The Samsung 850 EVO series first hit the market in 2014, and we've already had one update to increase density to 2TB. The combination of 4 TB of storage, 98,000/90,000 read/write IOPS and 540/530 MB/s of throughput may make this the best SATA SSD on the market. Samsung is one of the few companies that specs queue depth 1 random performance (as noted in the table). On paper, the new 4TB delivers the same performance as the previous high capacity drives, although we found slightly higher performance in our synthetic testing.
I cant believe we finally have 4TB SSDs on the market now for us regular users! That price is a bit steep, but in the conclusion they theorize they will be cheaper by Black Friday, which i think will be about when I get one.