The SSD Review published a review on the Samsung 850 EVO SSD (1TB) ? Differing Series Controllers Compared A quote from the article:

The Samsung 850 EVO is a third generation TLC NAND SSD, second 3D V-NAND product on the market, and the first SSD in the industry to feature 3-bit 3D V-NAND. At first people were weary of TLC NAND, due to the issues it presents. TLC NAND has much lower endurance and slower performance when compared to MLC and SLC. By the numbers, this speaks to a SSD that might be slower and have a lower lifespan than competing products, however, Samsung's TLC products have proven reliable, and after with two generations of planar (2D) TLC NAND products, more people are seeing TLC NAND products as a viable option. Now, Samsung have finally moved on to 3-bit 3D NAND manufacturing following their 2-bit 3D NAND manufacturing process.

The simple truth is that, unless you are using your system for intense media projects, there won't be any visible difference whatsoever in what you see on your PC screen as compared to any other SSD, and, in fact, this might be the ideal consumer SSD.

 Samsung 850 EVO SSD Review (1TB) ? Differing Series Controllers Compared @ The SSD Review