MANOFKRYPTONAK :
Low with FXAA @ 1080P is fine for recording, IMHO.... obviuosly you think I don't know what I am talking about
I was pointing to what the OP is requiring as the specifics. While you feel is 'fine' and what we both may disagree on 'just being able to play the game is fine enough' it doesn't matter if the OPs goals aren't met.
I noted the link to show specifically I knew what I was talking about, and again the three specifics the OP demands is;
1) capable of playing games at decent quality - Which is HIGH and above setting graphics, we don't get the option here to bump down to Medium or Low, the OP wants the 'eye candy'
2) recording gameplay - While the i5 does a okay job, the i7 would be better, and by all the 'major' people doing this very thing, they ALL had to face they needed a i7 to do recording. This bumps it up above the OPs budget.
3) without lag - I have watched and read too many of the Twitch.TV people talk about how they went and recorded, etc. with a low end GPU only to see lag and low FPS to think they are making it up as your saying. Any recording cuts the performance in half on FPS, this is the basic formula shown time and again (yes looking at the same game footage with different cards and see different FPS shown via FRAPS/MIS Afterburner/etc.).
So all I am saying is, if OP goes 750ti, yes they can "play" the game, in crappy low graphics, get low FPS, and soon as they go recording, BOOM lagging especially during high demand scenes, got forbid he decides to record a Helipod explod on his head in a 64Man Map in BF4.
OP wants what he can't "afford" and either needs to change expectations or increase budget, or best solution, go CONSOLE, and can do EVERYTHING he asks for (including recording) all way below his budget