For well over three years Samsung has dominated the SATA SSD market with their potent 850 Series SSDs. When first introduced, nothing delivered performance that was even close to what the 850 Series served up. Over time though, the competition has been inching closer, but still no one has been able to snatch the SATA SSD performance crown from Samsung. We didn't think Samsung would offer another SATA SSD beyond the 850 Series, but here it is...the 860 Pro. Samsung designed a new controller to power the 860 Pro. This controller is designated MJX. Samsung's new MJX controller offers many improvements over previous models including expanded system compatibility, a refined ECC algorithm and improved queued TRIM for Linux systems. Powered by Samsung's MJX controller and paired with Samsung's latest 64-layer 2-bit V-NAND technology, the 860 Pro delivers endurance that is up to 8x better than the 850 Pro. Samsung states that the 860 Pro's new feature set assures long-term dependable performance with minimal degradation. Compared to its predecessor, the 850 Pro, the 860 Pro provides up to 25% better-sustained workload performance, along with class-leading sequential read/write speeds of up to 560/530 MB/s.