Compare Samsung 990 PRO 1TB and WD Blue SN5000 2TB: prices, speeds, $/TB. Which to buy in July 2026? Full spec breakdown.
Both run on Gen 4 hardware but at different capacities: 1 TB for the Samsung 990 PRO 1TB versus 2 TB for the WD Blue SN5000 2TB. Whether the larger drive's $/TB advantage justifies the higher upfront cost depends on how much you actually need.
Hardware-wise, the Samsung 990 PRO 1TB runs on Samsung's 8nm Pascal controller, the silicon powering the 990 PRO line. The WD Blue SN5000 2TB pairs the SanDisk controller.
Price separates these two meaningfully. The WD Blue SN5000 2TB costs $147.50/TB versus $239.00/TB for the Samsung 990 PRO 1TB — a 38% premium that needs justification in real benchmarks, not just spec-sheet bragging.
The Samsung 990 PRO 1TB carries a dedicated DRAM chip for FTL (Flash Translation Layer) mapping; the WD Blue SN5000 2TB relies on HMB (Host Memory Buffer), borrowing 64 MB from system RAM. The practical gap shows up only under sustained random write loads.
On warranty endurance the WD Blue SN5000 2TB carries 900 TBW against Samsung 990 PRO 1TB's 600 TBW. Both will outlast typical use, but the gap matters if you're doing professional content work.
For PS5 expansion, both are PCIe Gen 4 M.2 2280 drives that meet Sony's minimum spec (5,500 MB/s read). The console can't take advantage of speeds beyond that, so save money by choosing the WD Blue SN5000 2TB. Heavy write workloads — video editing, RAW photo libraries, backup operations — favor the Samsung 990 PRO 1TB's 6,900 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 990 PRO 1TB ranks #3 of 4 Gen 4 1 TB drives we track by $/TB, while the WD Blue SN5000 2TB ranks #6 of 11 Gen 4 2 TB drives. Neither is a value leader right now — if $/TB is your priority, check the cheaper alternatives below before committing.
Pick the Samsung 990 PRO 1TB if you value the lower retail price ($239 vs $295), meaningfully faster reads (7,450 MB/s), higher sustained writes (6,900 MB/s), and a dedicated DRAM cache chip. Samsung's PRO line has the longest track record for firmware reliability — over a decade of consumer SSDs with global RMA support.
Pick the WD Blue SN5000 2TB if you value better $/TB economics ($147.50/TB), and a higher TBW endurance rating (900 TBW).