Hard Drives, speed, pricing. differences/etc?

Isol asked:


I have this Hard Drive (320GB)
http://www.wdc.com/en/products/products.asp?driveid=299&language=en

I am looking into this one as a new MAIN HD (1TB) .. using the first as a slave
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136284

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My board has 4 SATA ports
1 - Main HD
2 - Optical Drive
3 - empty <-- looking into the new HD here
4 - empty

But I was thinking of making the 1TB HD the main and the 320GB the Backup .. is this a good idea?

And is the 1TB HDD a much better device than my original HD? Speed wise .. and such?
I thought the same thing til I looked it up .. and some process info faster than others and etc.

Learn something new everyday.

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