Which is faster for everyday use?

The Kingston by a wide margin. Its 6,000MB/s read and 4,000MB/s write dwarf the M4's 500/260MB/s, so boot times, game loads and large file copies are much quicker.

Will the Crucial M4 fit my laptop?

Only if your laptop has a 2.5-inch SATA drive bay. Most laptops made since around 2018 use M.2 slots and need the Kingston instead.

Is the Kingston worth the extra over a cheaper SATA drive?

It is actually cheaper here: $156.50 at Walmart versus $179.99 for the M4, and you get 4x the capacity. The only reason to pay for SATA is a machine with no M.2 slot.

The Kingston is rated for 320TB written and a 5-year limited warranty. Crucial lists a 1.2 million hour MTBF for the M4 but no TBW figure, so the Kingston's endurance is the clearer number.

Can I move the Kingston between devices?

Yes, if each device has an M.2 2280 PCIe slot. It is a standard single-sided drive, so it fits most laptops, desktops and handhelds that accept that size.

Which is better for an old desktop?

The Crucial M4, if the desktop only has 2.5-inch SATA bays. Check for an M.2 slot first; if one exists, the Kingston is the better buy.

Kingston NV3 1TB SSD vs Crucial M4 256GB SSD

Buy the Kingston 1TB SSD for any modern PC, laptop or handheld with an M.2 slot. It is roughly 12x faster on sequential reads, holds 4x the capacity, and costs less: $156.50 at Walmart as of November 8, 2026, versus $179.99 at Newegg for the Crucial M4 256GB. The Crucial M4 only makes sense for an older machine that has a 2.5-inch SATA bay and no M.2 slot.

Today the Kingston NV3 1TB SSD costs $23.49 less at its best price.

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