MyDigitalSSD BP4 mSATA SSD Review (240GB) – Best Value Available For an SSD To Date


Our analysis today will be conducted with our Asus Z77 Premium Test Bench. Clicking on any pictures or benchmarks will bring up a more easily viewable high resolution image.

In testing, our main objective is to obtain results as pure and as accurate as possible and we want to ensure that no anomalies slip through. Simply put, we want to provide you with the absolute best results the tested hardware can provide. Repetition in testing is standard and, if necessary, we may conduct specific tests in Windows 7 safe mode to ensure the OS has little to no influence on the end result.

In order to validate and confirm our findings, testing is supported by industry accepted benchmark programs. All results are displayed through capture of the actual benchmark for better understanding of the testing process by the reader.

We would like to thank ASUS (P8Z77-V Premium), Intel (Core i7-3770K), Crucial (Ballistix), Corsair (H100) and Be Quiet (PSU/Fans) for supporting the build of our Z77 Premium Test Bench.


The software we will be using for today’s analysis is typical of many of our reviews and consists of ATTO Disk Benchmark, Crystal DiskMark, AS SSD, Anvil Storage Utilities and PCMark Vantage.  We rely on these as they each have a way of supporting one another yet, at the same time, adding a new performance benchmark to the total picture.  Much of the software is free and can be downloaded simply by clicking on the linked title.


The S8 is Phison’s first SATA 3 controller and utilizes four channels in the BP4 SSD.   It is a mid-level controller that balances performance and value.  As we will soon see, IOPS are considerably low in the BP3, however, it is the best value mSATA SSD presently available on the market so, if you need that 240GB of storage, it can be had without feeling like you have just been robbed.


Crystal Disk Info provides some excellent information about the SSD itself to include its health, product information, power on information as well as the characteristics of the SSD. We can see that the MyDigitalSSD BP4  is capable of TRIM as it is not greyed out, much like AAM.

BP4 CDInfo

With respect to SMART attribute information, this is the least we have seen from any SSD to date.


  1. The 60GB model sounds very nice as an Intel SRT drive on my Gigabyte GA-Z77-DS3H.

  2. How come your CrystalDiskMark 3.0 results vary so much from what is advertised on MyDigitalSSD for the 240GB BP4, in particular your 4K write of 74.55 is only 54.36 on MyDigitalSSD?

  3. It still looks like Crucial CT256M4SSD3 256GB m4 makes better choice though. At leaset with amazon UK prices – I see it is more expensive in US, lol.

  4. is the 120gb much slower? what would be an estimate % of performance loss? thanks

  5. Typo. . .”MyDigitalSSD sold there version at a better price than ADATA did the SX300.”

    “sold their” ??

    Any chance you recorded the bytes per sector? if we’re coming from a 512 and this is a 4k, we can’t clone. 🙁

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