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Crucial MX300 275GB SATA 2.5" 7mm (with 9.5mm adapter) Internal SSD


  • Brand: Crucial
  • Form Factor: 2.5-inch internal SSD
  • Total Capacity: 275GB
  • Warranty: Limited 3-year
  • Specs: 275GB 2.5-inch internal SSD • SATA 6.0Gb/s • 530 MB/s Read, 500 MB/s Write
  • Series: MX300
  • Product Line: Client SSD
  • Interface: SATA 6.0Gb/s
  • view all product details
    5 stars 23 reviews
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    • £76.79 inc. VAT*
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    Crucial MX300 275GB SATA 2.5" 7mm (with 9.5mm adapter) Internal SSD

    product information

    Amount of available storage on the module. If there are parenthesis shown – for example (2 x 4GB) – it indicates a kit of 2 or more identical modules is used to reach the Total Capacity.
    Product Specifications
    Brand Crucial
    Form Factor 2.5-inch internal SSD
    Total Capacity 275GB
    Warranty Limited 3-year
    Specs 275GB 2.5-inch internal SSD • SATA 6.0Gb/s • 530 MB/s Read, 500 MB/s Write
    Series MX300
    Product Line Client SSD
    Interface SATA 6.0Gb/s
    Device Type Internal Solid State Drive
    Unit Height 7.0mm
    Form Factor 2.5-inch (7mm)
    Package Content Crucial MX300 2.5" (7mm) SSD, 7mm to 9.5mm spacer, Acronis® True Image™ HD certificate
    More information

    Crucial MX300 Solid State Drive

    Product highlights
    • Sequential reads/writes up to 530 / 510 MB/s on all file types1
    • Random reads/writes up to 92k / 83k on all file types1
    • Over 90x more energy efficient than a typical hard drive2
    • Accelerated by Micron® 3D NAND technology
    • Dynamic Write Acceleration delivers faster saves and file transfers
    • More durable than a hard drive – no small moving parts that are prone to failure
    • Best-in-class hardware encryption keeps data safe and secure
    • Exclusive Data Defense guards against data corruption
    • Adaptive Thermal Protection allows for adaptive cooling
    • Power Loss Protection completes write commands even if power is lost4
    • Includes free Acronis® True Image™ HD software for easy data migration
    • Compatible with the Crucial Storage Executive tool for easy drive maintenance
    • 3 year limited warranty

    Instant performance that lasts.

    Increase the speed, durability, and efficiency of your system for years to come with the Crucial MX300 SSD. Boot up in seconds and fly through the most demanding applications with an SSD that fuses the latest 3D NAND flash technology with the proven success of previous MX-series SSDs. Your storage drive isn't just a container, it's the engine that loads and saves everything you do and use. Get more out of your computer by boosting nearly every aspect of performance.

    Instantly improve system performance
    The Crucial MX300 reaches read speeds up to 530 MB/s and write speeds up to 510 MB/s1 on all file types so you can boot up almost instantly, reduce load times, and accelerate demanding applications with ease. Plus, our Dynamic Write Acceleration technology uses an adaptable pool of high-speed, single-level cell flash memory to generate blistering speeds throughout the drive's long life.

    Over 90x more energy efficient than a typical hard drive2
    Extreme Energy Efficiency technology within the Crucial MX300 reduces the amount of active power usage that's consumed by the drive. The Crucial MX300 extends your laptop's battery life by using only 0.075W of power, compared to a typical hard drive which uses 6.8W.

    Entrust your files to a drive that lasts
    With an endurance rating of up to 400TB total bytes written, the Crucial MX300 is engineered with Micron 3D NAND to deliver years of fast performance. The 3D NAND leverages larger NAND cells to improve performance and prolong endurance.

    Keep your system cool
    In addition to lower active power usage, Adaptive Thermal Protection technology dynamically adjusts storage component activity. This helps keep your system cool and minimizes the risk of damage caused by overheating.

    Boost drive performance by up to 10x with Crucial Storage Executive3
    This downloadable tool is easy to use and helps monitor and enhance the performance of your Crucial MX300 – update to the latest firmware and enable the Momentum Cache feature in Storage Executive to instantly improve burst performance. Download the latest version at

    Micron quality — a higher level of reliability.
    As a brand of Micron, one of the largest flash storage manufacturers in the world, the Crucial MX300 is backed by the same quality and innovation that has produced some of the world's most advanced memory and storage technologies. With over a thousand hours of prerelease validation testing and hundreds of SSD qualification tests, the Crucial MX300 has been thoroughly tried, tested, and proven. You'll notice the difference.

    1Based on the published specs of the 525GB model. Speeds based on internal testing. Actual performance may vary.
    2Active average power use comparison based on published specs of the 750GB Crucial MX300 SSD and the 1TB Western Digital® Caviar Blue™ WD10EZEX internal hard drive, which, as of January 2016, is one of the industry’s top-selling internal hard drives. All other capacities of the Crucial MX300 SSD have comparable active average power consumption specs, with the exception of the 2050GB version of the drive, which consumes 0.15W.
    3Validated by testing included in the “Enhance Burst Performance on Micron and Crucial SSDs Using Momentum Cache” whitepaper, available at
    4Refers to data at rest only.

    product reviews

    OID: 47F8D36EA5CA7304
    PR file path: /pwr/96v439cu/inline/02/62/47F8D36EA5CA7304-en_GB-1-reviews.html


    by PowerReviews

    (based on 23 reviews)

    Ratings Distribution

    • 5 Stars



    • 4 Stars



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    • 2 Stars



    • 1 Stars




    of respondents would recommend this to a friend.

    Reviewed by 23 customers

    Displaying reviews 1-10

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    Great product, works really well

    By clive

    from HP9

    Works really well to replace a very slow HDD, computer is transformed now.


    Crucial MX 300 SSD

    By Delboy55

    from Eastbourne

    Verified Reviewer

    Only used in my desktop but top class!!


    Did the Jobbie!

    By Rim the Junner

    from Europe



    Revitalised my Laptop,

    By redzed

    from Selby

    Verified Reviewer

    It was either upgrade to SSD or buy a new Laptop, glad I did this saved me a lot of money
    Had a few problems copying my hard disk and had to use the Crucial support site which was great, but once I'd cracked that it was plain sailing.


    I would buy this produgt again

    By billybhoy7

    from Boston Lincs

    Verified Reviewer

    Great aftersales service with replacement item.


    Very easy installation

    By Woody

    from Yorkshire

    Verified Reviewer

    I installed the SSD in place of a larger hard drive (500 GB HD) I had used only around 150 GB of the original 500 GB HD, I was assured by the "live chat" Crucial advisor that Acronis software would enable me to install a smaller SSD, and it worked like a dream.

    The whole installation took around 30 - 40 mins, including data transfer.

    Don't forget to order a USB adapter in order to transfer data to the replacement drive!


    Excellent Performance Improvements

    By m0sbf

    from London

    Verified Reviewer

    Really useful performance improvements from installing the SSD on my Vostro 1510. Chrome browser now loads 3x to 4x faster than before (3s versus 13s). Much less waiting around for apps to load. Reduced power usage is another bonus.
    Really simple to set up too. Excellent Acronis migration software supplied with the SSD cloned the hard drive in less than an hour.

    (1 of 1 customers found this review helpful)


    Made my macbook feel like new

    By DM93

    from London

    Bought this product after my hard drive failed on my late 2012 macbook pro. Very easy to install and format and has massively improved the performance of my mac, would highly recommend.


    Worthwhile Upgrade

    By Jakecat

    from Newbury

    Verified Reviewer



        Best Uses

        • Laptop Upgrade

        Long overdue upgrade for a couple of laptops. If I'd known how straight forward it was I'd have done it long ago. Free downloadable cloning application makes process easy.



        By Mchouse

        from Nottingham

        Verified Reviewer

        Easy to install. cloning was easy.

        Displaying reviews 1-10

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