Laptop SSD in 2026: compatibility, replacement and the best models

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Replacing or adding an SSD is still the most effective upgrade for a laptop: boot in seconds, apps that open instantly, less noise and better shock resistance than a hard drive. Before buying, you only need to answer one question: which slot does your laptop have?

• Recent laptop with an M.2 2280 slot: get a 1TB PCIe 4.0 NVMe drive such as the WD_BLACK SN7100 (very power efficient) or the Samsung 990 EVO Plus. The Kingston NV3 does the job on a tight budget.
• Ultraportable or Surface with a short M.2 2230 slot: you need a 2230 SSD such as the WD_BLACK SN770M. A 2280 drive will not fit.
• Older laptop with a 2.5-inch bay: a SATA SSD like the Samsung 870 EVO or the Kingston A400 gives it a second life.
• Apple silicon MacBooks and many ultrathin laptops: storage is soldered to the motherboard, so no SSD can be replaced.

In 2026, the NAND memory shortage keeps pushing SSD prices up, and a 1TB 2.5-inch SATA drive is no longer necessarily cheaper than a good 2280 NVMe. To follow the trend, read our article on SSD prices in 2026.

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People often confuse the shape of an SSD with its interface. M.2 is a stick-shaped form factor, not a speed: an M.2 SSD can be SATA (slow) or NVMe (fast).

Same size as a laptop hard drive (7 mm thick for most). The SATA III interface tops out around 550 MB/s, which is still several times faster than a hard drive. It is the right choice for an older laptop without an M.2 slot.

An M.2 stick with two notches (B+M), but still limited to SATA speeds. You find it in some entry-level laptops and older ultraportables. This format is fading out: Kingston, for example, stopped making M.2 SATA SSDs at the end of 2022.

A stick with a single notch (M), connected over PCIe. Expect about 3,500 MB/s on PCIe 3.0 and up to about 7,500 MB/s on PCIe 4.0. Length matters: 2280 (22 x 80 mm) is the most common, while 2242 and 2230 (22 x 30 mm) are used in compact machines. To go further, read our guide to the different types of SSD and our guide to PCIe 4.0 SSDs.

Guides that simply say “check the spec sheet” skip half of the traps. Here are the checks to make, in order:

• The service manual: search for “exact model name + service manual” (Dell, HP, Lenovo and ASUS publish the list of slots and supported formats). It is the most reliable source.
• The system tools: in Windows, Device Manager or System Information shows the model of your current SSD. Look up its part number to find its length (2230, 2242, 2280) and interface.
• The notch: an M.2 slot built only for SATA will not take an NVMe drive, and vice versa, unless the manufacturer says the slot supports both.
• The PCIe generation: a PCIe 4.0 SSD works in a PCIe 3.0 slot, simply capped at PCIe 3.0 speeds. There is no point paying for PCIe 5.0 in a laptop.
• The thickness: in very thin chassis, pick a single-sided SSD (chips on one side only) and never a heatsink version, which will not fit under the cover.
• The length: a 2230 drive can be mounted in a 2280 slot with a suitable extender, but a 2280 drive never fits a 2230 slot.
• The second slot: many gaming laptops and 15 to 16-inch models have a second free M.2 slot. You can then add an SSD without touching Windows.
• Soldered storage: Apple silicon MacBooks and many ultrathin laptops have no slot at all. In that case, the only option is an external USB-C SSD.

We selected six models that cover the three scenarios: M.2 2280, M.2 2230 and 2.5-inch SATA. Speeds, endurance (TBW) and warranties come from the manufacturers’ spec sheets. Each product card below shows current offers, with no fixed price in the text.

This is the form factor of most laptops sold in recent years. All three PCIe 4.0 models below also work in a PCIe 3.0 slot.

The 2230 form factor is used in Microsoft Surface devices, several ultraportables and PC handhelds. It costs noticeably more than a 2280 drive of the same capacity. The Crucial P310 2230 is still a good reference, but Micron has exited the Crucial consumer business (last shipments in February 2026): stock is drying up and prices are often high.

If your laptop still has a 2.5-inch hard drive, a SATA SSD is the most cost-effective upgrade. Check the bay height: both models below are 7 mm thick at most, the laptop standard.

• 512GB: the minimum for Windows 11, office work and a few programs.
• 1TB: the best balance in 2026 for most uses, including a few games.
• 2TB and more: game libraries, video or photo editing.

Keep 10 to 20% free space: an almost full SSD slows down. If your C drive is full, our article C drive full: compress Windows or add an SSD helps you decide. To compare models by capacity, see our guides to 1TB M.2 SSDs, 2TB NVMe SSDs and 4TB SSDs.

A 1TB PCIe 4.0 NVMe SSD is the minimum: recent games often take more than 100GB. The WD_BLACK SN7100 and the Samsung 990 EVO Plus are very good choices. Two laptop-specific tips:

• No heatsink: unlike a desktop, a laptop has no room for an SSD with a heatsink. Reuse the original thermal plate or pad if there is one.
• Use the second slot: on many gaming laptops, adding a second SSD for games avoids cloning Windows.

For a gaming-focused selection, read our guide to the best gaming SSD.

The job itself is simple, but preparation matters more than the screwdriver.

• Back up your files to an external drive or the cloud.
• Write down your BitLocker recovery key: device encryption is often enabled on Windows 11 laptops. You can find the key in your Microsoft account.
• Pick your method: clone the old drive (you need a USB enclosure for M.2 SSDs if your laptop has only one slot) or do a clean Windows install from a USB stick made with Microsoft’s official tool.
• Get the storage driver ready if you reinstall Windows on a recent Intel laptop: if the installer cannot see the SSD, load the Intel RST/VMD driver from the laptop maker’s website.

• Shut the laptop down completely and unplug the charger.
• Remove the bottom cover (screws are sometimes hidden under the rubber feet) with a plastic tool so you do not break the clips.
• Disconnect the internal battery if the manual says so, or disable it in the BIOS when the option exists.
• Touch a metal surface to discharge static electricity.
• Remove the SSD screw, lift the drive out at an angle, then insert the new one at about 30 degrees and secure it with the same screw.
• Put the original thermal plate or pad back, close the cover and power on.

• Check in the BIOS that the SSD is detected.
• Clone or install Windows. The digital licence reactivates automatically on the same laptop.
• Update the SSD firmware with the manufacturer’s software.

No. Most accept an M.2 or 2.5-inch SATA SSD, but Apple silicon MacBooks and many ultrathin laptops have soldered storage that cannot be replaced.

Yes. It is backward compatible and runs at PCIe 3.0 speeds, about 3,500 MB/s.

No, it is too long. The reverse is possible with a suitable extender.

Not necessarily: you can clone the old drive. A clean install is still the healthiest option on a cluttered laptop.

For an M.2 2280 slot, the WD_BLACK SN7100 offers the best balance between speed and battery life. For 2230, it is the WD_BLACK SN770M. For SATA, the Samsung 870 EVO.

To choose a laptop SSD in 2026, remember three steps:

• Identify the slot (M.2 2280, 2230 or 2.5-inch SATA) using the service manual.
• Pick a 1TB PCIe 4.0 NVMe drive if your laptop supports it, without a heatsink.
• Prepare your backup, BitLocker key and migration method before opening the laptop.

SSD prices move a lot with the NAND shortage: the product cards on this page show current offers.