This APPEARS to be your PSUhttp://www.h-online.com/priceinsight/eu/?pg=2&a=277831
Man it was rough finding specs on it, most of the sites are in german.
If this is it, you have a 20a 12v rail (and also an 18a one, split 12v rails is dumb design, esp for a low wattage PSU). the 20a can handle either of the 240 or the 6570.
Look on the sticker on the side of your PSU to confirm this though! you should see something like +12v@20a.