We didn't spend a lot of time talking about the 3D V-NAND in this article or RAPID Mode. We just published a very detailed V-NAND whitepaper and RAPID Mode was discussed in detail in our initial reviews . The 850 Pro is a complicated product made easy by its performance.

Samsung created a lovely product with the 850 Pro series of SSDs, they are remarkably fast in pretty much any and all tests from our benchmark suite. The drive is continuously in the top 5 of tested SSDs performance wise and to see performance that high with such consistency shows that the SSD is...

Solid reliable SSD drive. I use it to replace an older and smaller, 500GB, Crucial M500 SSD drive. This 850 Pro drive is much faster to boot and run programs.

Degrading performance had me take the step to upgrade the hard drive. Glad I did, faster loading, quicker responses have enabled me to do more work in less time.

Samsung Customer Support will not advance replace a defective drive. Instead, you must ship the defective drive to Samsung, wait for them to test, repair or replace, and return ship. So if you (as I) need reliable, advanced replacement, Samsung is not the company to consider

Makes any PC come to life and boot up 'instantly'. This is very suitable for top range i7 Laptops (or PCs) and works well with fast Vengeange DDR ram. Like turning your PC into a top end Mac Book Pro. Result is top score on Windows performance ranking.

Bought this to replace a Crucial M500 which was hosting a windows 10 VM on my imac. The Crucial disk wasn't giving any problems but I wanted the extra space and what I thought was extended life.

Got two of these a few weeks ago. I have raided them together on my iMac 27" in a thunderbolt enclosure. (StarTech.com S252SMTB3 - Thunderbolt Hard Drive Enclosure with Thunderbolt Cable). I get read speeds over 880mb/s and write speeds averaging around the 850mb/s mark. Amazing drives.

Time will tell, however from past purchases the Samsung's have proven very reliable. This drive comes with system copy software as well as health analysis software.

Installed it in a mid-2012 MBP unibody A1278 with macOS sierra update, 16GB RAM, after the factory HDD crashed. Reinstalled Yosemite on the SSD. EtreCheck went from "very poor" to "excellent". MBP boots up very fast.