WD_BLACK SN850X 2 TB
PCIe 4.0 · 7300 MB/s · Heatsink option
TeamGroup T-Force Cardea Z540 1TB
PCIe 5.0 · 12400/11800 MB/s · 1TB
TeamGroup T-Force Cardea Z540 1TB takes it — here’s why.
In our weighted Specdex score, WD_BLACK SN850X 2 TB lands at 90 and TeamGroup T-Force Cardea Z540 1TB at 92. That puts TeamGroup T-Force Cardea Z540 1TB ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick WD_BLACK SN850X 2 TB if…
- ✓Best PCIe 4.0 sustained speed under load
- ✓5-year warranty
- ✓Excellent gaming/load times
Pick TeamGroup T-Force Cardea Z540 1TB if…
- ✓M.2 NVMe
- ✓Competitive per-GB cost
- ✓TBW scales with capacity
Score breakdown
Specs side-by-side
| Spec | WD_BLACK SN850X 2 TB | TeamGroup T-Force Cardea Z540 1TB |
|---|---|---|
| Capacity | 1 / 2 / 4 / 8 TB | 1TB |
| Interface | PCIe 4.0 x4 NVMe 1.4 | PCIe 5.0 |
| Sequential read | 7300 MB/s | — |
| Sequential write | 6600 MB/s | — |
| NAND | BiCS5 TLC | — |
| Endurance | 1200 TBW (2TB) | — |
| Warranty | 5 years | — |
| Read/Write | — | 12400/11800 MB/s |
WD_BLACK SN850X 2 TB
- +Best PCIe 4.0 sustained speed under load
- +5-year warranty
- +Excellent gaming/load times
- −PCIe 4.0 not 5.0
- −Game Mode 2.0 is software gimmick
- −Premium pricing per TB
TeamGroup T-Force Cardea Z540 1TB
- +M.2 NVMe
- +Competitive per-GB cost
- +TBW scales with capacity
- −Thermals on Gen 5 drives
- −DRAM-less models slower under sustained load
- −Require heatsinks in many systems
FAQ: WD_BLACK SN850X 2 TB vs TeamGroup T-Force Cardea Z540 1TB
Which is better, WD_BLACK SN850X 2 TB or TeamGroup T-Force Cardea Z540 1TB? +
TeamGroup T-Force Cardea Z540 1TB scores 92 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is WD_BLACK SN850X 2 TB worth the price? +
At $219, WD_BLACK SN850X 2 TB delivers a Specdex score of 90 — strongest in reliability.
Is TeamGroup T-Force Cardea Z540 1TB worth the price? +
At $180, TeamGroup T-Force Cardea Z540 1TB delivers a Specdex score of 92 — strongest in read.
Does WD_BLACK SN850X 2 TB or TeamGroup T-Force Cardea Z540 1TB last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.