Looking at purchasing a low budget Dell Inspiron 17R (6gb memory,500-640gb hard drive, i5 process), but would like an option for a 7200 vs 5400 rpm hard drive. Is it worth paying potentially another 150.00 for a $700-$800 (base price) computer?
5400 is slower, i have a 5900, what your main problem is, the first time you open a program/tab ect. your going to encounter a longer load screen than you would with a 7200, but after that long load screen, the 7200 will be no jumpier
and windows may take longer to load... by the money you save running 2000rpm slower, you eat up enough power waiting longer to outmatch your savings
or if you feel like it, you could get the 5400 one, and buy a 7200 or 10k rpm drive later for cheaper XD... and when it comes to building a pc outta parts, if your not careful it can cost you more than its worth
edit, guy above got it first, didnt read all the way through his