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3.0 USB Speeds Going Up and Down

Masterlee3
By Masterlee3
in Storage Devices
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Posted

I am currently putting some files (around 5 GB) on a PNY 256GB 3.0 USB Thumb Drive. I don't know the exact specs on the thumb drive it self, but I am having an issue with the write speeds on it. Throughout the process the thumb drive's write speed will go up to around 80 mb/s one second and the next second it will go down to speeds as low as 5mb/s (or sometimes near or at 0mb/s) and then freeze for a few seconds only to rise back up to 80 mb/s for one second and will repeat the cycle. Could this be a software issue or just bad hardware? The picture attached shows the write speed graph.

Thumbdrive speeds.PNG

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Posted

Could be a heat issue, or might be a form of SLC caching (yes, TLC-based USB drives can use this).

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