I have a Core i7, 6GB of RAM, etc... it's a high end gaming rig, it's more than capable of this.
Tatsujin, that pops out a really high quality result, but the file size is beyond massive... like 1.6GB for 7 minutes (wayyyyyyyyy too big), and... for some reason it has no audio? Also, the closest to yours I can get is with 24 bit audio for some reason. I don't even see where you choose the audio bitrate, it's not in the audio tab, just the kbps & hz.