「 所以應該有1640的水準或更佳」

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根據您所連結的測試報告，其中有一段，是這麼說的：

if we compare it with the previous drive, the 1640, it could be considered more of a downgrade instead of an upgrade.

與1640相較，其水準並沒有提昇，反而是下降，

當然，他也提到因為用的是初始軔體，期待新軔體能改善文中所提到的缺失

We can excuse this for now since all tests were made with the original firmware so we would expect a future firmware release will improve most of the drive's flaws.