Hard Drive Size
Any 2.5-inch SATA notebook-styled hard drive is compatible with the PlayStation 3. Larger-sized hard drives cannot be used with the PlayStation 3 as the hard drive will not fit in the PS3 case. Solid-State drives also are not compatible with the PlayStation 3.
Data Storage Size Compatibility
The PlayStation 3 is able to recognize and utilize hard drives of any data size. The system can be purchased with a hard drive up to 250 gigabytes in size, but all size hard drives are supported as long as they are 2.5-inch SATA drives.
RPM Considerations
The hard drive included on the PlayStation 3 runs at 5,400 rpm. A faster 7,200 rpm hard drive is compatible with the PlayStation 3 as well.