Components

Choosing an SSD: SATA, NVMe, Capacity and Compatibility

The right SSD fits the machine and the workload. Start with the slot, interface and capacity. A drive with a larger advertised peak speed can still be the wrong purchase if the computer cannot use it.

SATA, NVMe and M.2 are different labels

SATA is an interface used by many 2.5-inch and some M.2 drives. NVMe is a storage protocol commonly used over PCIe. M.2 is a physical format with several lengths and slot types. Kingston's M.2 guide explains why a physically similar drive may not be electrically compatible.

Read the motherboard or laptop manual for each storage slot. Check the supported protocol, length and any restrictions. A specification like M.2 2280 identifies dimensions, not every function of the slot.

Three drive types to compare

A 2.5-inch SATA SSD: useful when the computer has a suitable bay, data connection and power connection. A laptop can also need a bracket or cable that was not fitted in the original configuration.

An M.2 SATA SSD: useful only in a slot that supports SATA. Do not buy it for an NVMe-only slot just because the shape looks right.

An M.2 NVMe SSD: suitable when the slot supports PCIe/NVMe, the drive length fits and the machine supports the intended boot use. Check clearance for any heatsink, especially in a laptop. Kingston's interface comparison gives the broader distinction.

Capacity before peak speed

Add the space used by Windows, apps, your game library or projects, and room for updates and temporary files. Use your current usage as a starting point rather than a universal capacity rule. An editing cache can need much more space than an office document folder.

Before changing drives, make a separate copy of important files and test restoration. Decide whether the installation can be cloned to the new drive or needs a supported reinstall. Save account and encryption recovery information before removing any hardware.

Peak versus sustained performance

A headline sequential speed describes a specific test condition. It does not predict every program launch or long write. Cache behavior, available free space, temperature and the host connection can change the result.

Samsung's 990 EVO Plus data sheet names its test system and explains the use of Intelligent TurboWrite. Read those conditions alongside the write figures. When you often copy large projects, seek a test covering writes long enough to exceed the cache.

Endurance and warranty

Read the exact capacity's warranty. A limit expressed as terabytes written is a warranty condition, not a predicted failure date. Samsung's SSD warranty table gives the 1TB 990 EVO Plus a limit of five years or 600TB written, whichever comes first. Other capacities and models differ, and the full terms still apply.

Compare support, firmware tools and seller legitimacy alongside the endurance number. Do not borrow one model's warranty for another SSD from the same brand.

Laptop and desktop upgrade checks

Find the full computer model, then its service manual. Check mounting screws, drive thickness, heatsink clearance and whether a storage slot shares resources with other ports. A desktop with several slots can have different capabilities in each one.

Use our PC build guide to check the motherboard and PC budget planner to leave room for the complete upgrade. For portable media work, compare video-editing laptops and their storage expansion limits before relying on a later SSD swap.

Make the final choice

Pick a compatible interface and size, enough capacity for the workload, and support terms you understand. Pay for higher speed when there is relevant evidence it helps your task. Keep the separate backup regardless of which SSD you choose.