Brand New Samsung SSD Extremely Slow

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SwifferDusters

Reputable
Oct 28, 2014
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I have recently purchased and installed a Samsung 840 EVO SSD with this SATA III PCI-Express Card. http://www.amazon.com/dp/B005B0A6ZS/ref=pe_385040_121528360_TE_dp_1

I have cleaned and defragged my old HDD before migrating my files onto the new SSD, but unfortunately, my SSD is not performing anywhere near what it should be from what I've researched on the internet. Below is a link to an image with the performance benchmark and my system specs. This performance benchmark is with AHCI-ENABLED and the RAPID Mode disabled.

http://i.imgur.com/yAZOPRx.png

The next link is an image of the Storage tab in Speccy. I have no clue if any of the information below is useful, but I included it just in case.

http://i.imgur.com/KKa8qlq.png

How can I optimize my SSD to perform better (up to its standard), or is this normal? Thank you.

Edit: This is the benchmark when I connect the SSD to the SATA-II port on the motherboard. http://i.imgur.com/Cn7yNpI.png
 
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SwifferDusters

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Oct 28, 2014
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4,510
Sorry, I forgot to include that in my first post. I currently have AHCI enabled and all the benchmarks are with AHCI.

Is that why the PCI-E card is slower than the SATA-II connection? Since the SATA-II benchmark is with AHCI, but if the PCI-E SATA-III card has no support for AHCI, is SATA-II with AHCI faster? Thank you.
 
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mad-max79

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Jul 12, 2012
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You can't reach these numbers with your old system, but it is not important for felt performance. Just connect the drive to the Intel Controller Ports and use AHCI.
With SATA 3 Gb/s your highest throughput can be around 250 MB/s.
 
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