It does, you just have to do a little looking for the info. Enter chrome://system in the address bar as Sveta said, then scroll down the list until you see "uname." Read the line to the right of "uname" and you will see something like "x86_64 Intel(R) Celeron(R) CPU 3215U @ 1.70GHz." The 64 indicates that this Chromebook is a 64 bit machine. Obviously, the specifics of this line will be different on different models of Chromebook.