the description of the program lists needing a dual core processor
Your best bet is to download the free trial version and test it yourself. I suspect Magix list a spec that will be satisfactory for the modern high definition video formats. I have worked successfully on a lesser machine -- I just didn't have such good preview response. That said, MEP 2013 has the option to render sections of the timeline so that playback of say complex transitions is smooth.
I agree with cpc000cpc. Download the trial and load a project to see how it erforms on your system.
I have a Pentium 4 HT 2.8 GHZ whichis below the minimum recommended system requirements. To edit HD Video I need to use proxy editing which is not a big deal. Overall I am very happy with MEP 2013.
thank you for the info, where can i download a trial version?
http://www.magix.com/gb/free-download/ For whatever reason, the US site isn't listing MEP just now.