First of all, you should of course check whether the selected processor can be placed at 2.00 GHz in the base of the used mainboard. Especially for OEM systems, therefore, all compatible CPUs are listed directly by the manufacturer, which makes the search especially easier. See the manual and other online resources for more information.
In order to assess the performance better, however, caches and core numbers should also be considered. In addition, 2.00 GHz CPUs are available for notebooks as well as desktop PCs, workstations and servers. Therefore, you can also search directly for the model numbers or product series, in addition to the clock rate, in order to narrow down the selection.