Side-by-side: Samsung 9100 PRO 2TB ($400) vs WD_BLACK SN7100 2TB ($305). $/TB winner, specs, real-world picks for September 2026.
This is a generational matchup at 2 TB: the older-gen drive offers proven reliability and better $/TB, while the newer-gen sibling brings raw bandwidth that most users never tap.
Hardware-wise, the Samsung 9100 PRO 2TB runs on Samsung's Presto controller — built in-house to push V-NAND to its Gen 5 ceiling. The WD_BLACK SN7100 2TB pairs the SanDisk A101 — a more recent design from the WD/SanDisk lineup.
Prices favor the WD_BLACK SN7100 2TB by $47.50/TB ($152.50/TB versus $200.00/TB). Not a huge gap, but enough to be the tiebreaker if performance is similar.
On sequential reads the Samsung 9100 PRO 2TB pulls ahead by 7,450 MB/s (14,700 MB/s versus 7,250 MB/s). That matters for moving large files but rarely shows up in game loads.
Write speeds skew toward the Samsung 9100 PRO 2TB: 13,400 MB/s sustained against 6,900 MB/s. Content creators feel this; gamers do not.
The DRAM-vs-HMB question divides opinion: Samsung 9100 PRO 2TB's on-board DRAM theoretically helps under sustained workloads, while WD_BLACK SN7100 2TB's HMB approach has matured enough that most users won't see the difference. Pick on price if everything else is similar.
PS5 owners get no measurable benefit from either drive's peak speed because Sony's internal NVMe controller throttles to ~5,500 MB/s; treat Samsung 9100 PRO 2TB and WD_BLACK SN7100 2TB as interchangeable here and let price decide. Comparing across generations always invites the same question: does the bandwidth gap convert into user-visible improvements? Honest answer for the Samsung 9100 PRO 2TB vs WD_BLACK SN7100 2TB pairing: only for sustained sequential reads of multi-GB files. Video editors will gravitate toward the Samsung 9100 PRO 2TB for its write headroom (13,400 MB/s sustained). Project saves and proxies move faster, which compounds across a workday. Heads-up — these are full-length 2280 drives. Steam Deck and most current handhelds require shorter 2230 modules, so check capacity-specific 2230 variants if that's your target platform.
Market context: the Samsung 9100 PRO 2TB ranks #7 of 11 Gen 5 2 TB drives we track by $/TB, while the WD_BLACK SN7100 2TB ranks #6 of 11 Gen 4 2 TB drives. Neither cracks the top of the value table, so it's worth glancing at the alternatives below before picking either.
As of September 7, 2026, these tracked drives undercut both the Samsung 9100 PRO 2TB and WD_BLACK SN7100 2TB on $/TB:
Go with the Samsung 9100 PRO 2TB for meaningfully faster reads (14,700 MB/s), higher sustained writes (13,400 MB/s), and a dedicated DRAM cache chip. Samsung backs the PRO series with one of the strongest warranty experiences in consumer storage — RMAs typically process within 5 business days globally.
Go with the WD_BLACK SN7100 2TB for the lower retail price ($305 vs $400), and better $/TB economics ($152.50/TB).