KIOXIA-EXCERIA PRO G2 SSD
PCIe 5.0 NVMe · 14,900 MB/s read · PassMark #6
WD Blue SN580 2TB
PCIe 4.0 · 4150/4150 MB/s · 2TB
KIOXIA-EXCERIA PRO G2 SSD takes it — here’s why.
In our weighted Specdex score, KIOXIA-EXCERIA PRO G2 SSD lands at 87 and WD Blue SN580 2TB at 86. That puts KIOXIA-EXCERIA PRO G2 SSD ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.
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
Pick WD Blue SN580 2TB if…
- ✓M.2 NVMe
- ✓Competitive per-GB cost
- ✓TBW scales with capacity
Winner by scenario
Derived from the sub-score breakdown · not a separate testValue for money
TieSpecdex score per dollar at MSRP
Effectively tied — similar score-per-dollar at MSRP.
Score breakdown
Specs side-by-side
| Spec | KIOXIA-EXCERIA PRO G2 SSD | WD Blue SN580 2TB |
|---|---|---|
| Form factor | M.2 2280 | — |
| Interface | PCIe 5.0 x4 NVMe 2.0d | PCIe 4.0 |
| Sequential read | 14,900 MB/s | — |
| Sequential write | 13,400 MB/s | — |
| Random read | 2,300,000 IOPS | — |
| Random write | 1,950,000 IOPS | — |
| Controller | Silicon Motion SM2508 (8-channel) | — |
| NAND | 218-layer Kioxia BiCS8 3D TLC | — |
| DRAM | yes (only DRAM model in Kioxia Gen5 lineup) | — |
| Endurance | 1,200 TBW | — |
| Warranty | 5 years | — |
| PassMark Disk Score | 92,587 | — |
| PassMark rank | #6 of 100 consumer SSDs | — |
| Spec basis | 2TB reference SKU — TBW/IOPS vary by capacity | — |
| Capacity | — | 2TB |
| Read/Write | — | 4150/4150 MB/s |
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
WD Blue SN580 2TB
- +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: KIOXIA-EXCERIA PRO G2 SSD vs WD Blue SN580 2TB
Which is better, KIOXIA-EXCERIA PRO G2 SSD or WD Blue SN580 2TB? +
KIOXIA-EXCERIA PRO G2 SSD scores 87 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.
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.
Is WD Blue SN580 2TB worth the price? +
At $180, WD Blue SN580 2TB delivers a Specdex score of 86 — strongest in read.
Does KIOXIA-EXCERIA PRO G2 SSD or WD Blue SN580 2TB 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.