CrystalDiskMark - The Premier Disk Benchmark Tool for SSD & HDD 9.0.2

CrystalDiskMark is the world-renowned, open-source disk drive benchmark utility designed to quickly measure the sequential and random read/write throughput of storage drives, developed by Noriyuki Miyazaki (hiyohiyo / Crystal Dew World). It serves as the standard industry metric for benchmarking high-speed NVMe PCIe SSDs, SATA solid-state drives, traditional HDDs, and USB external drives.

Key Features of CrystalDiskMark:

• Sequential Read and Write Testing: Measures sustained transfer speeds for large files using 1MiB block transfers across multi-queue and single-queue profiles.
• Random 4KiB Throughput (IOPS & MB/s): Rigorously tests small random reads and writes (Q32T1, Q1T1), reflecting true everyday operating system responsiveness, software launching speed, and gaming load times.
• Dedicated NVMe SSD & Real-World Profiles: Switch easily between Default, NVMe SSD optimized presets, Real World Performance tests, and Peak Performance latency metrics.
• Customizable Workload Parameters: Select test count iterations (1 to 9), workload file sizes (16MiB to 64GiB), and test data patterns (Random or 0Fill).
• Broad Storage Media Support: Fully compatible with next-gen PCIe 5.0 and PCIe 4.0 NVMe SSDs, SATA III drives, external Thunderbolt / USB-C drives, and SD memory cards.

Understanding the Test Metrics:

• Sequential (SEQ1M): Raw peak sequential throughput in MB/s for transferring large files.
• Random (RND4K): Low-queue depth 4KB input/output operations, the fundamental indicator of smooth Windows desktop multitasking.