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Rectangular silver 2.5 inch SSD with black label and gold connectors

Crucial

Crucial MX300 275GB 2.5" SATA internal SSD CT275MX300SSD1

SKU CH-MSSN-15S11 MPN CT275MX300SSD1

A 2.5 inch SATA solid-state drive holding 275 GB with sequential reads up to 530 MB/s and writes up to 500 MB/s

  • Total capacity275 GB
  • Sequential read speedUp to 530 MB/s
  • Sequential write speedUp to 500 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • Sequential read speed up to 530 MB/s for fast boot and load times
  • Sequential write speed up to 500 MB/s for quick file saves and transfers
  • Random read performance up to 92,000 IOPS for responsive multitasking
  • Random write performance up to 83,000 IOPS for smooth application operation
  • 3D NAND technology increases storage density and power efficiency

Capacity and interface

The Crucial MX300 CT275MX300SSD1 is a 275GB internal solid state drive built for consumer laptops and desktops with a 2.5 inch SATA III interface. It uses Micron 3D NAND memory components to deliver solid-state responsiveness for everyday computing tasks. The 7mm height fits standard drive bays and slim chassis alike.

Sustained load behaviour

Sequential reads reach up to 530 MBps and writes up to 500 MBps on all file types while random performance holds at 92,000 read IOPS and 83,000 write IOPS. Dynamic Write Acceleration maintains faster saves and file transfers during prolonged workloads. The drive operates reliably across a 0°C to 70°C temperature range.

Build quality and daily implications

A 1.5 million hour MTBF rating and over 90x greater energy efficiency than a typical hard drive point to durable operation with minimal heat output. The SATA III connector and standard 2.5 inch dimensions allow direct replacement of mechanical drives without adapters. Acronis True Image HD compatibility on Windows simplifies migration and backup routines.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $78.99
Cheaper than about 79% of the 1,994 comparable items (median $180.49).
Total capacity 275 GB
Lower than about 79% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 530 MB/s
Lower than about 87% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $287.24 per TB
Pricier than about 74% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameCrucial
Product lineMX300
Model nameCT275MX300SSD1
Total capacity275 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 530 MB/s
Sequential write speedUp to 500 MB/s
Random read (4K)Up to 92,000 IOPS
Random write (4K)Up to 83,000 IOPS
Storage
NAND flash type3D NAND
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100 mm
Product weight0.3 lb (0.14 kg)
Shipping weight0.10 kg
Package size133 × 130 × 18 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
More details
Mean time between failures1,500,000 h

Questions about this item

How much power does the MX300 275GB draw compared with a mechanical drive when it runs continuously?

The drive is over 90x more energy efficient than a typical hard drive, so it adds very little heat or power load during all‑day operation.

What connection does my motherboard need to run this CT275MX300SSD1?

A standard SATA III port and a matching SATA power cable from the PSU are all that is required.

Will the 7.00 mm height fit in the same 2.5 in bay I use for my old laptop hard drive?

Yes, the 7.00 mm thickness matches the common 2.5 in form factor used by most notebook HDDs.

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