WD Green SN3000 500 GB vs SK hynix SC311 SATA 256GB
Short answer: which is best?
WD Green SN3000 500 GB is 475 % stronger than SK hynix SC311 SATA 256GB. WD Green SN3000 500 GB ranks #5 of 128 measured system drives at WhatFPS (16,530 Drive score in its best run — best of 2 rigs, 3 verified runs). SK hynix SC311 SATA 256GB ranks #120 of 128 measured system drives at WhatFPS (2,875 Drive score in its best run — 1 rig, 1 verified run). Each part is shown at its best run, picked from 4 verified WhatFPS runs — measured, not estimated, not self-reported.
Measured comparison
| Metric | WD Green SN3000 500 GB | SK hynix SC311 SATA 256GB |
|---|---|---|
| Drive score, best run (the drive's own performance: sequential read + 4K IOPS) | 16,530 | 2,875 |
| Best rig (GAMING — whole PC) | 9,178 | 7,406 |
| Sequential read | 4,129 MB/s | 496 MB/s |
| 4K IOPS | 23,227 | 5,850 |
| 4K latency, median (lower is better) | 38 µs | 160 µs |
| Type | NVMe SSD | SATA SSD |
| Size | 500 GB | 256 GB |
What the numbers mean
The headline score is the part's best measured run, and the measurements under it come from that same run. It shows what the part has been proven to do — not what an average rig gets out of it. The drive score is the system drive's measured performance in the rigs it sat in — sequential read and 4K IOPS, unbuffered. PCIe generation, fill level and driver affect it. GAMING is the whole rig's score. We show both and never mix them.
All numbers come from our benchmark suite, the same test on every PC, written in Rust with no middleware. The methodology is open at https://whatfps.com/metodik
All measurements for WD Green SN3000 500 GB · All measurements for SK hynix SC311 SATA 256GB