SATA 3 PCIe Controller working with decreased performance (slower than SATA 2)

Posted by V M on Super User See other posts from Super User or by V M
Published on 2014-06-09T08:43:02Z Indexed on 2014/06/09 9:28 UTC
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Filed under:

hard-drive

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ssd

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motherboard

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sata

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pci-express

After reading this question about maxing out an SSD I decided to do so myself.

My mobo only supports SATA 2 and has two PCIe 2.0 x1 connectors (which promiss up to 500 mb/s). So after some searching I decided to go with this controller from amazon.

My Samsung magician benchmark before upgrade (running SATA 2):

enter image description here

Now after installing the controller all of the benchmark scores are lower (even though the Samsung Magician app confirms its connected to a SATA 3 port):

enter image description here

What can I do to remedy this? Any help is appreciated.

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