How good of a computer is...?

I've built a custom gaming PC online and i was wondering, what type of performance levels am i going to be looking when it comes to games like Guild wars 2, Total war 2, Sims 3. Thanks:) CPU: Intel(R) Coreâ„¢ i7-3820 Quad Core 3.60 GHz HDD: 1TB SATA-III MEMORY: 32GB DDR3/1600mhz (Could you also explain the difference in mhz?) MOTHERBOARD: Asus P9X79 LE Intel GRAPHICS: NVIDIA GeForce GTX 770 2GB FAN: Corsair Hydro Liquid Cooling If you need more specs i'll put them up. Thanks again!