Main trade-off
QNAP TS-264-8G-US
Two M.2 drives fill all onboard SSD sockets.
Head-to-head
QNAP TS-264-8G-US vs ASUSTOR AS5402T: QNAP leaves room for a card, ASUSTOR for four M.2 drives
The short answer
Choose TS-264-8G-US when 8 GB of installed RAM or a supported PCIe network upgrade matters. Choose AS5402T when four built-in M.2 sockets are central to the storage plan.
Before you choose
The reasoning and the trade-offs
A two-SSD mirror leaves different expansion room
If the planned SSD pool uses two M.2 drives, TS-264 has no unused onboard M.2 socket left. AS5402T still has two. That difference matters when a later SSD pool or cache is already on the shopping list.
What this is based on
Two planned M.2 drives use 2 of 2 QNAP sockets and 2 of 4 ASUSTOR sockets. This is a physical socket budget, not a guarantee that a chosen RAID or cache layout is supported.
Main trade-off
ASUSTOR Nimbustor 2 Gen2
Reaching an 8 GB starting target requires a compatible RAM upgrade.
QNAP TS-264-8G-US
- Choose it for
- Start with 8 GB of RAM without replacing memory
- Leave a supported PCIe network upgrade available
- Main trade-off
- Two M.2 drives fill all onboard SSD sockets.
ASUSTOR Nimbustor 2 Gen2
- Choose it for
- Install more than two M.2 SSDs inside the NAS
- Reserve spare M.2 sockets after fitting a two-drive SSD mirror
- Main trade-off
- Reaching an 8 GB starting target requires a compatible RAM upgrade.
About this comparison
Compare QNAP TS-264-8G-US with ASUSTOR AS5402T for a two-bay NAS build, including SSD socket planning, installed RAM and a future network card.
Map the intended drives and expansion card before comparing processor names. These are two-SATA-bay NAS units with different ways to grow beyond that common starting point.
Before you choose
How they fit your plans
Count fast sockets for import and backup rotation
A travel SSD, an always-attached backup drive and a second rotating backup drive need three fast USB connections. AS5402T provides three USB Gen2 sockets. TS-264 provides two Gen2 sockets plus slower USB2 connections, so one device needs a swap, a slower port or another verified arrangement. Choose ASUSTOR for the direct three-device routine, or QNAP if two fast attachments already cover the job.
Facts behind this advice
The third QNAP attachment should not be assigned the same interface ceiling as its first two. This is a connection budget, not a prediction of hard-drive copy speed or a guarantee of simultaneous full-rate traffic.
More future sockets may require a combination card on QNAP
If the long-term plan needs both additional M.2 storage and a faster network card, QNAP’s single PCIe slot forces an accessory decision. Two separate cards cannot be installed together. AS5402T already has four M.2 slots, which may satisfy the storage part without an expansion card, but that does not prove a faster Ethernet path. Choose according to the complete supported layout, with the QNAP card’s compatibility verified first.
Facts behind this advice
TS-264 has two onboard M.2 slots and one PCIe Gen3 x2 slot. AS5402T has four onboard M.2 slots. A compatible combination card must be verified rather than inferred from a card family or another NAS model.
Winner by situation
Start with what you need it to do
Fit two hard drives and four M.2 SSDs without an add-in card
AS5402T provides that onboard layout. TS-264 has only two onboard M.2 sockets.
- QNAP TS-264-8G-US
- Not suitable
- ASUSTOR Nimbustor 2 Gen2
- Better fit
Start a planned 8 GB workload immediately
The exact QNAP unit includes 8 GB. AS5402T needs a compatible RAM upgrade to reach that starting target.
- QNAP TS-264-8G-US
- Better fit
- ASUSTOR Nimbustor 2 Gen2
- Depends
Keep an internal 10GbE card option
TS-264 has a supported PCIe upgrade route. AS5402T has no general expansion slot.
- QNAP TS-264-8G-US
- Better fit
- ASUSTOR Nimbustor 2 Gen2
- Not suitable
Build an internal four-hard-drive array
Each enclosure has only two SATA drive bays. Choose a larger chassis if four hard drives are required.
- QNAP TS-264-8G-US
- Not suitable
- ASUSTOR Nimbustor 2 Gen2
- Not suitable
Connect several USB peripherals
AS5402T supplies three USB 3.2 Gen 2 ports against two on TS-264. Check each peripheral's actual compatibility.
- QNAP TS-264-8G-US
- Good
- ASUSTOR Nimbustor 2 Gen2
- Better fit
What matters in practice
The differences that matter
A two-SSD mirror leaves different expansion room
If the planned SSD pool uses two M.2 drives, TS-264 has no unused onboard M.2 socket left. AS5402T still has two. That difference matters when a later SSD pool or cache is already on the shopping list.
How we reached this conclusion
Two planned M.2 drives use 2 of 2 QNAP sockets and 2 of 4 ASUSTOR sockets. This is a physical socket budget, not a guarantee that a chosen RAID or cache layout is supported.
An 8 GB starting requirement changes the first purchase
A workload plan calling for 8 GB of RAM is met by this exact TS-264-8G-US configuration. AS5402T starts at 4 GB, so budget for compatible memory and installation. Neither model offers a higher published 16 GB ceiling.
How we reached this conclusion
The comparison uses the exact 8G QNAP listing and 4 GB ASUSTOR configuration. The stock gap is 8 minus 4, or 4 GB. Both manufacturers publish a 16 GB maximum.
QNAP's upgrade path is also a one-slot budget
A supported 10GbE card gives TS-264 a network path beyond its built-in 2.5GbE ports, but occupies its only general expansion slot. AS5402T cannot take that internal card. Check the exact card and any combined SSD requirements before choosing QNAP for both upgrades.
How we reached this conclusion
QNAP publishes one PCIe Gen 3 x2 slot and optional faster Ethernet through expansion cards. AS5402T has no general PCIe slot. A card allocation is a hardware constraint, not a measured transfer-speed result.
Choice A
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 of RAM without replacing memory
Checked facts
- SATA drive bays: 2 bays
- Built-in M.2 sockets: 2 M.2 2280 NVMe sockets
- Installed and maximum RAM: 8 GB installed, 16 GB maximum
- General expansion slot: 1 PCIe Gen 3 x2 slot
Choice B
ASUSTOR, AS5402T
ASUSTOR Nimbustor 2 Gen2
The chassis has 2-bay storage. Its fastest documented network path is 2.5 Gbps.
- Best matched use
- Install more than two M.2 SSDs inside the NAS
Checked facts
- SATA drive bays: 2 bays
- Built-in M.2 sockets: 4 M.2 2280 NVMe sockets
- Installed and maximum RAM: 4 GB installed, 16 GB maximum
- General expansion slot: No general PCIe expansion slot
Meaningful differences
What changes the fit
| What changes | QNAP TS-264-8G-US | ASUSTOR Nimbustor 2 Gen2 | Why it matters |
|---|---|---|---|
| SATA drive bays | 2 bays | 2 bays | A four-hard-drive internal array is outside both chassis. Extra M.2 sockets do not add positions for 3.5-inch hard drives. |
| Built-in M.2 sockets | 2 M.2 2280 NVMe sockets | 4 M.2 2280 NVMe sockets | AS5402T can hold two additional M.2 drives without adding a card. Check approved SSDs and supported storage modes before buying them. |
| Installed and maximum RAM | 8 GB installed, 16 GB maximum | 4 GB installed, 16 GB maximum | QNAP starts with 4 GB more memory, while both reach the same published ceiling after a compatible upgrade. |
| General expansion slot | 1 PCIe Gen 3 x2 slot | No general PCIe expansion slot | QNAP can accept a supported expansion card. AS5402T has no equivalent slot for a later internal network card. |
| Built-in Ethernet | 2 ports at 2.5GbE each | 2 ports at 2.5GbE each | Both need a compatible switch and client to use more than gigabit speeds. Two ports do not guarantee a 5 Gbps transfer to one client. |
| USB 3.2 Gen 2 ports | 2 ports | 3 ports | AS5402T has one more high-speed USB port for attached peripherals. Port count does not predict simultaneous storage throughput. |
What you give up
Every choice has a cost
If you choose QNAP TS-264-8G-US
- A network expansion card occupies the only general PCIe slot.
If you choose ASUSTOR Nimbustor 2 Gen2
- There is no general PCIe slot for a later internal network card.
Recommendation switch
The decision flips if...
More than two onboard M.2 sockets are mandatory
Choose ASUSTOR Nimbustor 2 Gen2. AS5402T supplies four sockets without occupying a general expansion slot.
A supported internal faster network card is part of the plan
Choose QNAP TS-264-8G-US. TS-264 is the one with a PCIe slot, although the exact card still needs compatibility confirmation.
Four internal SATA drives are required
Choose neither. Both are two-bay chassis. M.2 sockets cannot substitute for hard-drive bays.
What matters in practice
How to make the call
Plan the SSD layout before buying the disks
A pair of SATA hard drives uses all hard-drive bays in either chassis. If the rest of the plan includes two mirrored M.2 SSDs and another pair for a separate purpose, AS5402T has the four onboard sockets to hold them. TS-264 would need a different compatible expansion plan. Verify the operating system's pool and cache rules as well as the physical sockets.
Separate starting RAM from future RAM
The exact QNAP offer is the 8G model, so it already meets an 8 GB starting target. AS5402T includes 4 GB. That makes the memory module, compatibility check and installation part of the ASUSTOR purchase for that target. Both stop at a published 16 GB maximum, so the QNAP stock advantage does not create a larger ultimate ceiling.
Treat faster networking as a complete system
Both have two 2.5GbE ports. QNAP also has a slot for a compatible faster network card, useful when a workstation, switch and storage layout can support that change. The card uses the only general expansion slot. Do not convert port totals or a 10GbE card label into a promised file-transfer speed.
What this comparison cannot tell you
- No matched transfer, Plex transcoding or noise test was available for this pair.
- RAID protects against some drive failures and does not replace a separate backup.
- Physical sockets do not establish that every pool or cache combination is supported.
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 |
|---|---|---|---|
| QNAP TS-264-8G-US |
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| ASUSTOR Nimbustor 2 Gen2 |
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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.
QNAP TS-264-8G-US
Start with 8 GB of RAM without replacing memory
See price & reviews on AmazonASUSTOR Nimbustor 2 Gen2
Install more than two M.2 SSDs inside the NAS
See price & reviews on AmazonLinks open in a new tab.