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SSD comparison · Updated May 14, 2026

Samsung 990 EVO Plus 2TB vs WD_BLACK SN850X 2TB

Side-by-side: Samsung 990 EVO Plus 2TB ($229) vs WD_BLACK SN850X 2TB ($199). $/TB winner, specs, real-world picks for May 2026.

Samsung 990 EVO Plus 2TB Gen 5

Samsung · Samsung Piccolo
$229
$114.50/TB
View on Amazon →

WD_BLACK SN850X 2TB Gen 4

WD · WD G2
$199
$99.50/TB
View on Amazon →
Generation
Gen 5
Gen 4
Price (USD)
$229
$199
Capacity
2 TB
2 TB
$/TB
$114.50
$99.50
Sequential read
7,250 MB/s
7,300 MB/s
Sequential write
6,300 MB/s
6,600 MB/s
Interface
PCIe 4.0x4/5.0x2
PCIe 4.0 x4
Controller
Samsung Piccolo
WD G2
DRAM cache
No (HMB)
Yes
TBW endurance
1,200 TBW
1,200 TBW
Warranty
5 years
5 years
PS5 compatible
Yes
Yes

Verdict: Samsung 990 EVO Plus 2TB vs WD_BLACK SN850X 2TB

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 990 EVO Plus 2TB runs on the dual-mode Samsung Piccolo silicon that uniquely runs PCIe 5.0 x2 or PCIe 4.0 x4. The WD_BLACK SN850X 2TB pairs WD's G2 controller — manufactured by SanDisk and tuned for low-latency gaming workloads.

Prices favor the WD_BLACK SN850X 2TB by $15.00/TB ($99.50/TB versus $114.50/TB). Not a huge gap, but enough to be the tiebreaker if performance is similar.

The DRAM-vs-HMB question divides opinion: WD_BLACK SN850X 2TB's on-board DRAM theoretically helps under sustained workloads, while Samsung 990 EVO Plus 2TB's HMB approach has matured enough that most users won't see the difference. Pick on price if everything else is similar.

Real-world use cases

For PS5 expansion, both are PCIe Gen 4 M.2 2280 drives that meet Sony's minimum spec (7,250 MB/s read). The console can't take advantage of speeds beyond that, so save money by choosing the WD_BLACK SN850X 2TB. Comparing across generations always invites the same question: does the bandwidth gap convert into user-visible improvements? Honest answer for the Samsung 990 EVO Plus 2TB vs WD_BLACK SN850X 2TB pairing: only for sustained sequential reads of multi-GB files. Note for handheld gamers: M.2 2280 is the desktop/laptop standard. Steam Deck and the ROG Ally line need 2230 drives — neither Samsung 990 EVO Plus 2TB nor WD_BLACK SN850X 2TB fits without modification.

Pick the Samsung 990 EVO Plus 2TB if...

Among Samsung's lineup, the 990 EVO Plus is the only consumer drive that physically supports dual-generation PCIe — same hardware, different bus speed depending on platform.

Pick the WD_BLACK SN850X 2TB if...

Go with the WD_BLACK SN850X 2TB for the lower retail price ($199 vs $229), better $/TB economics ($99.50/TB), and a dedicated DRAM cache chip. 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.

Best value for money

WD_BLACK SN850X 2TB
$99.50/TB beats the alternative by 13%

Best for gaming

WD_BLACK SN850X 2TB
Strong $/MB-s ratio for game loads, and fits the PS5 expansion slot

Best for content creators

WD_BLACK SN850X 2TB
Best write-heavy profile here: 6,600 MB/s sustained, 1,200 TBW

Best for PS5

WD_BLACK SN850X 2TB
PS5-compatible Gen 4 at $99.50/TB
FAQ

Samsung 990 EVO Plus 2TB vs WD_BLACK SN850X 2TB — common questions

What's the price difference between Samsung 990 EVO Plus 2TB and WD_BLACK SN850X 2TB?

The WD_BLACK SN850X 2TB costs $199 (99.50 per TB), while the Samsung 990 EVO Plus 2TB runs $229 (114.50 per TB). The gap is $30, equivalent to about 13% per TB. Prices change weekly; check current Amazon listings before deciding.

Does the WD_BLACK SN850X 2TB's read advantage matter in practice?

Specs say yes (7,300 MB/s versus 7,250 MB/s). Real-world testing says rarely. Game load times and OS boots saturate well below either drive's peak read speed. The advantage shows up in sustained sequential reads — large file copies, raw video reads, dataset loads.

Will the Samsung 990 EVO Plus 2TB or WD_BLACK SN850X 2TB work in my PlayStation 5?

Yes to both — both meet Sony's expansion specs (PCIe Gen 4 NVMe, M.2 2280, with a heatsink). The PS5 won't differentiate between them in benchmarks because its internal storage controller throttles to PCIe Gen 4 speeds. WD_BLACK SN850X 2TB wins this matchup if price is your tiebreaker.

Does the WD_BLACK SN850X 2TB's DRAM cache make a noticeable difference?

For OS, gaming, and general productivity: no. The Samsung 990 EVO Plus 2TB's HMB (Host Memory Buffer) implementation matches DRAM performance within 5% on these workloads. DRAM matters for sustained random writes — databases, multi-GB file operations, video editing project saves. Heavy daily writers see the difference; casual users do not.

Is the Gen 5 Samsung 990 EVO Plus 2TB worth the price premium over the Gen 4 WD_BLACK SN850X 2TB?

For gaming, OS drive duty, and general productivity: no. Both drives saturate real-world workloads similarly despite Samsung 990 EVO Plus 2TB's 7,250 MB/s versus WD_BLACK SN850X 2TB's 7,300 MB/s on paper. Gen 5 makes sense for 8K video editing, large AI training datasets, and professional 3D rendering — workloads with sustained sequential reads.

Bottom line: Samsung 990 EVO Plus 2TB or WD_BLACK SN850X 2TB?

Default recommendation: WD_BLACK SN850X 2TB. It hits the right balance of price ($99.50/TB), Gen 4 performance, and brand support for the average buyer. The Samsung 990 EVO Plus 2TB has its place if you need specific brand preference, but that's a narrower use case.

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