agree sound card makes all difference, my new pc spec for this game is

corsair 800d case
corsair 1050w power supply
gigabyte z68xp-ud3 motherboard
intel i7 2600k clocked at 4.5ghz
asus zonar soundcard
asus 580gtx graphic card
corsair h100 water cooling
kingston grey 8gb ram
ocz vertex 3 ssd hard drive

the game runs ona ll high and runs like a dream with no heating heating issues and very fast, ive been playing the game for 3 days now its just insane so much going on everywhere and the graphics are amazing in every detail