Crucial MX300 256 GB

Measured performance for Crucial MX300 256 GB across 1 verified WhatFPS runs. Every number is measured in our benchmark suite — not estimated, not self-reported. Drive score (the drive's own performance: sequential read + 4K IOPS): 2,851 on average over the best run per rig, best run 2,851 — #87 of 91 measured system drives. Most often paired with Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz.

Crucial MX300 256 GB — subtests

  • Sequential read (1 MB blocks): 490 MB/s
  • 4K IOPS: 5,821
  • 4K latency, median: 168 µs — lower is better
  • 4K latency, p99: 240 µs

Specifications

  • Manufacturer: Crucial
  • Series: MX300
  • Type: SATA SSD
  • Size: 256 GB
  • Model string (seen): Crucial_CT275MX300SSD1

What the numbers mean

The GAMING score is a geometric mean of GPU (63 %), CPU (30 %), RAM (5 %) and drive (2 %) — a weak part cannot hide behind a strong one. The drive score is a geometric mean of sequential read (1 MB blocks) and random 4K read (IOPS), measured unbuffered on a 256 MB temp file on the system drive. Only the system drive is measured. The same model can differ between rigs: PCIe generation, fill level and driver all matter. Every run is HMAC-signed in the app and scored on the server. The full methodology is open at https://whatfps.com/metodik

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