Minimum System Requirements OS: Win 7 SP1, Win 8.1 (64-bit Operating System Required) Processor: Intel Core i5-750, 2.67 GHz | AMD Phenom II X4 965, 3.4 GHz Memory: 6 GB RAM Graphics Card: NVIDIA GeForce GTX 660 Graphics Memory: 2 GB DirectX: 11 Network: Broadband Internet Connection Required Hard Drive Space: 45 GB Recommended System Requirements OS: Win 7 SP1, Win 8.1 (64-bit Operating System Required) Processor: Intel Core i7-3770, 3.4 GHz | AMD FX-8350, 4.0 GHz Memory: 8 GB RAM Graphics Card: NVIDIA GeForce GTX 760 Graphics Memory: 3 GB DirectX®: 11 Network: Broadband Internet Connection Required Hard Drive Space: 55 GB ULTRA System Requirements OS: Win 7 SP1, Win 8.1 (64-bit Operating System Required) Processor: Intel Core i7-3770, 3.4 GHz | AMD FX-8350, 4.0 GHz Memory: 8 GB RAM Graphics Card: NVIDIA GeForce GTX 980 Graphics Memory: 3 GB DirectX: 11 Network: Broadband Internet Connection Required Hard Drive Space: 55 GB 55GB of hard drive space is pretty hefty, especially for you SSD owners out there. And recommending 3GB of graphics memory seems a bit steep as well, although if you've been preparing for some of PCs biggest games this spring, like The Witcher 3 and Grand Theft Auto 5, we have a feeling you're probably ready to tackled Arkham Knight as well.