+ that counters with ECC memory and DSM but no iGPU, no HDMI, no PCIe, and a higher live price. At six bays the TS-664 repeats the argument against Synology's five-bay DS1525+. The face-off table above puts today's exact numbers on a gap that has persisted, in character if not in dollars, since the 2000s.
QNAP's expansion story deserves specific emphasis because nothing else in the desktop NAS market matches it: the PCIe slot in the TS-464 and TS-664 means 10GbE is a later purchase, not a different chassis. Synology's desktop Plus line offers no PCIe expansion at all — network upgrades mean proprietary modules on select models or living with what shipped. For a buyer planning a five-year ownership arc, that single difference can decide the comparison before software enters the conversation.
DSM is the tidier operating system by a distance most reviewers agree on within minutes: coherent design, curated packages, excellent Photos and Drive apps, Active Backup's licensing-free coverage of PCs and Microsoft 365, and Surveillance Station at the top of its category. Its conservatism is a feature — updates arrive slowly and break nothing, which is exactly what an appliance owner wants.
QTS is busier and more capable in the corners: Virtualization Station runs full VMs, Container Station handles Docker and LXD, HBS 3 syncs to more targets than any Synology tool, HDMI output turns the box into a direct-attached media player, and QuTS hero brings ZFS — inline dedup, compression, self-healing checksums — to models Synology has no answer for. The cost is noise: more menus, more decisions, an app store that needs curation you must supply yourself. QNAP owners tend to know their boxes deeply; Synology owners tend not to need to.
On security, the records differ honestly. QNAP's name is attached to the category's worst ransomware campaigns — Qlocker and Deadbolt hit thousands of internet-exposed QNAP units in 2021-2022 — and although the platform has hardened substantially since, the episode is part of any honest comparison. Synology's record is not spotless but is meaningfully cleaner. The practical mitigation is identical for both: never expose the admin interface, use a VPN, enable auto-updates and snapshots. Administered that way, both platforms are dependable; neglected, QNAP's history says the consequences arrive faster.
Both companies emerged from Taiwan's hardware ecosystem in the early 2000s and spent two decades converging on the same customer from opposite directions. Synology started software-first — DSM's ancestry as a coherent, curated platform goes back to the beginning — and treated hardware as the delivery vehicle. QNAP started as a hardware company that kept adding software, which is still visible today: the spec sheets lead and QTS follows. Twenty years on, each company's origin remains its brand promise, and its blind spot.
The last decade sharpened the split. Synology moved upmarket and toward services: tighter hardware margins, longer product cycles, growing pressure toward first-party drives and cloud subscriptions — the 2025 drive-lock episode and its DSM 7.3 reversal being the visible high-water mark of that instinct. QNAP doubled down on hardware differentiation (2.5GbE early, M.2 everywhere, HDMI, PCIe) while absorbing hard security lessons from the Qlocker and Deadbolt years into a genuinely reformed patch culture. Neither company changed character; both got more like themselves.
Why this history matters to a buyer: it predicts the next five years better than any spec sheet. Synology will keep polishing, keep nudging you toward its ecosystem, and keep charging for restraint. QNAP will keep shipping more hardware than the price implies and expecting you to administer it. The UGREEN-shaped disruption now pressuring both — covered in our UGREEN vs Synology comparison — makes this the most buyer-friendly moment in the rivalry's history, because for the first time both incumbents are the ones being undercut.
Plex and media: QNAP, without argument at current lineups. The TS-464's Quick Sync iGPU hardware-transcodes 4K; Synology's Ryzen Plus models transcode nothing. Direct-play-only households can disregard this; every other media buyer should treat it as the whole decision. Surveillance inverts the verdict just as cleanly: Surveillance Station is the best camera platform on any NAS, QVR Pro is serviceable, and a camera-heavy deployment should buy Synology before comparing anything else.
Virtualization and containers: QNAP on capability, Synology on convenience. Virtualization Station runs full VMs credibly on the 8GB TS-x64 boxes, and QTS's container tooling exposes more of Docker; DSM's Container Manager is smoother for the compose-file basics most homelabs actually run. Backup workloads split the same way — Active Backup's agent-based coverage of PCs and Microsoft 365 is Synology's killer app for small offices, while HBS 3 wins on sync-target breadth for technical users orchestrating multiple destinations.
File service pure and simple — the workload most NAS boxes actually spend their lives on — is a tie, which is worth saying plainly: both platforms serve SMB shares with snapshots reliably and have for two decades. If that is truly all the box will do, buy whichever is cheaper in the live table above and spend the difference on drives.
Buy QNAP if: Plex with real 4K transcoding matters (the TS-464's iGPU against the DS925+'s absence of one is decisive), you want PCIe/M.2/RAM headroom for a box that grows, ZFS via QuTS hero appeals, or you simply want more hardware for less money and are willing to administer it. The TS-464 remains the best all-round mainstream NAS the incumbents make, and the live price above is routinely below its Synology counterpart.
Buy Synology if: the box serves people who will never open its settings, photos and backup workflows should work out of the box, surveillance is on the menu, or a cleaner security history is worth a premium to your organization. There is also a portfolio argument: Synology's ecosystem — expansion units, spare parts, certified accessories, enterprise lines — makes it the safer standardization choice for a business buying several units over years.
And if this comparison feels like choosing between two prices for restraint, note that the market has moved around both incumbents: UGREEN now undercuts QNAP's hardware pricing the way QNAP undercuts Synology's, with newer silicon still. Our UGREEN vs Synology comparison covers that fight, and the hub's decision cards track which brand currently holds each crown at live prices.
A closing rule of thumb that has survived every generation of this rivalry: buy Synology for the people who will use the NAS, buy QNAP for the person who will run it. Households and offices where those are different people lean Synology; homelabs where they are the same person lean QNAP — and the live face-off table above tells you exactly what each answer costs this week.
QNAP gives you more hardware — RAM, M.2, PCIe, HDMI, transcoding iGPUs — for less money at every tier in the live table. Synology gives you DSM: better first-party apps, tighter polish, cleaner security history. Power users lean QNAP; appliance buyers lean Synology. Neither is wrong; they price different priorities.
Yes, with standard discipline. Qlocker and Deadbolt overwhelmingly hit units whose admin interfaces were exposed to the internet. QNAP has since hardened defaults, added security counseling in QTS, and accelerated patching. Behind a router with VPN-only remote access, auto-updates and snapshots, a modern QNAP's practical risk is comparable to any NAS.
It is more capable and less polished. QTS offers full VMs, broader backup targets, HDMI output and (on hero models) ZFS — none of which DSM matches. DSM offers coherence, curation and first-party apps QTS cannot match. Reviewers consistently prefer using DSM and configuring QTS; buyers should decide which activity dominates their ownership.
QNAP, decisively, at current lineups: the TS-464 and TS-664 carry Intel iGPUs that hardware-transcode 4K, while Synology's Ryzen-based Plus models have no iGPU. A direct-play-only household can ignore this; everyone else should treat it as disqualifying for Synology in this matchup.
Synology units historically resell well on the strength of DSM demand, but QNAP's PCIe expandability keeps its mid-range boxes useful longer — a TS-464 can gain 10GbE and NVMe capacity years into ownership. Counting the used-market premium against the upgrade path is roughly a wash; buy for your use, not resale.
If hardware value drives the decision, yes — UGREEN now undercuts QNAP the way QNAP undercuts Synology, with newer CPUs and standard 10GbE on key models. Its software is younger than either incumbent's. See our UGREEN vs Synology comparison and the hub's live decision cards for the current three-way state.