Id be really surprised if you could even run it at 16-20x.
I had an old p1 133mhz that could barely hack 1x. Even then, if it was audio, it had to be burned from mp3s or the resulting cd wouldnt play without skips.
BUt if i burned at 2x, it would get a buffer under-run. You could probably buy a faster cpu for real cheap that would fit your mobo. Or buy a slower burner.
You have to let it all go. Fear, doubt. Free your mind