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Seraphic_Sixaxis said:
So again... what is RPM????

Revolutions Per Minute

It's just how fast the disk spins in the hard drive, the faster it spins the quicker the information gets sent or received. The only advantage a 7200 RPM hard drive would have on the PS3 is when you have to Install some games, it'll be slightly faster on a 7200 RPM HDD then a 5400 RPM HDD. Not really worth it in my mind, theres barely any games that require installing, and it's not that big of a difference. A 5400 RPM would be cheaper anyway so.