Narcissists need not apply. After adding two Samsung F1s (750GB), my temperature has shot up 5 degrees. I usually run around 30c but now it's 35/37celcius. I also have two AAKS 500GB in the other bays but I've ran 4 (AAKS's) since I bought it but the Samsungs really surprised me. Oddly enough, iStat reports the WDC hotter than the Samsungs. EDIT: sorry if there is fuzzy logic there. I had previously ran 4 WDC AAKS which iStat reports as running hotter than the Samsung so I don't understand how replacing two WDC with cooler Sammy's could yeild higher temps. I will however retract my previous posting as it seems the temp are back to 30s after idling a bit. So temps are more or less kosher.