I7 4820k performance issues

Pocketn64

Honorable
Sep 28, 2013
5
0
10,510
So, i just got myself a new gaming pc. It uses windows 8(64 bit) as OS and it has 16 GB DDR3 RAM, an i7-4820k processor, Asus P9X79 LE motherboard, Gainward Nvidia GTX titan(4GB), 215 GB SSD, 2TB seagate barracuda.

And when i am doing even the simplest thing, my pc starts lagging slightly, and it annoys me a bit. I tried running a game like The Elder Scrolls V: Skyrim on High settings, and it doesn't seem to lag all that much. But when i try playing League of Legends, i cant even play without getting 25-35 FPS on Very Low settings.

Now, my real question is that i tried checking my processor with CPU-Z, and it says "Cores:1, Threads:2."
Should this be the case?