Hello, fellow Users. Need your advice on a little aspect. iStat reads as follows. ODD 800 rpm CPU 1200 rpm HDD 1600 rpm Normal HDD temp varies around 50C during normal usage, and around 40C during little usage. Using the WD Black Caviar 1TB. Is that normal? Should I reduce the fan speed? Haven't used SMCFan Control yet. Thanks for any help.