ADATA SU650 512GB SSD vs SanDisk Extreme 64 GB microSDXC

These are not substitutes. The ADATA SU650 is a 2.5-inch SATA SSD that replaces a laptop or desktop hard drive; the SanDisk Extreme is a 64 GB microSD card for phones, drones, action cameras and the Nintendo Switch. Buy the SU650 if you are reviving an older computer. Buy the SanDisk Extreme if you need removable storage for a small device. The SU650's 520/450 MB/s is far faster than any spinning drive, but slow next to NVMe. The SanDisk card is rated A2 and V30, so it handles 4K video recording and app installs, and its 4.8-out-of-5 rating from 150 owners reflects that.

• Choose the ADATA SU650 if you want to replace a 2.5-inch hard drive in an older laptop or desktop and need a cheap, brand-name SATA SSD with a migration tool.
• Choose the SanDisk Extreme if you need a 64 GB microSDXC card for a phone, drone, action camera or Switch and want A2 app performance plus V30 video recording.