Raid 0 question

[PZEROFGH]

when you do raid 0 i know how it works but does the drive have to be exactly the same?

like i have one 80GB hdd, and im planning on getting a second 80GB hdd but they dont have the exact same one is that ok?

http://www.newegg.com/Product/Product.asp?Item=N82E16822148040
what i have out of stock.

http://www.newegg.com/Product/Product.asp?Item=N82E16822152018
can i get this and raid this with the seagate barracuda hdd?

and do you guys think raid 0 is worth it? will i see speed increase. as reading and saving data onto the hdd will be quicker?

 

[m3trj]

As long as the drives are the same size then it'll work fine. However I doubt you'll see a big noticable increase in speed.

 

[PZEROFGH]

so would you say its a waste of moeny to go in raid 0. i should either buy a bigger hdd for storage. and use the one i have for the OS?