WD BLACK SN8100 4TB
4TB · PCIe 5.0 NVMe · 14,900 MB/s read · PassMark #9
KIOXIA-EXCERIA PRO G2 SSD
PCIe 5.0 NVMe · 14,900 MB/s read · PassMark #6
KIOXIA-EXCERIA PRO G2 SSD takes it — here’s why.
In our weighted Specdex score, WD BLACK SN8100 4TB lands at 85 and KIOXIA-EXCERIA PRO G2 SSD at 87. That puts KIOXIA-EXCERIA PRO G2 SSD ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick WD BLACK SN8100 4TB if…
- ✓PassMark Disk Score top-20 (90,416) — sustained-write class-leading
- ✓PCIe 5.0 interface for next-gen platforms (AM5, LGA 1851)
Pick KIOXIA-EXCERIA PRO G2 SSD if…
- ✓PassMark Disk Score top-20 (92,587) — sustained-write class-leading
- ✓Pro-tier controller and DRAM cache for sustained throughput
Winner by scenario
Derived from the sub-score breakdown · not a separate testValue for money
KIOXIA-EXCERIA PRO G2 SSDSpecdex score per dollar at MSRP
KIOXIA-EXCERIA PRO G2 SSD more score per dollar ($200 vs $549).
Score breakdown
Specs side-by-side
| Spec | WD BLACK SN8100 4TB | KIOXIA-EXCERIA PRO G2 SSD |
|---|---|---|
| Form factor | M.2 2280 (single-sided) | M.2 2280 |
| Interface | PCIe 5.0 x4 NVMe 2.0 | PCIe 5.0 x4 NVMe 2.0d |
| Sequential read | 14,900 MB/s | 14,900 MB/s |
| Sequential write | 14,000 MB/s | 13,400 MB/s |
| Random read | 2,300,000 IOPS | 2,300,000 IOPS |
| Random write | 2,400,000 IOPS | 1,950,000 IOPS |
| Controller | SanDisk-tuned Silicon Motion SM2508 (6nm, quad Cortex-R8) | Silicon Motion SM2508 (8-channel) |
| NAND | 218-layer BiCS8 CBA 3D TLC | 218-layer Kioxia BiCS8 3D TLC |
| DRAM | yes (onboard DRAM) | yes (only DRAM model in Kioxia Gen5 lineup) |
| Endurance | 2,400 TBW | 1,200 TBW |
| Warranty | 5 years | 5 years |
| PassMark Disk Score | 90,416 | 92,587 |
| PassMark rank | #9 of 100 consumer SSDs | #6 of 100 consumer SSDs |
| Spec basis | — | 2TB reference SKU — TBW/IOPS vary by capacity |
WD BLACK SN8100 4TB
- +PassMark Disk Score top-20 (90,416) — sustained-write class-leading
- +PCIe 5.0 interface for next-gen platforms (AM5, LGA 1851)
- −PCIe 5.0 drives run hot — heatsink or motherboard M.2 cooling recommended
- −Pricing varies — confirm current retail before purchase
KIOXIA-EXCERIA PRO G2 SSD
- +PassMark Disk Score top-20 (92,587) — sustained-write class-leading
- +Pro-tier controller and DRAM cache for sustained throughput
- −DRAM-less controllers on lower-tier variants may throttle under sustained writes
- −Pricing varies — confirm current retail before purchase
FAQ: WD BLACK SN8100 4TB vs KIOXIA-EXCERIA PRO G2 SSD
Which is better, WD BLACK SN8100 4TB or KIOXIA-EXCERIA PRO G2 SSD? +
KIOXIA-EXCERIA PRO G2 SSD scores 87 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is WD BLACK SN8100 4TB worth the price? +
At $549, WD BLACK SN8100 4TB delivers a Specdex score of 85 — strongest in passmark_disk.
Is KIOXIA-EXCERIA PRO G2 SSD worth the price? +
At $200, KIOXIA-EXCERIA PRO G2 SSD delivers a Specdex score of 87 — strongest in passmark_disk.
Does WD BLACK SN8100 4TB or KIOXIA-EXCERIA PRO G2 SSD 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.
Which is the better value, WD BLACK SN8100 4TB or KIOXIA-EXCERIA PRO G2 SSD? +
KIOXIA-EXCERIA PRO G2 SSD — more score per dollar ($200 vs $549). Specdex score per dollar at MSRP.