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The WD Black SN850X is a PCIe Gen4 M.2 2280 NVMe drive built for gaming PCs and the PS5. The 4TB version reads up to 7,300 MB/s and writes up to 6,600 MB/s, with a rated endurance of 2,400 TBW and a 5-year warranty. It adds a DRAM cache and the latest Game Mode 2.0 software, which predicts and preloads game data. Rivals like the Samsung 990 Pro and Crucial T500 are close on speed, but the SN850X matches them while offering a 4TB option and consistent sustained performance. Reviewers rate it among the best Gen4 gaming drives, though it runs warm and needs a heatsink for heavy writes.
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Reviewers and owners rate the SN850X as one of the fastest Gen4 drives and praise its consistent sustained speeds and large capacity. Complaints focus on heat and on the small real-world difference from cheaper Gen4 drives.
The WD_BLACK SN850X is an M.2 2280 NVMe solid-state drive made for gaming. This model has 4TB of storage and uses PCIe Gen4 technology. It reads at speeds up to 7,300 MB/s and has very low latency.
It works with desktop PCs and gaming consoles. The latest version of Game Mode is supported and includes load prediction to speed up in-game loading. The drive comes with a 5-year warranty.
