if you didnt try any dangerous mods on anything expensive, and your items are under warranty then i wouldnt worry about it.
but in reality, you need to give us more temperatures to help you out. i'd say you're doing damn good if its 40C ambient temperatures.
also, you need to stress test them and tell us how hot it gets under a full load. i.e. run prime95 in 4 different instances (1 per processor core)
with the temps you have given you shouldnt worry too much.. but what are the ambient temperatures (inside the computer case, outside the computer case)... you may consider adding case fans