Side-by-side: Samsung 9100 PRO w/ Heatsink 2TB ($595) vs WD_BLACK SN850X 2TB ($390). $/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 w/ Heatsink 2TB runs on Samsung's in-house Presto controller, designed specifically for the 9100 PRO series. The WD_BLACK SN850X 2TB pairs the proprietary WD G2 silicon, optimized for the WD_BLACK line.
Money matters here — $195.00/TB on the WD_BLACK SN850X 2TB versus $297.50/TB on the Samsung 9100 PRO w/ Heatsink 2TB. That's enough of a spread that for budget-conscious builders, the WD_BLACK SN850X 2TB becomes the default unless reviews of your specific workload prefer the Samsung 9100 PRO w/ Heatsink 2TB.
Read speeds favor the Samsung 9100 PRO w/ Heatsink 2TB: 14,700 MB/s versus 7,300 MB/s for the WD_BLACK SN850X 2TB, a 50% advantage. Sequential-heavy workloads notice; transactional workloads don't.
The Samsung 9100 PRO w/ Heatsink 2TB writes about 51% faster (13,400 MB/s vs 6,600 MB/s). Whether that matters depends entirely on what you write to the drive — gameplay capture and large project saves benefit, browsing and gaming do not.
If this purchase is for a PS5 storage expansion, the comparison flattens — Sony's PCIe Gen 4 controller normalizes both Samsung 9100 PRO w/ Heatsink 2TB and WD_BLACK SN850X 2TB to roughly equal in-game load times. The cheaper drive is the smart pick. Comparing across generations always invites the same question: does the bandwidth gap convert into user-visible improvements? Honest answer for the Samsung 9100 PRO w/ Heatsink 2TB vs WD_BLACK SN850X 2TB pairing: only for sustained sequential reads of multi-GB files. Heavy write workloads — video editing, RAW photo libraries, backup operations — favor the Samsung 9100 PRO w/ Heatsink 2TB's 13,400 MB/s sustained write speed. Both drives use the 2280 form factor, which is too long for Steam Deck or ROG Ally — you'd need a 2230 variant if either manufacturer offers one, or a dedicated handheld-format drive instead.
Market context: the Samsung 9100 PRO w/ Heatsink 2TB ranks #10 of 11 Gen 5 2 TB drives we track by $/TB, while the WD_BLACK SN850X 2TB ranks #8 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 w/ Heatsink 2TB and WD_BLACK SN850X 2TB on $/TB:
Go with the Samsung 9100 PRO w/ Heatsink 2TB for meaningfully faster reads (14,700 MB/s), and higher sustained writes (13,400 MB/s). Samsung's PRO line has the longest track record for firmware reliability — over a decade of consumer SSDs with global RMA support.
Go with the WD_BLACK SN850X 2TB for the lower retail price ($390 vs $595), and better $/TB economics ($195.00/TB). WD_BLACK's SN850X earned its reputation through consistent sustained performance under gaming workloads — fewer micro-stutters during open-world streaming than budget alternatives.