So, lowering the settings give better framerate ? Never heard about this before...

This is not about whether lowering the settings gives more framerate, this is about "which setting" and "what happens", and "under what circumstances"
The official minimum system requirements is usually "just enough to run" requirement, and is sometimes terribly misleading, due to the fact that monitor resolution is sometimes a deciding factor, and people just can't make a list for every resolution out there
For example, with Oblivion my rig would give around 30-40 fps, despite the fact that I'm a few years ahead of the game and can play CRYSIS Warhead at Enthusiast with ~50 fps. Lowering most of the settings don't give me any performance improvement (resolution, anti-aliasing, shadow quality, etc etc)
I'm posting my setup and settings to give people better insight as to
what the game actually requires with various circumstances. It is most likely that Bethesda created the system requirements list while referencing rich gamers with dual GPU and latest 6-core CPU along with triple 40" monitors (5760 x 1080 resolution. Dang! I'm jealous!) and ungodly amount of RAM, which will make gamers with low budget such as me shudder in fear of not getting playable framerate
My case proves that Skyrim is not actually THAT demanding. With the right setup and the right choices, you can play with awesome framerates while still enjoying the 2011 graphics, even if your setup is not that "gamer through and through", provided that you can bear it (I've seen people with SSD hard drives, i7 CPU, and dual GPU setup complaining about getting 40 fps at cities. "Playable framerate" is subjective indeed)