Blackmagic Disk Speed Test Mac May 2026

macOS 10.13 or later (Apple Silicon native).

It does not simply measure theoretical maximum read/write speeds. Instead, it simulates real-world video workloads and answers one critical question: "Is my drive fast enough to handle this specific video format?" The app writes (then reads) a large block of test data—typically 5 GB by default—to the target drive. It measures the sustained performance, not just burst speeds (which are often misleading for video work). blackmagic disk speed test mac

| Drive Type | Typical Write Speed | Video Capability | | :--- | :--- | :--- | | | 50–90 MB/s | 1080p ProRes 422 (maybe) | | 7200 RPM HDD | 120–180 MB/s | 1080p ProRes 422 HQ | | SATA SSD (2.5") | 450–520 MB/s | 4K ProRes 422 HQ / 4K RAW (light) | | NVMe SSD (PCIe 3.0) | 1,500–3,000 MB/s | 8K ProRes 4444 / 6K RAW | | NVMe SSD (PCIe 4.0) | 5,000–7,000+ MB/s | 8K RAW, 12K Blackmagic RAW | | Thunderbolt 3/4 RAID | 2,000–5,000+ MB/s | Multi-stream 8K editing | macOS 10