Two SSDs,which are exactly same, but sequential write performance varied widely?

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I bought two SSDs,which are exactly same, but sequential write performance varied widely? sdb is the first SSD, sdc is the second SSD, and partitions are same(both sd*1 and sd*2)

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and the sdb1's sequential write is 223MB/s but the sdc1's sequential write is only 161MB/s

What could be the cause of this?

吕鹏程

Posted 2013-10-15T15:50:24.213

Reputation: 9

1both are connected to SATAIII ports? – Ramhound – 2013-10-15T15:51:55.233

Try and change the ports over. On my motherboard there are 4 SATA3 ports and 2 of them are from a different chip and are slower. – Richard Powell – 2013-10-15T15:56:06.820

swap sata cables and test again? perhaps a bad cable? – Keltari – 2013-10-15T15:56:09.097

also, are they at the same firmware revision? – Keltari – 2013-10-15T15:57:32.757

Answers

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A write may or may not require an erase.

David Schwartz

Posted 2013-10-15T15:50:24.213

Reputation: 58 310

Asked: 2013-10-15T15:50:24.213

Viewed: 77 times

Active: 2015-11-06T01:20:07.197