The comment is about Sandisk Extreme Go 128GB SDCZ800-128G-G46. On the box is the inscription: 200MB/sec Read Speed 150MB/sec Write Speed In fact, on my old computer with USB 3.0 (which is now fashionable to call 3.1 gen 1 thanks to Intel, which still cannot implement 3.1 gen 2 at the chipset level): Read: 106MB/sec (serial, direct) Write: 33MB/sec (serial, direct) If the flash drive is loaded more than 95%, then the write speed drops to . 3MB / sec. This is a failure. Identification utilities do not see the controller type and do not show anything at all. Physical Disk Capacity: 126567317504 Bytes; OverProvisioning ~ 10,871,635,968 bytes; Internal Tags: 3W4F-8CF2
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