Best ultimate SSD:
Samsung 970 PRO M.2
Utilizing Samsung’s V-NAND technology, much like the 860 PRO series of SSDs, the 970 PRO M.2 (from $249.99) offers up to 3,500MB/s and 2,700MB/s speeds for read and write, respectively. It’s designed and built for those who desire components for intensive workloads. The 970 PRO is covered by a five-year warranty.
Bottom line: For ultimate performance, you’ll need to look at either PCI or M.2 cards, and Samsung has you covered with the 970 PRO M.2.
One more thing: The only downside to M.2 cards like this one is the price — they’re not cheap, but boy are they fast.