Here is the screen shot with the "Edit Quailty Present" Box open. The first preset has been selected. The estimated file size (3430 MB) is shown above and to the left of the "Cancel" button. If I "Build" from this preset the resulting file size is 5.4 gig.
The project is all SD, start to finish. The codec in the Quality Preset is shown as "MainConcept MPEG Video"