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h21j3 posted a topic in ATiSo after installing Mavericks 10.9 using Niresh onto my desktop I couldn't seem to get the integrated Intel 4600 HD graphics to work. After spending hours upon hours on that I finally decided to get an XFX Radeon 7850 1gb card since it was pretty cheap and I wanted to get one anyway. I installed the 2 kexts required for the 7850 cards using ##### and then rebuilt the cache and repaired permissions using kext wizard. The graphics card is now being recognized in About This Mac as AMD Radeon HD 7850 1024 MB. The problem is that it is not being used because visually everything is still choppy and slow like how it was before I put the card in. I tried most of the stuff in the forums but none of it seemed to work, or maybe I am just stupid. Any help to get this thing working is greatly appreciated. Thanks! Motherboard - Asus Z87-PRO http://www.newegg.com/Product/Product.aspx?Item=N82E16813131979&cm_re=asus_z87-_-13-131-979-_-Product Graphics Card - XFX Core Edition 7850 1gb http://www.newegg.com/Product/Product.aspx?Item=N82E16814150642&cm_re=7850-_-14-150-642-_-Product