Just because it writes "boost" it doesn't mean it'll bring a noticeable advantage... "I know from personal experience".
I didn't always have a 290x, you know?
The question was about if the OP could run Skyrim, and how much it would be distant from console quality.
You answered that, and nicely enough; he can run Skyrim, but he won't get much further than console quality without mods, so it'll depend on him. I was simply pointing our that modding, IMO, is not an option for him, if the objective is to increase visual quality.
I know of the mods you posted, and there are plenty more fixes and unofficial patches, not to mention the optimized HRDLC packages that correct the redundancy madness Bethesda made on their own. They can indeed improve the OP's performance, if tweaked "ad-hoc", but adding up other stuff to actually improve visual quality to surpass consoles is a bit too much for his hardware, since it is the only way to get a noticeable increase in quality. Maxing the vanilla game MAY be possible with the guides and mods you mentioned, but he'll still be close to console detail, even with the optimized HRDLC.
I never spoke "in generalities", I merely spoke my own take on the matter, and I still am.