SPMUG 626 Checking Processor Speed

Q. I need to add more memory to my computer, but the Web site that sells
the memory chips asks what processor and megahertz speed I have. I don't
have the manual anymore, so how do I find this out? A. With so many
different computer systems around now, many online memory shops like
Crucial (www.crucial.com) and Kingston Technology (www.kingston.com)
offer to walk you through buying the correct chips for your particular
system. As part of this process, you are usually asked to fill out an
online form that specifies the make and the model of your computer, as
well as the processor your machine uses.

You can check your computer's processor and speed fairly quickly from
within the operating system so that you have the information handy for
your memory-shopping trip.

On a Macintosh running the Mac OS X system, go to the Apple menu in the
top left corner of the screen and select About This Mac to see the
system and processor information. Click the More Info button to see a
detailed list of your Mac's hardware and software components.