8 uses less resources and support later versions of direct x so that's a must for the best looking games.
Yes windows 8 has a bit of a learning curve but you simply to youtube and watch some tutorials. Great way to pass some times while you wait for your new rig or parts to come.
A quick Google search shows that only 2 games even use DirectX 11.1, Battlefield 4 and Star Trek Online. And aren't the PS4 and XBOne limited to DirectX 11 and 11.1 won't work on them? I was considering going with Windows 8 on my current build mainly because of 11.1 but after doing some research, I found out that nothing really uses it nor are there really any big games in the works that are going to require it. Everywhere I look online, 11.1 seems to be a gimmick to try to get people to upgrade to Windows 8 rather than being something we'll actually get use out of being gamers.
Even if many games don't use Windows 8's features yet there really isn't much point in getting an older OS like Windows 7 unless you really like aero transparency. Windows 8.1 is basically just a slightly refined Windows 7 with a new start menu. --- 15.4" Retina MacBook Pro (Mid 2012) | Node 304 mITX | Gigabyte Z87N-WIFI | Intel Core i5-4670K | Asus GTX 760 | Corsair 1x8GB | EVGA 600W | 120+64GB SSDs
From a pure performance standpoint Windows 8.1 is the best OS to have for gaming, hands down. Anybody who says otherwise has a bias. --- 4670k | 2GB GTX 770 OC | 8GB 1600 9-9-9-24 | 120GB SSD | 1TB WD Blue | Win8.1 Pro http://i597.photobucket.com/albums/tt56/S26DG44B/PsythikViolet_Blooded.jpg