Lexar NM790 1 TB vs HFS512GEM9X174N 512 GB
Short answer: which is best?
Lexar NM790 1 TB is 32.9 % stronger than HFS512GEM9X174N 512 GB. Lexar NM790 1 TB ranks #4 of 130 measured system drives at WhatFPS (16,958 Drive score in its best run — best of 2 rigs, 2 verified runs). HFS512GEM9X174N 512 GB ranks #29 of 130 measured system drives at WhatFPS (12,763 Drive score in its best run — 1 rig, 1 verified run). Each part is shown at its best run, picked from 3 verified WhatFPS runs — measured, not estimated, not self-reported.
Measured comparison
| Metric | Lexar NM790 1 TB | HFS512GEM9X174N 512 GB |
|---|---|---|
| Drive score, best run (the drive's own performance: sequential read + 4K IOPS) | 16,958 | 12,763 |
| Best rig (GAMING — whole PC) | 10,171 | 6,953 |
| Sequential read | 4,473 MB/s | 3,677 MB/s |
| 4K IOPS | 22,565 | 15,549 |
| 4K latency, median (lower is better) | 41 µs | 58 µs |
| Type | NVMe SSD | NVMe SSD |
| Size | 1 TB | 512 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 Lexar NM790 1 TB · All measurements for HFS512GEM9X174N 512 GB