Samsung 990 Pro NVMe SSD: 5 of 8 decision facts sourced.
WD Black SN850X NVMe SSD: 5 of 8 decision facts sourced.
| Samsung 990 Pro NVMe SSD | WD Black SN850X NVMe SSD | |
|---|---|---|
| Price today | Price not yet checked | Price not yet checked |
| Capacity | 4000 gigabytes bestbuy.com | 4TB newegg.com |
| Interface | PCIe Gen 4 x4 bestbuy.com | PCI-Express 4.0 x4 newegg.com |
| Sequential read | Not yet sourced | Up to 7300 MBps newegg.com |
| Sequential write | Not yet sourced | Up to 6600 MBps newegg.com |
| Endurance (TBW) | 2400 terabytes bestbuy.com | 2400TB newegg.com |
| Warranty | 5 Year bestbuy.com | Not yet sourced |
| Starting MSRP | $1,099.99 bestbuy.com | Not yet sourced |
Not yet sourced — Samsung 990 Pro NVMe SSD: Sequential read, Sequential write, DRAM cache. WD Black SN850X NVMe SSD: DRAM cache, Warranty, Starting MSRP. No manufacturer, official or retailer source we read publishes these yet; we don't estimate them.
Verdict: The Samsung 990 Pro delivers superior raw performance and endurance, making it the better choice for power users who need the fastest sequential transfers and can afford the premium price. The WD Black SN850X offers solid performance at a lower cost, ideal for gamers or mainstream builds where the speed gap is less critical.
Samsung 990 Pro NVMe SSD lists at $179 while WD Black SN850X NVMe SSD lists at $149 — WD Black SN850X NVMe SSD undercuts Samsung 990 Pro NVMe SSD by $30 (20%).
Winner: Samsung 990 Pro NVMe SSD
Samsung 990 Pro NVMe SSD: 8.5/10
WD Black SN850X NVMe SSD: 7/10
| Samsung 990 Pro NVMe SSD | WD Black SN850X NVMe SSD | |
|---|---|---|
| Capacity | 4000 gigabytes | 4TB |
| Interface | PCIe Gen 4 x4 | PCI-Express 4.0 x4 |
| Endurance (TBW) | 2400 terabytes | 2400TB |
| Warranty | 5 Year | — |
| Form factor | M.2 2280 | M.2 2280 |
| Starting MSRP | $1,099.99 | — |
Our pick: Samsung 990 Pro NVMe SSD.
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