Samsung 9100 PRO 1TB ($280) vs WD_BLACK SN850X 2TB ($199). $/TB analysis, performance, and use-case recommendations.
This pairing combines different generations and different capacities, which is less common but useful when you're balancing raw performance against storage volume. Samsung 9100 PRO 1TB is a Gen 5 drive at 1 TB; WD_BLACK SN850X 2TB runs Gen 4 at 2 TB.
Hardware-wise, the Samsung 9100 PRO 1TB runs on the proprietary Samsung Presto silicon found only in the 9100 PRO line. The WD_BLACK SN850X 2TB pairs WD's G2 controller — manufactured by SanDisk and tuned for low-latency gaming workloads.
The cost difference is hard to ignore: 64% per TB (WD_BLACK SN850X 2TB at $99.50/TB versus Samsung 9100 PRO 1TB at $280.00/TB). Unless you specifically need the Samsung 9100 PRO 1TB's peak performance, the WD_BLACK SN850X 2TB delivers more storage for the money.
In the read department, the Samsung 9100 PRO 1TB leads by roughly 7 GB/s. The difference is more academic than practical for typical use, but it does matter for video editors moving multi-GB project files.
Write performance separates them too. The Samsung 9100 PRO 1TB sustains 13,400 MB/s writes versus 6,600 MB/s for the WD_BLACK SN850X 2TB — a real advantage for video editors and anyone doing heavy file operations.
WD_BLACK SN850X 2TB earns higher TBW ratings (1,200 vs 600 TBW) — relevant for sustained write workloads, irrelevant for everything else.
Heading to a PlayStation 5? Both drives drop into the console's M.2 bay and report identical real-world benchmarks since the PS5 caps storage at PCIe 4.0 speeds. The WD_BLACK SN850X 2TB wins this matchup on $/TB. The Gen 5 Samsung 9100 PRO 1TB pulls ahead on sequential bandwidth, but Gen 5 advantages rarely surface during everyday tasks — most software hasn't been rewritten to exploit 14,000+ MB/s pipelines. For content creators routinely rendering 4K or 8K video, the Samsung 9100 PRO 1TB's 13,400 MB/s sustained write is the deciding factor — multi-GB project files land noticeably faster than on the alternative. Note for handheld gamers: M.2 2280 is the desktop/laptop standard. Steam Deck and the ROG Ally line need 2230 drives — neither Samsung 9100 PRO 1TB nor WD_BLACK SN850X 2TB fits without modification.
The Samsung 9100 PRO 1TB is the right call if meaningfully faster reads (14,700 MB/s), and higher sustained writes (13,400 MB/s) matter to you. Among consumer SSD makers, Samsung's PRO series consistently scores highest on long-term reliability surveys (Backblaze, Puget Systems Q1 2026 data).
The WD_BLACK SN850X 2TB is the right call if the lower retail price ($199 vs $280), better $/TB economics ($99.50/TB), and a higher TBW endurance rating (1,200 TBW) matter to you. Among Gen 4 flagships, the SN850X strikes a sweet spot — premium silicon at sub-Samsung pricing, with WD's established RMA process to back it up.