5 of the NAS devices we track publish a 10GbE port in their specification, 4 of them in stock right now. A 10GbE port only helps if the array behind it can produce data faster than 2.5GbE's ceiling of roughly 312 MB/s, which a two-bay mechanical unit almost certainly cannot. If your NAS has a free PCIe slot, adding a card costs far less than the price gap between models.
Prices updated · live figures update every 4-5 hours
Computed from our per-model specification data, and the network column shows what that specification actually says rather than a normalised label.
| Device | Bays | Network (as specified) | Price | |
|---|---|---|---|---|
| UGREEN NASync DXP4800 Plus 4-Bay | 4 | 10GbE + 2.5GbE | $600.00 | Buy |
| Asustor Flashstor 6 Gen2 FS6806X All-Flash | 6 | 10GbE | $1040.99 | Buy |
| UGREEN NASync DXP6800 Pro 6-Bay | 6 | 2x 10GbE | out of stock | - |
| Asustor Lockerstor 6 Gen3 AS6806T 6-Bay | 6 | 10GbE | $1770.99 | Buy |
| UGREEN NASync DXP8800 Plus 8-Bay | 8 | 2x 10GbE | $1369.99 | Buy |
Far cheaper than the price gap between NAS models. Requires a free slot with physical clearance - the constraint is the chassis, not the brand.
| Card | Ports | Interface | Condition | Price | |
|---|---|---|---|---|---|
| ConnectX-3 Mellanox | 1 | SFP+ | New | $27.99 | Buy |
| Intel X520 10Gtekseller claims this chipset | 2 | SFP+ | Refurb | $44.41 | Buy |
| Intel X520 10Gtekseller claims this chipset | 1 | SFP+ | New | $44.99 | Buy |
| Intel X520 Intel | 2 | SFP+ | Refurb | $45.00 | Buy |
| Intel X520 Intel | 2 | SFP+ | Refurb | $45.00 | Buy |
| Intel X520 Intel | 2 | SFP+ | Refurb | $49.99 | Buy |
| Intel X520 10Gtekseller claims this chipset | 2 | SFP+ | New | $51.99 | Buy |
| Intel X520 Intel | 2 | SFP+ | New | $58.99 | Buy |
This is the page where the arithmetic from our 10GbE hub matters most, because a NAS is the one purchase where people most often pay for a port the machine cannot fill.
The ceilings are fixed by the standard: gigabit around 125 megabytes per second, 2.5GbE around 312, 10GbE around 1,250. A NAS saturates the port it is given only if the drives inside it can collectively produce data faster than that ceiling. Whether yours can is a question about your drives and your array layout, and we are not going to invent a figure for it - your drive maker publishes a sustained transfer rate per model, and that number multiplied by the drives that genuinely read in parallel is the comparison to make.
What we can say is the shape. A two-bay NAS with mechanical drives is very unlikely to trouble a 2.5GbE link, let alone a 10GbE one. Wide arrays of many spindles, and all-flash units where the storage is nowhere near the constraint, are where the faster port earns its price.
That is not an argument against 10GbE. It is an argument for buying it in the right order: the array first, the port second. A 10GbE NAS attached to two drives is a slower machine than a 2.5GbE NAS attached to eight, and it costs more.
There are two routes to a 10GbE NAS and they suit different buyers.
Buying a unit that ships with the port is the simple one. The port is integrated, supported by the vendor's own operating system, and there is nothing to install. The table above lists every device in our catalogue whose published specification includes 10GbE, taken from the spec data we maintain per model rather than from a list somebody typed once - so a device whose specification changes cannot silently linger here.
Adding a card is the cheaper route where it is possible, and it is possible more often than people assume. Any NAS running a general-purpose operating system on standard hardware - a repurposed desktop, a used server, a build running TrueNAS or Unraid - takes an ordinary PCIe network card, and the cards on this site cost a fraction of the price difference between NAS models. What determines whether you can is not the brand on the box, it is whether there is a free PCIe slot with physical clearance.
Consumer sealed-chassis NAS units generally cannot be upgraded this way, because there is no slot. Some models expose an expansion slot specifically for a network card, and where a maker documents that we would rather you check the maker's own specification for your model than take a general claim from us - expansion capability varies within a product line, not just between lines.
2.5GbE deserves more attention than it gets on pages like this one, because for a large share of readers it is the correct answer and it is dramatically cheaper.
It runs over the Cat5e already in most walls. It roughly doubles-and-a-half gigabit's ceiling, which is enough to keep up with a modest mechanical array that gigabit was genuinely holding back. Ports are increasingly built into motherboards and inexpensive switches, so the upgrade often costs nothing beyond a switch.
The case for skipping it and going to 10GbE is when the array is already fast enough to exceed 2.5GbE's ceiling - a wide mechanical array or an all-flash unit - or when the workload is large sequential transfers where the difference compounds into real waiting time. Video work off shared storage is the classic example.
If you are between the two, the deciding question is not which is faster. It is whether your storage can tell the difference.
If you have decided the port is worth it, the drives behind it are the rest of the decision, and they are the part this site was built for.
Parallelism is what produces throughput on a mechanical array. More spindles reading at once produce more data at once, which is why bay count matters as much as drive speed for this purpose. Our RAID planner covers how different layouts trade capacity, redundancy and the number of drives that participate in a read.
Drive choice matters less for raw speed than people expect and more for suitability. A NAS array wants CMR drives rather than shingled ones, and it wants drives rated for continuous operation in a multi-drive enclosure. Our NAS drive pages cover which lines qualify and what they cost per terabyte today.
And if the array is all-flash, the network is almost certainly the constraint rather than the storage, which is the one configuration where buying the fastest port available is straightforwardly correct.
Every NAS device we track · NAS drives are what has to feed the port · the RAID planner covers how array layout decides how many drives read at once · the two-machine build connects a NAS to one workstation without a switch.
The table above lists every device in our catalogue whose published specification includes a 10GbE port, computed from our per-model spec data rather than a hand-written list. It is a snapshot of what we track rather than of the whole market, and devices whose specification we have not verified are not included rather than guessed at.
If it has a free PCIe slot, yes - a network card costs a fraction of the price gap between NAS models. That covers repurposed desktops, used servers and anything running TrueNAS, Unraid or Proxmox on standard hardware. Sealed consumer NAS units generally have no slot, though some models expose one specifically for a network card; check your model's own specification rather than assuming from the brand.
For a great many people, yes. It runs over existing Cat5e, costs very little, and its ceiling is around 312 MB/s against gigabit's 125. A two or three drive mechanical array is unlikely to exceed that. The honest test is whether your drives can collectively produce data faster than 312 MB/s - if they cannot, 10GbE changes nothing you will notice.
Only if the network was the constraint. A faster port removes a bottleneck; it does not create speed. If your array cannot produce data faster than the port you already have can carry it, a 10GbE upgrade changes nothing at all, and the money is better spent on more drives or faster ones.
Not if only one machine needs the fast path. A direct cable between the NAS and that one machine gives you the full link with no switch involved, while both keep their existing connections for everything else. Our point-to-point page prices that build. A switch is needed once a second machine wants the fast path too.
Whatever the NAS has, mostly - integrated ports are not a choice. Where you are adding a card, SFP+ with a direct-attach cable is cheaper and cooler for a short run, and RJ45 is worth the extra heat when the link has to travel over structured cabling in your walls.
Specification claims on this page were checked against the pages below on 4 August 2026. Where a widely-repeated figure did not survive that check, we report what the source says now and say so in the text rather than repeating the familiar number.