Crucial CT240M500SSD1 240GB SATA SSD

Name: Crucial CT240M500SSD1 240GB SATA SSD
Brand: Crucial
SKU: CT240M500SSD1

Overview

The Crucial CT240M500SSD1 is a 240GB 2.5-inch SATA III solid state drive built around Marvell's controller architecture and Micron's 20nm MLC NAND flash. Sequential read performance reaches 500 MB/s — effectively saturating the SATA 6 Gb/s bus — while sequential writes come in at 250 MB/s. The specification that matters most for everyday responsiveness, however, is the 72,000 IOPS random 4K read figure, which is what drives the near-instantaneous boot times and snappy application launches that make an SSD upgrade feel transformative compared to a spinning hard drive. The drive also integrates TCG Opal 2.0 and IEEE 1667 hardware encryption, enabling full-disk security at the controller level without taxing system resources.

In practice, the M500 240GB is best positioned as a straightforward performance upgrade for aging laptops and desktops that still rely on mechanical storage. Its 7mm height with the included 9.5mm adapter spacer ensures compatibility with virtually any standard 2.5-inch drive bay, and the standard SATA interface means no special motherboard support is required. For users running typical productivity workloads — operating system, office applications, web browsing, and light content work — 240GB provides sufficient headroom for a dedicated boot drive. Power users handling sustained write-heavy workflows should note the asymmetric read/write speeds, and anyone building a new system with an available M.2 NVMe slot would be better served by a newer-generation drive. As a cost-effective SATA SSD for reviving older hardware, however, the M500 remains a straightforward and proven choice.

Key Features

Transformative performance: dramatically faster than a hard drive

Nearly instantaneous boot times

Sequential Read: 500 MB/s | Sequential Write: 250 MB/s | 4KB Random Read: 72,000 IOPS

Ample storage: available in capacities up to terabyte-class

Includes top-level hardware encryption technology

Specifications

Capacity

240GB

Interface

SATA III (6 Gb/s)

Form Factor

2.5-inch, 7mm (9.5mm adapter included)

Sequential Read

500 MB/s

Sequential Write

250 MB/s

Random Read (4K)

72,000 IOPS

Encryption

TCG Opal 2.0, IEEE 1667 Hardware Encryption

Drive Type

Internal Solid State Drive

Model

CT240M500SSD1

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Pros & Cons

👍 Pros

Sequential read speeds of 500 MB/s saturate the SATA III bus, delivering the maximum throughput the interface allows.
72,000 IOPS on random 4K reads translates to noticeably faster application launches and OS boot times compared to any mechanical drive.
Hardware-based AES-256 encryption via TCG Opal 2.0 offloads full-disk encryption from the CPU with zero performance overhead.
The 7mm form factor with an included 9.5mm adapter spacer fits virtually every 2.5-inch laptop and desktop bay without sourcing extra hardware.
240GB capacity hits the practical sweet spot for a dedicated boot and application drive at a low cost-per-gigabyte for SATA SSDs.

👎 Cons

Sequential write speed of 250 MB/s is roughly half the read speed, which becomes noticeable during sustained large file transfers or disk cloning operations.
The SATA III interface caps theoretical bandwidth at 600 MB/s, so this drive cannot benefit from NVMe-class speeds even if your system supports M.2 slots.
At 240GB, users with large game libraries, video projects, or VM images will fill the drive quickly and need supplemental storage.
The M500 uses older 20nm MLC NAND technology, which has been surpassed in endurance and efficiency by newer 3D NAND designs.
No DRAM cache information is prominently disclosed, and the controller architecture is a generation behind current Crucial offerings like the MX500.

Frequently Asked Questions

What interface does the CT240M500SSD1 use, and will it work in my existing laptop or desktop?

It uses a standard SATA III (6 Gb/s) interface in a 2.5-inch form factor. It fits any system with a 2.5-inch SATA bay — most laptops and, with a standard bracket, desktop 3.5-inch bays. The included 9.5mm adapter spacer ensures a snug fit in older laptop drive bays that expect a thicker drive.

What real-world speeds should I expect compared to the quoted sequential numbers?

Sequential reads hit around 500 MB/s and sequential writes around 250 MB/s on the SATA III bus. Random 4K read performance at 72,000 IOPS is where you feel the biggest everyday difference — application launches, OS boot, and file indexing all depend on random I/O far more than sequential throughput.

Does this drive support hardware encryption?

Yes. The M500 supports TCG Opal 2.0 and IEEE 1667 hardware-based encryption, enabling full-disk encryption managed at the controller level without the performance penalty of software encryption. Your system BIOS or enterprise management software must support these standards to enable it.

Is 240GB enough capacity for a primary boot drive?

For a Windows or Linux boot drive with core applications, 240GB is adequate — a typical OS installation plus productivity software and a browser consumes roughly 60–80GB, leaving meaningful headroom. If you store large media libraries or game installs locally, you will want supplemental storage.

What is the endurance rating, and how long can I expect this drive to last under normal use?

Crucial rated the M500 series with a workload tolerance suitable for typical client computing. Under normal desktop or laptop usage patterns — web browsing, office work, light content creation — the drive's NAND endurance comfortably supports years of service.