Premiere encode in h264 using "ultrafast" preset
Not out-of-the-box as far as I'm aware. Those presets are specific to the x26* encoders. Premiere bundles Mainconcept's H.264 encoder. You can try third party plugins which allow one to use x264 from within Premiere:

https://sourceforge.net/projects/x264vfw/

http://www.x264pro.com/