Tech content trusted by users in North America and around the world
6,620 Reviews & Articles | 45,023 News Posts
TRENDING NOW: SanDisk will have 6TB and 8TB SSDs next year using 15nm NAND flash

MyDigitalSSD BP4 240GB mSATA Review - Final Thoughts

MyDigitalSSD BP4 240GB mSATA Review
MDSSD's new BP4 with the latest programming for the Phison S8 is one of the least power consuming products on the market. If you use your notebook or ultrabook on battery, but crave more battery life, you'll want to read this.
By: | mSATA in Storage | Posted: May 31, 2013 1:09 pm
TweakTown Rating: 91%Manufacturer: MyDigitalSSD

Final Thoughts




The MyDigitalSSD BP4 delivers very good sequential read performance until the drive has a significant amount of data on it. At that point a noticeable decrease in performance starts a downward slide that negatively affects the user experience. That isn't the worst part, though. That honor goes to the inconsistent write performance that affects write latency and when you have high latency, you have low IOPS performance.


How did the BulletProof 4 go from such a good 2.5" drive to such a poor mSATA drive? It's all about the channels. The mSATA version is limited to just four channels and the 2.5" utilizes all eight channels. Personally, I think we are seeing the affects of poorly written firmware that isn't optimized for a four channel controller. I can't point to any one area and tell you with certainty that my theory is correct, though. If there are issues with the firmware and efficiency, then reducing the number of channels is an easy way to highlight them.


Going into this review we fully expected the mSATA variant of BP4 to deliver class leading battery life, but we know now that isn't the case. BP4 is really close to LSI SandForce's B02 at this time. Going forward into Haswell, BP4's battery life will look average. SSDs with DEVSLP will have a massive advantage since they'll drop to just .1mW and recover from that nearly nonexistent consumption state in 100ms. The new B02 controller and Plextor's new Marvell based mSATA drive both support DEVSLP. The feature isn't on BP4's product spec list, but it's possible for MDSSD to add the feature later. That still doesn't get around the write latency or the poor performance when the BP4 mSATA has data populating the drive.


The great equalizer though is the price and that's where the BP4 has an advantage over the competition. After researching, we found that every other current gen 256GB class mSATA drive tips the scales north of $200. A few are close to the $200 price point but most, like the SX300, M4, M500 and so on, are closer to $250. The 240GB BP4 mSATA we tested today costs less than $180 at With a $20 to $70 price advantage, the BP4 mSATA 240GB is very attractive for those looking for a bang for the buck mSATA SSD.



PRICING: You can find products similar to this one for sale below.


United States: Find other tech and computer products like this over at Amazon's website.

United Kingdom: Find other tech and computer products like this over at Amazon UK's website.

Australia: Find other tech and computer products like this over at PLE Computer's website.

Canada: Find other tech and computer products like this over at Amazon Canada's website.


Right of Reply

We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.

Related Tags

Further Reading: Read and find more Storage content at our Storage reviews, guides and articles index page.

Do you get our RSS feed? Get It!

Got an opinion on this content? Post a comment below!

Latest News Posts

View More News Posts

Forum Activity

View More Forum Posts

Press Releases

View More Press Releases
Subscribe to our Newsletter