Main trade-off
TerraMaster F4-425 Plus N150 16GB
The fastest included port is 5GbE, so a 10GbE client link cannot negotiate 10GbE to this chassis.
Head-to-head
The F4-425 Plus includes 5GbE and 16GB memory. The TS-464 provides QTS and a PCIe expansion slot, useful if a supported adapter is part of a defined plan.
Before you choose
F4-425 Plus N150 16GB gives 36TB and QNAP TS-464-8G-US gives 36TB before formatting in this example. Changing chassis does not increase this protected capacity.
What this is based on
Assume every SATA bay contains a supported 12TB disk. Two-bay RAID 1 uses one disk of usable capacity. For three or more drives, RAID 5 usable TB = (drive count minus 1) × 12. This is an illustrative layout, not included storage or a backup.
Main trade-off
The fastest included port is 5GbE, so a 10GbE client link cannot negotiate 10GbE to this chassis.
Main trade-off
The control-rich interface takes careful setup.


Compare F4-425 Plus N150 16GB and TS-464-8G-US by protected storage, included networking and the exact SSD or application layout you need.
Choose faster built-in ports or the QNAP expansion path.
Winner by situation
Using RAID 1 for two disks or RAID 5 for three or more disks, F4-425 Plus N150 16GB gives 36TB and QNAP TS-464-8G-US gives 36TB before formatting in this example. Changing chassis does not increase this protected capacity.
Included port rates are 5GbE and 2.5GbE. Use the 100GB calculation alongside the actual client speed.
TerraMaster F4-425 Plus N150 16GB supplies 16 GB RAM and supports 32 GB. QNAP TS-464-8G-US supplies 8 GB. QNAP’s current exact 8G specification lists SODIMM since January 2024 and a 16GB maximum, while its January 2026 family manual still labels 8G memory non-expandable. The retained ASIN does not establish the supplied physical revision. Confirm that revision with the seller or QNAP before planning an upgrade. Neither document supports more than 16GB. Compare the stated application memory requirement with the supplied configuration before budgeting for an upgrade. RAM capacity alone does not establish application speed.
The F4-425 Plus retains one M.2 position after allocating two SSDs to a mirror. The TS-464 fills both onboard positions with the same pair, so another M.2 device needs a supported expansion route.
What matters in practice
F4-425 Plus N150 16GB gives 36TB and QNAP TS-464-8G-US gives 36TB before formatting in this example. Changing chassis does not increase this protected capacity.
Assume every SATA bay contains a supported 12TB disk. Two-bay RAID 1 uses one disk of usable capacity. For three or more drives, RAID 5 usable TB = (drive count minus 1) × 12. This is an illustrative layout, not included storage or a backup.
The line-rate lower bound is 160 seconds for F4-425 Plus N150 16GB and 320 seconds for QNAP TS-464-8G-US. Real copies take longer. A 1GbE client makes the lower bound 800 seconds for both.
Decimal 100GB × 8 = 800 gigabits. Divide 800 by the fastest included port rate, 5Gbps or 2.5Gbps. Ignore protocol overhead only for this lower-bound calculation. Optional adapters and aggregated ports are excluded.
The F4-425 Plus retains one M.2 position after allocating two SSDs to a mirror. The TS-464 fills both onboard positions with the same pair, so another M.2 device needs a supported expansion route.
F4-425 Plus: 3 minus 2 = 1. TS-464: 2 minus 2 = 0 onboard M.2 positions remaining. Do not count a PCIe card until its compatibility and lane needs are confirmed.

TerraMaster, F4-425 Plus N150 16GB
Four SATA bays, three M.2 slots and 16GB supplied memory make room for a bulk array and SSD-backed applications. Dual 5GbE ports suit an upgraded home or small-office network.

QNAP, TS-464-8G-US
The chassis has 4-bay storage. Its fastest documented network path is 2.5 Gbps.
Meaningful differences
| What changes | TerraMaster F4-425 Plus N150 16GB | QNAP TS-464-8G-US | Why it matters |
|---|---|---|---|
| Fastest included Ethernet port | 5GbE | 2.5GbE | The client, switch and storage must keep up before this port rate helps a transfer. |
| Supplied RAM | 16GB | 8GB | This is the installed memory budget before purchasing upgrade modules. |
| Supported RAM ceiling | 32GB | 16GB in current SODIMM specification, physical revision unconfirmed | QNAP’s current exact 8G specification lists SODIMM since January 2024 and a 16GB maximum, while its January 2026 family manual still labels 8G memory non-expandable. The retained ASIN does not establish the supplied physical revision. Confirm that revision with the seller or QNAP before planning an upgrade. Neither document supports more than 16GB. |
| M.2 storage slots | 3 | 2 | Plan SSD cache and storage pools separately from the SATA archive. |
| Processor | Intel N150 | Intel Celeron N5095 | Media engines, application architecture and concurrency depend on this platform. |
| Software and expansion route | TOS | QTS with PCIe expansion slot | Choose the applications and supported add-ons required for the job. |
What you give up
Recommendation switch
Choose TerraMaster F4-425 Plus N150 16GB. F4-425 Plus includes 5 GbE and three M.2 positions. No network expansion card is needed to obtain that supplied port rate.
Choose QNAP TS-464-8G-US. TS-464 offers QTS and a PCIe expansion path. Verify the required application or adapter against QNAP's compatibility list before making it the deciding feature.
What matters in practice
The F4-425 Plus includes 5GbE and 16GB memory. The TS-464 provides QTS and a PCIe expansion slot, useful if a supported adapter is part of a defined plan.
Both offer four SATA bays. The TerraMaster has three M.2 slots to QNAP’s two, which can matter when a mirrored SSD pool needs another SSD role. Check each slot’s actual bandwidth.
The TS-464 ships with 2.5GbE ports. Any faster-network plan must include a compatible expansion card and its cost. Two ports alone do not double the speed of a normal single client connection.
What the facts say
Useful conclusions from the current NAS devices comparison, followed by the checked facts used to reach them.
Only 8 of 32 models checked match every need here: “Start with four drives” and “Survive one drive failure”.
8 matching models from 32 checkedMatch countThe count uses the current product-to-need assignments for “Start with four drives” and “Survive one drive failure”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| TerraMaster F4-425 Plus N150 16GB |
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| QNAP TS-464-8G-US |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

You need built-in 5GbE and three M.2 positions
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You have a defined QTS or PCIe expansion requirement
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