Samsung 990 Pro with Heatsink vs Lexar NM790 NVMe SSD

The Samsung 990 Pro with Heatsink is the safer pick for a PS5 or a gaming PC that runs long, heavy sessions: it has its own DRAM cache, a real heatsink, AES 256-bit encryption and Samsung Magician for health monitoring and firmware updates. The Lexar NM790 is a strong alternative for laptops and desktops where power draw and heat matter, using HMB 3.0 instead of a DRAM chip and drawing up to 40% less power than DRAM-based Gen 4 drives. On paper the two are close on sequential speed, but the Samsung's DRAM cache and heatsink give it an edge in sustained random work and thermal stability. Owners of the Samsung praise fast loads and no throttling; the Lexar's high rating comes from far fewer reviews, so treat it as promising but less proven.

• Choose the Samsung 990 Pro with Heatsink if you want a PS5-ready drive with a built-in heatsink, DRAM cache, hardware encryption and Samsung's monitoring software.
• Choose the Lexar NM790 if you want near-flagship Gen 4 speed with lower power draw for a laptop or a compact build, and you don't need a heatsink or encryption.