@Rob ,
seems to me there is a power leakage somewhere or a faulty measuring. 30 watts, even with the power button from the power supply off? that seems not normal to me.
I have the CX430 (before v2) and a cresta RC-1106 watt-meter
http://www.cresta.nl/index.php?Itemid=2&option=com_zoo&view=item&category_id=25&item_id=138〈=nl
http://www.kijkshop.nl/product/21159/295-1276/merkenshops/cresta/cresta-energiekostenmeter-rce-1106/
My Un-Raid server is just having his montly parity check,, but will measure mine with power button off and come back to you on this tommorow.
What kind of measering device / watt-meter do you use?
i read that there a lot low budget watt meters on the consumer-market which have huge differences in measuring wattage comparing actual usage. especially with lower wattages
example actual use 50 watts ( by an professional labo device) Brand A says 70 watts ,, and Brand B says 25 watts.
Reading from your e-mail adres you're from NL , so you can read this.
http://nl.hardware.info/nieuws/14165/testresultaten-energieverbruiksmeters
English:
http://babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bf-home&trurl=http%3A%2F%2Fnl.hardware.info%2Fnieuws%2F14165%2Ftestresultaten-energieverbruiksmeters&lp=nl_en&btnTrUrl=Translate