Product Comparison: Crucial MX300 vs Crucial BX300

General Specifications
MX300 (CT275MX300SSD1)
BX300 (CT120BX300SSD1)
About the Product
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 3 D 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.
Ever wonder why your phone works as soon as you push a button, yet your computer takes forever? The reason is simple: Your phone runs on flash memory technology, while your computer runs on an outdated hard drive. It’s possible – in fact, it’s easy – to get the same near-instant speed you expect from your phone out of your computer. Upgrading to the Crucial BX300 SSD is perhaps the easiest way to get all the speed of a new computer without the price. When we say it’s easy, here’s what we mean.
Key Specs
275 GB
120 GB
Read Speed
530 Mb/s
555 Mb/s
Write Speed
510 Mb/s
510 Mb/s
What customers say about "Key Specs"
Crucial MX300 Solid State Drive
  • Can't beat this for it's speed and capacity at this price.
  • I bought a small capacity 275GB drive because I needed it to run software not store data. I use my old drive in an external drive bay for storage.
  • What a huge speed and performance improvement over the old HDD.. Truly amazed.
  • Since install it’s been an immediate and huge improvement with Read and write speeds 4x faster according to speed tests! Been working great and have no complaints. Would recommend!
  • The read and write speeds are more than satisfying. I am running this as an audio library drive for Kontakt and Maschine. Works excellent. No problems.
  • The only reason I gave this two stars, is that most people wouldn't actually see this performance drop. It's really specific to a large writes.
Crucial BX300 120GB 3D NAND SATA 2.5 Inch Internal SSD (CT120BX300SSD1)
  • FAST and efficient for my Mac mini server. It has become my internal boot drive. Impressive speed improvement from a spinning drive.
  • I've just installed the 120Gb version for my boot up drive on a desktop running (still) Win XP. The difference in speed is amazing. I haven't had it long so I can't speak for what kind of life a(n) SSD has, but I like what I see so far.
  • Read and write speeds are excellent at this price point. Also matches my silver and grey PC build theme very well (after I had removed that blue sticker). Would recommend.
  • Easy to install, works perfectly. It's made it so my 6 year old computer can keep up for a bit more and not bog down every time I have too many tabs open in Firefox or too many programs going at the same time. I'm a gamer and it's worked well for speeding up load times.
  • Crucial SSD drives have comparable speed to Samsung and OWC SSD drives. Their longevity and reliability are outstanding and have they best price to performance ratio of any SSD drive on the market today.
  • Replaced a solid state drive on my Macbook Pro. The difference in performance was not as much as I expected it would be, but it's an improvement. The negative is that the computer will freeze up fairly often, which almost never happened before.
Size & Weight
0.28 in.
0.28 in.
2.76 in.
4.06 in.
4.05 in.
2.76 in.
3.52 oz.
3.53 oz.
Form Factor
Memory Chip Type
Encryption Algorithm
AES 256-bit, TCG Opal, IEEE-1667
Instantly improve system performance, Entrust your files to a drive that lasts, Keep your system cool
Multistep Data Integrity Algorithm, Thermal Monitoring, SLC Write Acceleration, Active Garbage Collection, Trim Support, Self-Monitoring and Reporting Technology (SMART), Error Correction Code (ECC), Device Sleep extreme low power mode (DEVSLP), Includes activation key for Acronis® True Image™ HD software for easy data migration
What customers say about "Features"
Crucial MX300 Solid State Drive
  • This drive is somewhat lighter than the drive it replaced and the form factor is virtually identical.
  • I used it to upgrade an old laptop & the form factor was perfect. It fit the HD compartment exactly as it should.
  • Running it at Sata 3 GB/s & working smoothly so far.
  • These drives utilize Micron 3D-Nand technology and have extremely fast upload/download transfer rates. They are extremely reliable and are priced substantially lower than other manufacturers.
  • Acronis cloning was a bit of a pain. Took too much time to clone but after a 3 hours of troubleshooting I managed to clone my Windows 10 installation successfully.
Crucial BX300 120GB 3D NAND SATA 2.5 Inch Internal SSD (CT120BX300SSD1)
  • I use external RAIDs for all data and dual external backup drives with all but real time backup with Carbon Copy Cloner. From time to time I force boot from each one and they work perfectly albeit slow compared to the Crucial.
  • Installation was easy using Crucial's videos, but note that you need some cloning software to do a direct replacement of another drive. In their video, Crucial directs you to a link that goes to Acronis' True Image software, which I've been using for years and can recommend it
  • Includes a link for the cloning software. Must buy (or own) the external connection in order to clone it. It took about 40 mins to clone 150 GB of data, swapped it out internally, booted perfectly.
  • Good Crucial quality and reliability. Drive connected to my Mini with no issues. Works good like I expected
  • The cloning software worked great and was fast. I may try to use this SDD in a Linux machine and see if I have any better luck.
  • I may not get the full speed benefit of SATA III on my SATA II laptop, but it boots much faster than the old 7200rpm drive.
Warranty / Certifications
Manufacturer Warranty
3 year(s)
3 year(s)
CE, FCC, BSMI, C-Tick, VCCI, Kcc, RoHS, China RoHS, WEEE, TUV, UL
Other Information
42.99 $

Price History

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