Samsung 870 EVO 1TB SATA SSD vs SanDisk Optimus GX PRO 850X NVMe SSD

Buy the Samsung 870 EVO if your machine has a 2.5-inch SATA bay and you want a proven, widely reviewed drive with strong endurance and easy migration software. Buy the SanDisk Optimus GX PRO 850X if you have an M.2 PCIe Gen4 slot and want far faster sequential speeds and a much larger 4 TB capacity. The EVO wins on track record and compatibility; the SanDisk wins on raw speed and capacity.

• Choose the Samsung 870 EVO if you are upgrading an older desktop or laptop over SATA and want a reliable, well-reviewed drive with Samsung Magician and Migration tools.
• Choose the SanDisk Optimus GX PRO 850X if your motherboard has a PCIe Gen4 M.2 slot and you move large files or want a 4 TB drive in a single slot.