This is the computer I bought: http
/www.newegg.com/Product/Product.aspx?Item=N82E16834312439
However, the hard drive is sub-par as it is 5400 rpm. Could I just buy a 7200 rpm hard drive on newegg and replace it? If so, a link to a compatible hard drive would be appreciated.

However, the hard drive is sub-par as it is 5400 rpm. Could I just buy a 7200 rpm hard drive on newegg and replace it? If so, a link to a compatible hard drive would be appreciated.