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Crucial CT128M4SSD2 128GB M4 SATA III 6Gb/s MLC 2.5 Inch Internal SSD

4.6 out of 5 stars 433 customer reviews

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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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Product Information

Technical Details
Item Weight141 g
Product Dimensions1.9 x 13 x 13 cm
Item model numberCT128M4SSD2
SeriesCT128M4SSD2 M4
Form Factor2.5
Screen Size2.5 inches
Hard Drive Size128 GB
Additional Information
Best Sellers Rank 36,397 in Computers (See top 100)
Shipping Weight118 g
Date First Available11 April 2011


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Product Description

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

Manufacturer's Description

Continuing the tradition of our award-winning solid-state drives, the Crucial m4 offers mobile and desktop users scorching-fast read and write speeds, groundbreaking SATA SSD computing, and unparalleled performance for the dollar.

Latest and greatest
Designed for client computing, the Crucial m4 SSD delivers faster boot and application load times for mobile and desktop users alike. Low power, lightweight, and durable, it empowers high-speed synchronous MLC NAND, advanced controller technology, optimized NAND management, and the second-generation SATA 6Gb/s interface. Together, that technology dramatically improves data transfers for bandwidth-demanding applications.

Memory Experts
Delivering on the highest quality based upon Micron’s leading-edge NAND media, the Crucial brand of SSDs has long been synonymous with reliability and high performance. And because we’re part of Micron, the m4 was bred and built entirely in-house. So you can rest assured you’ll get one of the highest quality products available—from the company that knows memory.

Why an SSD?
SSDs provide many benefits over traditional hard drives. You’ll enjoy reduced power consumption, less heat generation. Because they have no moving parts, SSDs are quiet, more lightweight, and they’re rugged and reliable even in the most demanding operating environments or temperature extremes.

Guaranteed Compatible
Crucial m4 series employ a standard hard drive interface and dimensions, so it is an easy storage upgrade for most notebooks. We guarantee compatibility.

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Customer Reviews

Top Customer Reviews

Size: 128GB
I picked up one of these a few days ago to complement a newer Sandy Bridge setup. For no reason I could ever figure out, my boot times were terrible with the motherboard (an Asus P8P67 Pro) using a conventional HD - on the order of 3 minutes from cold until the PC was responsive. Connected to a SATA-3 controller, this SSD reduced my boot time to around 35 seconds, and, once the desktop appears, the PC is fully responsive to whatever you want to do. It sounds obvious, but the main thing that differentiates SSDs from conventional HDs is this "snappiness" factor - seek times are completely flat, thus, the only delay is actually transferring data off the drive to RAM for CPU operations (and this drive is capable of >400 megabyte per second bursts). The drive is also completely silent, and it's slightly weird not to hear the usual HD ticking & clicking. You may also need a 3.5" drive bay adapter; physically, the drive is about 50% bigger than a credit card and very light - alternatively, I have seen these drives held in place by double-sided tape - with no moving parts, you can pretty much put them anywhere the data and power cables will stretch. Also, a side effect of the "solid state" part of the drive is that it is largely unaffected by any movements or accidental drops - anything that doesn't destroy the casing will leave the drive completely unaffected - the interior is largely the same as a USB flash drive, but with larger capacity chips and a small controller.

I initially had some trouble with the drive (some stuttering and pausing) after installing Windows7 then Intel's RST drivers (the drive is connected to an Intel ICH9 port), and decided that a re-format would be my best option to completely get rid of the Intel drivers.
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Size: 64GB
This works very well with my MacBook Pro (15 inch early 2011). However it is necessary to install a firmware update (see instructions below) in order for the SSD to work. Once installed I noticed a dramatic speed improvement. Did a fresh install of Mountain Lion and it's like a new laptop!

Instructions for MacBook Pro (early 2011):

1) Backup your files to an external hard drive with Time Machine.

2) Go to the Crucial website and download the latest firmware (as of writing version 000F). This consists of a .iso and a .pdf guide.

3) Burn the iso to a black CD or DVD using Disk Utility. (The USB option did NOT work for me!). There's plenty of guides/videos on how to burn an .iso if you search the web.

4) Two options at this point: a) Create a bootable OS X install USB so that you can install an operating system on the SSD once it's installed or b) use your Time Machine backup to copy your files to your new SSD. I'll follow option a).

5) Insert the firmware DVD/CD into your Macbook and shut it down. Open it up and remove your current hard drive. Replace it with the SSD and screw everything back in place (again there's plenty of excellent videos online if you're unsure...)

6) Turn on your MacBook. I didn't have to press anything. After about 30 seconds the firmware updater presented itself. You'll be prompted for a 'yes' or 'no'. Type 'yes' and hit enter. After another minute or so the firmware will be updated.

7) Hold the power button to switch off your MacBook. Insert your OS X install USB stick. Power up your MacBook while holding the option key. Select the OS X installer.

8) Once you've booted into the USB installer you'll be presented with a menu. Select Disk Utility.
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3 Comments 48 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: 128GB
I use my PC mainly for gaming (racing/simulator), photo processing, video creation, working on documents, entertainment (music and videos) and internet browsing.
Before the Crucial M4, my PC configuration (based on a P55 chipset) looked something like this: Windows 7 64-bit, Processor: i5-760 (@ 2.8 Ghz), 8 GB RAM, 2xGTX 460 (in SLI), 1 TB HDD.

My choice for the HDD (spinning at 5400 rpm) wasn't the wisest and I could see how much it affected my system's overall performance. Adding a SSD-HDD was really the only way I could maximise the potential of my system.

I've been watching the evolution of the SSDs from the the past couple of years. Apart from the prices, (earlier) firmware issues kept me from investing in a SSD-HDD.
However, as the performance of the SSDs had started to become more stable (compared to earlier), I thought it was the right moment to start looking for something to upgrade my system with.

Since the SSD will be used as a system drive (OS+programs and the current game that I'm playing), a 120/128 GB SSD-HDD was my target.
My criteria for selection were:
1. Performance on SATA III (6 Gbps) - although my system supports only SATA II, I wanted something that was 'future-proof'
2. Performance on SATA II (3 Gbps) - this was a critical point for selection
3. Reliability - many 'performance oriented' SSDs have the reliability of a leaking boat. I wanted something that had a proven track-record for reliability
4. Performance per $
5. Cost per GB

It took me almost two weeks to gather enough information about all the SSDs in the market and check if they met my criteria.
Many SSDs failed to meet criterion #2, which shortened my list to about 5 names.
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14 Comments 88 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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