Best SSDs of 2026: PCIe 5.0 Is Real, But Do You Need It?

I tested ten drives in this roundup using CrystalDiskMark 8, AS SSD 2, and a set of real-world workload tests: game installation (via Steam), 4K video file transfer from NAS, and a Windows boot-to-desktop measurement. Temperatures were logged during sustained sequential writes to catch any throttling.

Quick Picks

• Best overall value: WD Black SN850X 2TB ($149) — PCIe 4.0, proven reliability, consistently good performance
• Best PCIe 5.0: Crucial T705 2TB ($219) — fastest consumer drive we've tested, handles heat better than most
• Best budget: Kingston NV3 2TB ($79) — PCIe 4.0, no DRAM cache, but fast enough for everything except professional workloads
• Best for PS5: Samsung 990 Pro 4TB ($189) — Sony-certified, consistently good thermal behavior in the console's limited airflow

CrystalDiskMark Sequential Results (2TB drives)

The PCIe 5.0 Question

The Crucial T705's 12,341 MB/s sequential read looks dramatic next to PCIe 4.0 drives. The question is whether that speed translates to anything you can feel. In our game launch test (loading Cyberpunk 2077 from title screen to playable), the difference between the fastest PCIe 4.0 drive and the T705 was 0.8 seconds. Loading a Windows installation from cold boot: 1.1 seconds faster on the T705.

The scenarios where PCIe 5.0 makes a real difference are working with large files: moving a 100GB video project from one folder to another, decompressing a large archive, or iterative compile-test cycles in software development. If your day involves lots of large file movement, PCIe 5.0 is worth the premium. For gaming or general desktop use, a good PCIe 4.0 drive is indistinguishable in feel.

Heat Management: The PCIe 5.0 Problem

The T705 and other PCIe 5.0 drives run significantly hotter than PCIe 4.0 equivalents. Without a heatsink, the T705 throttled in our sustained write test — sequential write speed dropped from 11,800 MB/s to ~7,200 MB/s after about 90 seconds. With a heatsink, no throttling occurred in any test. Most Z790/Z890 and X670/B650 motherboards now include M.2 heatsinks; if yours doesn't, factor in an aftermarket heatsink ($15-25) when budgeting a PCIe 5.0 drive.

Best All-Round: WD Black SN850X

The SN850X has been our standard recommendation for two years and nothing has displaced it from the value slot. At $149 for 2TB, it delivers PCIe 4.0 performance that matches or beats most competitors at higher prices, has a DRAM cache that prevents the speed cliff common in budget drives during large sustained writes, and WD's reliability track record on consumer NVMe is solid.

The 4TB version ($279) is also worth considering for a main build drive — 4TB SSDs have dropped to a price where a dedicated games drive and an OS drive on a single large SSD makes more sense than it did two years ago.

Budget Pick: Kingston NV3

The NV3 has no DRAM cache, which means sustained write performance drops significantly after the SLC cache fills (~80GB on the 2TB model). For installing games, booting Windows, and loading applications, you'll never notice this. For transferring large video files or doing database operations, you will. At $79 for 2TB, it's the right call for a secondary drive, a storage expansion, or a build where budget is the primary constraint.

The Longevity Question

Endurance ratings (TBW — terabytes written) matter more than most buyers realize for write-heavy workloads. The Samsung 990 Pro 2TB is rated at 1,200 TBW; the Kingston NV3 2TB is rated at 640 TBW. For normal desktop use (30-50GB written per day), both will outlast the useful life of any build you put them in. For a NAS, cache drive, or video editing scratch disk with heavy daily writes, TBW ratings matter more.