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Micron Blog

A Faster RealSSD™ C400

Like any innovative tech company, we're always searching for ways to make our products better. We've engineered some big read performance gains that will make a noticeable difference for our C400 and m4 SSDs. We're bundling the improvements into our latest firmware release, which is available now for all customers.

Like any firmware release, we built in the usual stability and reliability improvements that our testing team identified over the past months. But the real news is that the new code provides a significant boost in read performance across all capacities. Sequential reads are up by 20% for all drives (85 MB/s increase), putting the C400/m4 over the 500 MB/s mark. Random 4k reads are up, too. And PCMark scores—which we believe are one of the better measures of real-world usage—are up by 15%.

The table below summarizes the basic spec changes.

  Original With New FW  
Sequential READ 415 MB/s 500 MB/s 20% faster
4k Read IOPs 40k 45k 12% faster

Of course, to appreciate these changes, you'll need to be running the SSD on a system that provides a SATA 6 Gb/s connection (since SATA 3 Gb/s systems cap out at less than 300 MB/s).

Micron customers will be notified of the code change (and how to upgrade) through our usual PCN process. If you're a retail customer, you can find instructions to download the latest code on Crucial's website.

Our client SSDs are already a favorite among users who value stability, reliability, and good performance at a great price. This upgrade makes the C400/m4 SSDs an even more compelling choice, and is a great way to thank all of our customers for choosing Micron. Enjoy!

Tags: Performance

Comments

  • Mehmet SUKUROGLU on November 16, 2016

    I owned this product. I downloaded Crucial Storage Executive software from related website. CSE can NOT find firmware update automatically for this product. When I tried to perform firmware update manually it says this is not the correct (or suitable) firmware for this product... I am sure I have done everything correct. Pls check the firmware you publish for this(RealSSD C400). My firmware is 04TH and PN:MTFDDAK256MAM1K12. Linked website shows only one firmware update and it's firmware code is

  • Web Support on November 16, 2016

    Mehmet, Based off the firmware revision on your drive, I can tell you that SSD was not purchased from Micron, but was from a pre-manufactured system from a company like Dell, HP, or Cisco. Since your drive has a custom firmware, you will only be able to update the frimware with any updates we or Crucial can provide, you need to go back to the manufacturer this drive was purchased from, and see if they have any updates available.

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