Call of Duty (2003) system requirements state that you will need at least 128 MB of RAM. An Intel Pentium III 1400 @ 1400MHz CPU is required at a minimum to run Call of Duty (2003). You will need at least 4 GB of free disk space to install Call of Duty (2003).
Call of Duty Black Ops system requirementsstate that you will need at least 12 GB of free disk space available. An Intel Core 2 Duo E6600 CPU is required at a minimum to run Call of Duty Black Ops. Provided that you have at least an NVIDIA GeForce 8600 GT graphics card you can play the game.