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SAMSUNG 970 EVO plus slow write speed but good read speed on M1 with external TB4 enclosure

(Topic created on: 14-09-2023 08:42 AM)
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Atze552
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As the title suggests: I bought an ACASIS TB4 enclosure and a 970 EVO Plus to use with a M1 Macbook Air. 

Read speeds are around 2700 MB/s. Write speeds only reach around 1300 MB/s. I checked just about everything including Firmware of the SSD, cable, heat pad/ temperature. I can reliably get the drive to throttle after a few hundred GB of transfer. But right after plugging it in and temperatures at around 40C, there should be no throttling that explains the issue. And the read speeds are constant at lower/ higher temperatures anyway. So heat should not be the issue.

Searched the web for a day, but I cannot find any hint as to what the issue might be. 

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