1x drivespeed = 150 kbps. 700 mb * 1024 kb/1 mb = 716800 kb
716800 kb / (39 (drive speed) * 150kbps) = 122.52 seconds
//hope im not missing something. those are ideal.
i also have no idea if the 1x drivespeed takes into account the ECC fields. i bet it does, in which case 700 -> 800. the math is all the same, otherwise.