Best 2TB PCIe 4.0 Western Digital TLC SSDs
There are 7 2TB PCIe 4.0 Western Digital TLC SSDs compared here. The fastest is the Western Digital Black SN850X at 7300 MB/s read at 2TB, and the highest-rated for endurance is the Western Digital WD BLACK™ SN850 NVMe (1200 TBW). Sequential reads across the group span 4150–7300 MB/s at 2TB.
Why this configuration
A 2TB PCIe 4.0 Western Digital TLC SSD is a mainstream Gen4 pick. Gen4 is the current default NVMe tier: about 7,000 MB/s, widely supported, and priced for volume. Western Digital specifically tends to be chosen here for its firmware track record and warranty support.
2TB is the current default for people who'd rather not think about free space for a while.
Usually chosen for: most modern desktop and laptop builds.
Good fit: everyday all-rounder use, from OS drive to game library.
Ranked list
Speeds on this page are the manufacturer's 2TB ratings where published (7 of 7 drives), not the family headline figure. Rated writes at 2TB run 4150–6900 MB/s.
| # | Model | Tier | Controller | Read MB/s (at 2TB) | TBW | |
|---|---|---|---|---|---|---|
| 1 |  Western Digital WD BLACK™ SN850 NVMe 500GB, 1TB, 2TB | Top-tier | WD_BLACK G2 | Sandisk Modelo 20-82 | 7000 | 1200 | Find on Amazon |
| 2 | Western Digital Black SN850X 1TB, 2TB, 4TB, 8TB | High-end | WD 20-82-20035-B2, WD 20-82-000292 | 7300 | — | Check price on Amazon |
| 3 | Western Digital Black SN7100 500GB, 1TB, 2TB, 4TB | Mid-range | SanDisk Polaris 3 | 7250 | — | Check price on Amazon |
| 4 | Western Digital Blue SN5000 500GB, 1TB, 2TB, 4TB | Value | WD Polaris 3 | 5500 | — | Check price on Amazon |
| 5 | Western Digital Black SN770 250GB, 500GB, 1TB, 2TB | Value | SanDisk 20-82-10081-A1 (Polaris MP | 5150 | — | Check price on Amazon |
| 6 | Western Digital Black SN770M 500GB, 1TB, 2TB | Value | WD 20-82-10081 | 5150 | — | Check price on Amazon |
| 7 | Western Digital Blue SN580 250GB, 500GB, 1TB, 2TB | Value | SanDisk 20-82-10082 (Polaris MP16+ | 4150 | — | Check price on Amazon |
The parts, explained
2TB is today's sweet spot for large game libraries and creative work.
PCIe 4.0 x4 delivers roughly 7,000 MB/s, the current price-to-performance sweet spot for most builds.
TLC NAND is the mainstream choice — a solid balance of endurance, speed and cost.
Staying with Western Digital means consistent firmware, tooling and warranty handling across the range.