PCI card question

[GroggyTech]

Regarding the Startech 2-Port SATA III 6Gbps PCI-Express Controller Card (PEXSAT32) http://www.overclockers.co.uk/showproduct.php?prodid=CC-004-SR&groupid=701&catid=49&subcat=424

My motehrbaord is the asus p5q pro turbo http://www.asus.com/Motherboards/Intel_Socket_775/P5Q_PRO_Turbo/

Would this card fit into the black, LONG PCI E card which i think is X8?

Also would this then allow me to have the full benafits of the Card; as in not limited to 250MBPS with PCIEX1 (the white small ports)?

 

[Orcvader]

The card is PCI-E x1 anyway, no matter which PCI-E slot you hook it up to, it will still be running in x1 mode.

Is it really worth it? With 3rd party controllers you usually never get the full SATA 3 speeds.

 

[Tealc]

It'll fit in a x8 but will be limited to the x1 PCI v2.0 bandwidth of 500MB/s and the Marvel chipsets aren't always a good thing. I looked at these when I went SSD but in the end didn't bother. I remember looking at some benchmarks with these and they ended up slower than using a SATA2 connection on more than a few occasions.