2026-11-06
Why Your New SSD Drops to 45MB/s Halfway Through Copying a Large File: 200GB Continuous Write Benchmark (TLC vs. QLC)
Many budget 1TB NVMe SSDs advertise blistering 3,500 MB/s speeds and ace 1GB synthetic benchmarks—yet when you copy a 60GB video folder on a half-full drive, write speeds crash by 98% to 45 MB/s, slower than a 15-year-old mechanical hard drive. We ran a 200GB continuous write test comparing a DRAM-less QLC drive against a native TLC drive and show how to inspect the raw NAND Flash ID in 10 seconds without voiding your warranty.
