Earlier today, Vince Zampella again took to Twitter to reveal the minimum system requirements for the PC version of Titanfall.
  • OS: 64-bit Windows 7/8/8.1
  • CPU: AMD Athlon X2 2.8GHz or Intel Core 2 Duo 2.4GHz
  • Memory: 4GB RAM
  • Video: 512MB VRAM - Radeon HD 4770 or GeForce 880GT

Those minimum requirements don't sound too harsh. Remember that it's running on the Source Engine.