Instructions
Look on the back of your PlayStation 3 for a white product label. Look at the lower-left corner of the label for the model number. The PS3 model number begins with "CECH," followed by a string of letters and numbers.
Visit the PlayStation 3 support page (see Resources).
Click the model number of your PS3 under "Instruction Manual." The manual will open.
Scroll down to the "Specifications" section and look at the CPU specifications.