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Crucial CT256M4SSD2 256GB M4 SATA III 6Gb/s MLC 2.5 Inch Internal SSD

4.6 out of 5 stars 438 customer reviews

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256GB M4
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  • Improve boot up and application load times
  • Withstand extreme shock and vibration
  • SATA 6Gb/s (SATA III), backward compatible to SATA 3Gb/s (SATA II)
  • 3-year limited warranty

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Style Name: 256GB M4

Product information

Technical Details
BrandCrucial
Item Weight77 g
Product Dimensions10.1 x 7 x 0.9 cm
Item model numberCT256M4SSD2
SeriesCT256M4SSD2
ColorGrey
Form Factor2.5
Screen Size2.5 inches
Hard Drive Size256 GB
Hard Drive InterfaceSerial ATA
Wattage3 watts
  
Additional Information
ASINB004W2JL2A
Customer Reviews
4.6 out of 5 stars See all reviews
4.6 out of 5 stars
Best Sellers Rank 42,057 in Computers & Accessories (See top 100)
Shipping Weight118 g
Date First Available11 April 2011
  
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Product description

Style Name:256GB M4

Product Description

The Crucial m4 SSD

Award-winning quality. Award-winning performance.

The award-winning Crucial m4 SSD delivers powerful performance gains for SATA 6Gb/s systems. Designed to empower your system, the Crucial m4 SSD offers faster application load times, faster boot times, and increased durability compared to a traditional hard drive. The results speak for themselves: blazing-fast sequential read speeds of up to 500 MB/s for any file type.

Cutting-edge technology. Quality component testing.

Built with advanced controller technology, Micron proprietary firmware and high-speed synchronous MLC NAND, the Crucial m4 SSD is engineered to deliver consistent, blazing-fast SSD performance. From the extensive research and development that led to its ultimate design, to the hours of testing and validation spent on each NAND component, to rigorous compatibility testing in the Crucial Performance Labs to ensure component functionality, the Crucial m4 SSD is built to last.

Consistently fast speeds. No exceptions and no fine print.

There's a reason the Crucial m4 SSD has garnered numerous international awards since its launch it does what it's supposed to do. No matter what kind of files you are working with on a Crucial SSD, you'll experience high speeds with no drop in performance.

Unlike other SSDs on the market, Crucial SSDs treat all files the same, regardless of whether they are compressed or uncompressed. This is important because the files most people use everyday are videos, mp3s, advanced graphics files and zip files - are compressed files and thus unable to be compressed any further. While many SSDs on the market achieve faster speeds by using file compression, many of the most common file types can not be compressed, resulting in SSDs that often deliver drastically slower speeds than originally advertised. With the advanced technology of a Crucial SSD, however, you will never have this problem!

Crucial quality you can depend on.

Crucial is a trusted name when it comes to SSDs, and that's no coincidence. As a brand of Micron, one of the worlds leading manufacturers of SSDs, we work with our engineers to design, refine, and support our drives. With over 15 years of experience in the memory industry, NAND component testing, and the ongoing development of advanced technology, we continue to innovate without sacrificing what has made us great: high-quality upgrades and outstanding customer service.

Crucial SSDs. Performance you can trust.

More Crucial SSD options

The Crucial v4 SSD delivers substantial SSD performance gains for pre-2011 systems at an affordable price.

The Crucial Adrenaline Solid State Cache Solution

Crucial Adrenaline boosts performance of a Windows 7® PC by up to 8 times1

1 Performance scores after three runs allowing active data to be cached on solid state drive. Scores may vary depending upon benchmark used and system configuration. Test setup: Intel DP67BG motherboard, Seagate Barracuda 750GB hard drive using PCMark Vantage HDD test suite.

Comparison Chart

Product Details
Crucial m4 SSD
Product Details
Crucial v4 SSD
Product Details
Crucial Adrenaline
Interface SATA 6Gb/s (SATA III) SATA 3Gb/s (SATA III) SATA 6Gb/s (SATA III)
Best for most systems bought in 2011 or later most systems bought in pre-2011 people who have lots of data on their hard drive
Platform PC & Mac PC & Mac Windows 7
Max sequential read/write 500MB/s / 260MB/s 230MB/s / 190MB/s 500MB/s / 95MB/s
4k random read/write 45k / 50k 10k / 4k 45k / 20k
Form Factor 2.5' 2.5' 2.5'
Capacity 64GB - 512GB 32GB - 256GB 2.5'
Faster start-up YES YES YES
Faster application loading YES YES YES
Faster data transfer YES YES YES
Increased ability to multitask YES YES YES
Three-year limited warranty YES YES YES
Increased Durability & reliability YES YES NO
Hard drive replacement & upgrade YES YES NO



Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Style: 256GB M4 Verified Purchase
There are loads of tech reviews on this drive, mine is quick and simple.

My late 2008 Core2 Duo 15 inch MacBook Pro was becoming a little tired so I thought I'd freshen it up with an SSD now they are getting a bit better value. I don't need more than than the 256GB already in my machine, so that's what I purchased.

The result - blistering performance! Booting is now 50% quicker and apps like Firefox now appear before even one bounce of the icon on the task bar. Brilliant! Normally slower-to-launch apps are faster too - Photoshop is at 3x faster or more. Faster than my i7 iMac which is 3 years newer and has twice the RAM in fact.

If you are interested in the tech stuff with regard to the swap - I used SuperDuper (free to use for this job) to clone my old hard drive to an external USB drive, popped the drive bay, unscrewed the retaining screw and swapped the retaining pins from the old drive to the new one with a small Torx bit. I used SuperDuper to clone it back the other way and set it to be my boot drive. I also installed the TRIM enabler so that writes are managed properly to an SSD - important for the long term life of the drive. Easy!

If you've an older MacBook* that's getting tired this is a great way to get it feeling spritely again. Totally recommended.

*Just check compatibility on the Crucial website first - if your MacBook is older than mine it's certainly worth making sure; newer ones fitted with a traditional hard drive should be fine.
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Style: 128GB M4 Verified Purchase
Having used Solid State (SSD) based laptops at work and home now could not go back to using a (noticeably slower) magnetic traditional drive based machine!

This Crucial drive was bought some time ago now- so I can vouch that it's been in regular use without any issues (running Windows 8 and 8.1) I would now opt to go for a 240 or 256 GB drive as these have come down in price, but at the time a 128 was both affordable and still large enough to have a reasonable amount of space.

Combine these drives with Microsoft's OneDrive cloud storage service and you have a great way to have a high performance boot drive for key files + many GB's of additional online capacity (and have access to your files from any machine)
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Style: 128GB M4 Verified Purchase
Bought this for OS and programs - I'm not disappointed so far.

Used Sean's SSD guide - [...] to optimise my OS - boot times and program loading is very quick, with Skyrim load screens flashing by.

I would heartily recommend this SSD and with prices dropping, it may be worth waiting a few weeks before purchasing (stock levels permitting!)
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Style: 64GB M4 Verified Purchase
Using the discard option on an ext4 filesystem under ubuntu made this drive so slow it was unusable - booting up took 10 minutes. Remove the discard option from /etc/fstab (and therefore removing trim, so use fstrim utility occasionally) made it super fast.

ThinkPad T42p + SATA UltraBay Disk Caddy.
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Style: 64GB M4 Verified Purchase
worked well
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Style: 64GB M4 Verified Purchase
Crucial M4 64GB is a excellent upgrade, used Paragon Migrate OS to SSD 2.0 to copy Windows 7 partition to the SSD, works perfect and is very easy, no alignment problems, have be running windows 7 for 2 weeks from SSD without a problem, fast and no HD noise.
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Style: 64GB M4 Verified Purchase
Works perfectly. Exactly as described. Would buy again.
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By paul c. on 26 Jun. 2016
Style: 128GB M4 Verified Purchase
great ssd for linux
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Style Name: 256GB M4