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I bought a new SSD, the Crucial 128GB m4. According to AS SSD Benchmark it can have 415 MB/s read and about 175 MB/s write.
I have an Asrock X58 Extreme Mainboard with 6 onboard SATAII connectors. So I thought I need a SATAIII Controller, so I bought and Asrock SATAIII PCIe Controller.
Now the speed on the SATAIII is much too slow, 150 MB/s read, 105 MB/s write. I've installed the latest drivers from Asrock.
When I plug the SSD into the on board SATAII Controller I have 360 MB/s read and 175 MB/s write speed.
What is wrong with it? Why is it not performing as it should?
What speed is the PCIe slot you've plugged into? – None – 2011-09-04T23:15:35.223
It's an Asrock X58 Extreme, in the specs it says "PCI Express x1" – JohnnyFromBF – 2011-09-05T07:43:17.423