Jesus christ. He is running that on old Sandy Bridge 2500K @ 4.8ghz, 8GB Ram and a Radeon R9 280X. (7970/8970/280X/380 class GPU.)
Some good performance if you have a semi-modern rig. Not to mention he has increased the visuals over the base game. (Higher Resolution, Higher Resolution textures, Anti-Aliasing, Texture filtering etc'.)
--::{PC Gaming Master Race}::--