The WD_BLACK SN850X has been the reference SSD for gaming since launch, and with over 17,400 reviews and 4.8 stars, it remains the product with the best combination of volume and satisfaction in our entire storage comparison.

Real-world speed, not just box numbers

The 7,300 MB/s sequential read speed WD promises holds up consistently in real-world use, something not every SSD on the market manages outside lab conditions. For game load times, system boot, and transferring large files, the difference over a traditional SATA SSD is obvious from the first use.

PCIe 4.0 in 2026: does it still make sense?

With the arrival of PCIe 5.0 drives like the Samsung 9100 PRO in this same comparison, it's fair to ask whether the SN850X has fallen behind. The answer is no: unless you have a PCIe 5.0 motherboard and workloads that actually exploit that extra bandwidth, the practical difference in everyday gaming is minimal, and the SN850X remains more than enough.

Its only real downside is price: it shares the most expensive spot in our comparison with the Samsung 9100 PRO, despite the latter using a more modern interface. Even so, with its track record of reliability and the backing of nearly 17,500 real buyers, it remains one of the safest bets in gaming storage.