Man these specs are pretty beefy. It's been a while since a game came out that I couldn't run on the 'monster' PC I built a zillion years ago, but Far Cry 3 looks like it may be one of them.
DirectX9c graphics card with 512MB Video RAM Dual core CPU 4GB Memory
Example minimum 1 (NVidia/Intel) NVidia GTX8800 Intel Core2 Duo E6700
Example minimum 2 (AMD) AMD Radeon HD2900 AMD Athlon64 X2 6000+
DirectX11 graphics card with 1024MB Video RAM Quad core CPU 4GB Memory
Example recommended 1 (NVidia/Intel) NVidia GTX480 Intel Core i3-530
Example recommended 2 (AMD) AMD Radeon HD5770 AMD Phenom II X2 565
Latest DirectX11 graphics card Latest quad core CPU 8GB Memory
Example hi-performance (NVidia/Intel) NVidia GTX680 Intel Core i7-2600K
Example hi-performance (AMD) AMD Radeon HD7970 AMD Bulldozer FX4150
I guess I can no longer get by with my pathetic 2GB of RAM. Time to break the piggy bank folks.