Things You'll Need
Instructions
Turn the PSP Slim over and you will see that the PSP Slim back has a shiny plastic surface when compared with the matte black rear on the original PSP.
Measure the width of the PSP Slim against that of the original PSP. The PSP Slim is 19 percent thinner than the original PSP.
Weigh the PSP Slim against the original PSP. The PSP Slim is 33 percent lighter than the original PSP.