This SSD is consistently outperformed by Intel's 335 Series. Unfortunately, it looks as though Intel is limiting the latter product in what looks like an eventual closing out, which may be because the 335 numbers are so close to the 520 series, nearly identical.
The only good thing I can see about this drive is at 7mm it will fit in a laptop, unfortunately the 730 series uses a lot of power, which leaves me scratching my head as to what Intel was thinking.
I purchased Intel's 330 series, it was underwhelming and disappointing. I replaced it with an Intel 335 series and was very satisfied with it's performance, now only to find it difficult to find a boxed version larger than 180GB [Amazon has it listed, however I view them only one step up from ebay - possibly even regarding computer drives].
Back to the Intel SSD 730. In my opinion, the only thing good about it is Newegg is offering the 240GB version for $120, today only [April 6, 2015], according to it's sales info. www.newegg.com/Product/Product.aspx?Item=20-167-190 I believe is the correct address.
I am very grateful to storagereview providing their data, as it is very interesting and will keep me away from this series, until Intel fixes several issues with speed and power.
NOTE: I apologize, I was thinking of the Intel 730, an entirely different drive.