In Cliffs of Dover Forum there is a post which purpose is collect data we may use to give anwer to the question in subject

Just five simple questions

1) Is your PC fast enough to run COD? - Yes / No
2) Do you have a copy of - CoD? Yes / No
3) Have you installed it? - Yes / No.
4) Did you configure it? - Yes / No
5) Are you making practice with CoD? - Yes / No

If you have not already done it, please go here and leave there your answer.
Not a big waste of time, it will take just few seconds