I have an eden 533 (in a box somewhere - not in use anymore!) but have never tried powerstrip. However before I learnt that powerstrip could specify custom resolutions I had to modify my geforce detonator drivers to support the native pal and ntsc resolutions. To do this I had to modify an INF file that installed the driver. If you want me to try and add this res to your inf file, please e-mail or PM me the inf file from the driver you have.