3 gb/sec hdd? whats the difference....

[Shafted!]

whats the difference between the following:

http://www.newegg.com/Product/Product.asp?Item=N82E16822152020

http://www.newegg.com/Product/Product.asp?Item=N82E16822152015

one says 3 gb/sec and the other one simply says sata.

i want to set up a raid0 array for a sff pc, and im quite confused about the difference between the two hdds.

thnx

 

[O-P-M]

One is SATA 150 and the other is SATA II which is the 3.0gb/s transfer rate I assume.