Computer geeks ! Can you help me identify the power consumption in watts of the following hardware components?

Based on the limited amount of information provided, nobody would be able to give you an accurate answer, and it will depend greatly upon what the demand on the system actually is from the program(s) running. What you list won't need much power to run, but if you are looking to buy a power supply, 300 watts is a fairly standard power supply off the shelf from computer parts stores or eBay.