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samsung 960 EVO write speed issue

Sokki
By Sokki
in Storage Devices
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Hello,

 

i bought new samsung 970 evo 1TB and tried to compare write speed with my older 960 EVO 512GB (system disk). I duplicated same file on both drives to see differences.

MB is ASUS ROG STRIX Z370-F, 960 EVO is in slot m.2_1 (one with passive heatsink) and 970 EVO in m.2_2.

970 EVO gets quite hot  (around 71-80 °C) but 960 EVO stays cool around 45 °C but write speed goes up and down like on swing (see file attached).

Both drives are running in x4 mode.

 

Anyone any ideas why 960 EVO behaves like this?

 

samsung_960_EVO.PNG.5b739b4a94f0930610ea1f5db1fe0c7e.PNG

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https://linustechtips.com/topic/1131119-samsung-960-evo-write-speed-issue/
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