Short answer : yes! Long answer : in a certain limited case, it could be different. Maybe you are using your PC mostly during the day, and your house is badly

Short answer : yes! Long answer : in a certain limited case, it could be different. Maybe you are using your PC mostly during the day, and your house is badly insulated so most of the heat from the PC is lost. At night, you turn on the heating. Using the PC during the day has no influence on the amount of heating in this case.