Main trade-off
Synology DiskStation DS725+
The second Ethernet socket is limited to Gigabit.
Head-to-head
Synology DS725+ vs QNAP TS-264: More supported ECC RAM or a PCIe network upgrade
The short answer
Choose DS725+ when a two-drive DSM system needs ECC memory or a supported memory capacity above 16 GB. Choose the selected TS-264-8G when two native 2.5GbE ports, 8 GB supplied RAM or a supported PCIe network card fit the plan. Both have two SATA bays and two NVMe sockets, so the difference sits in memory and connection options.
Before you choose
The reasoning and the trade-offs
Two Ethernet sockets can have unequal ceilings
DS725+ provides one fast 2.5GbE port and one Gigabit port. Both TS-264 ports are 2.5GbE.
What this is based on
The DS725+ detailed table and rear overview resolve a conflicting marketing sentence about its ports.
Main trade-off
QNAP TS-264-8G-US
The stated memory ceiling is 16 GB.
Synology DiskStation DS725+
- Choose it for
- Use documented ECC memory and a 32 GB supported ceiling
- Keep the DSM and optional DX525 expansion path
- Main trade-off
- The second Ethernet socket is limited to Gigabit.
QNAP TS-264-8G-US
- Choose it for
- Start with 8 GB and two native 2.5GbE ports
- Add a supported 10GbE PCIe adapter
- Main trade-off
- The stated memory ceiling is 16 GB.
About this comparison
Compare DS725+ and TS-264 for two-drive storage, asymmetric Ethernet ports, a 10GbE card and memory beyond 16 GB.
Choose DS725+ when a two-drive DSM system needs ECC memory or a supported memory capacity above 16 GB. Choose the selected TS-264-8G when two native 2.5GbE ports, 8 GB supplied RAM or a supported PCIe network card fit the plan. Both have two SATA bays and two NVMe sockets, so the difference sits in memory and connection options.
Winner by situation
Start with what you need it to do
Use two separate native 2.5GbE links
DS725+ has one Gigabit port.
- Synology DiskStation DS725+
- Caution
- QNAP TS-264-8G-US
- Better fit
Add a supported internal 10GbE card
TS-264 provides the card slot.
- Synology DiskStation DS725+
- Not suitable
- QNAP TS-264-8G-US
- Better fit
Plan a supported 24 GB memory configuration
TS-264 publishes 16 GB maximum.
- Synology DiskStation DS725+
- Better fit
- QNAP TS-264-8G-US
- Not suitable
Start with at least 8 GB without buying RAM
The selected TS-264 variant includes 8 GB.
- Synology DiskStation DS725+
- Caution
- QNAP TS-264-8G-US
- Better fit
What matters in practice
The differences that matter
Two Ethernet sockets can have unequal ceilings
DS725+ provides one fast 2.5GbE port and one Gigabit port. Both TS-264 ports are 2.5GbE.
How we reached this conclusion
The DS725+ detailed table and rear overview resolve a conflicting marketing sentence about its ports.
An intended 10GbE upgrade needs the QNAP slot
TS-264 provides a Gen3 x2 PCIe slot and a documented compatible 10GbE adapter path. DS725+ lists no comparable slot.
How we reached this conclusion
Both original packages remain below 10GbE until additional supported network hardware is considered.
Memory-heavy work reverses the expansion advantage
DS725+ supports 32 GB and TS-264 publishes 16 GB. TS-264 nevertheless starts with twice the supplied RAM.
How we reached this conclusion
A 24 GB target exceeds 16 GB but fits below 32 GB. The selected packages supply 4 GB and 8 GB.
Choice A
Synology, DS725+
Synology DiskStation DS725+
A two-bay DSM system with ECC memory, two NVMe sockets and a separate DX525 expansion path.
- Best matched use
- Use documented ECC memory and a 32 GB supported ceiling
Checked facts
- Internal storage positions: Two SATA and two NVMe
- Native Ethernet: One 2.5GbE and one 1GbE
- Installed memory: 4 GB DDR4 ECC
- Supported memory maximum: 32 GB
Choice B
QNAP, TS-264-8G-US
QNAP TS-264-8G-US
A two-bay NAS with two built-in NVMe slots, dual 2.5GbE and a PCIe slot for supported SSD or network expansion. The selected current 8G configuration supplies 8 GB RAM.
- Best matched use
- Start with 8 GB and two native 2.5GbE ports
Checked facts
- Internal storage positions: Two SATA and two NVMe
- Native Ethernet: Two 2.5GbE
- Installed memory: 8 GB DDR4 in the selected TS-264-8G
- Supported memory maximum: 16 GB
Meaningful differences
What changes the fit
| What changes | Synology DiskStation DS725+ | QNAP TS-264-8G-US | Why it matters |
|---|---|---|---|
| Internal storage positions | Two SATA and two NVMe | Two SATA and two NVMe | Both provide the same connector counts inside the chassis. |
| Native Ethernet | One 2.5GbE and one 1GbE | Two 2.5GbE | A second fast wired segment changes the choice. |
| Installed memory | 4 GB DDR4 ECC | 8 GB DDR4 in the selected TS-264-8G | An 8 GB starting requirement changes the initial basket. |
| Supported memory maximum | 32 GB | 16 GB | A documented 24 GB requirement exceeds one ceiling. |
| General-purpose PCIe slot | None listed | One Gen3 x2 slot | QNAP has the documented add-in network-card path. |
What you give up
Every choice has a cost
If you choose Synology DiskStation DS725+
- The original package supplies only 4 GB of RAM.
If you choose QNAP TS-264-8G-US
- A 10GbE connection requires an extra compatible card.
Recommendation switch
The decision flips if...
I need more than 16 GB supported RAM
Choose Synology DiskStation DS725+. DS725+ publishes a 32 GB ceiling.
I need dual 2.5GbE or a compatible PCIe adapter
Choose QNAP TS-264-8G-US. TS-264 supplies those hardware paths.
I need four SATA drives inside the original chassis
Choose neither. Both are two-bay chassis.
What matters in practice
How to make the call
Two Ethernet sockets can have unequal ceilings
A workstation on one port and a separate 2.5GbE LAN on the other can use matching rated interfaces on TS-264. DS725+ limits one of those physical connections to Gigabit. Plan addressing and network services carefully. Neither port count automatically makes a single-client connection equal to the sum of both rates.
An intended 10GbE upgrade needs the QNAP slot
If the NAS needs an internal 10GbE card later, TS-264 supplies the relevant expansion route. Include the supported card and the client-side network path in the plan. The two NVMe sockets in DS725+ do not substitute for a general-purpose network-card slot. Avoid assuming a USB connector creates an officially supported 10GbE upgrade.
Memory-heavy work reverses the expansion advantage
For a supported application needing 24 GB, DS725+ is the documented capacity fit after a memory upgrade. For an 8 GB starting requirement, TS-264 already includes the required amount while Synology needs more RAM. Confirm the software platform first. RAM capacity arithmetic does not prove a particular container or virtual machine will run acceptably.
What this comparison cannot tell you
- No matched storage, application, transcoding or noise test was performed. DS725+ network claims use the detailed specification table.
What the facts say
What the comparison shows
Useful conclusions from the current NAS devices comparison, followed by the checked facts used to reach them.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Synology DiskStation DS725+ |
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| QNAP TS-264-8G-US |
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Synology DiskStation DS725+
Use documented ECC memory and a 32 GB supported ceiling
See price & reviews on AmazonQNAP TS-264-8G-US
Start with 8 GB and two native 2.5GbE ports
See price & reviews on AmazonLinks open in a new tab.