To run Moonlight on high graphics settings your PC will require at least a 1GB GeForce GT 630 / Radeon HD 5570 1024MB with a Core 2 Duo E4400 2.0GHz or Athlon 64 X2 Dual Core 4200+ CPU. 4 GB will also be needed to achieve the Moonlight rec specs and get 60FPS. Moonlight needs a graphics card thats at least as powerful as a GeForce 8600 GTS 512MB/Radeon HD 4650 paired with Athlon XP 1700+/Pentium 4 1.8GHz CPU to match the min specs. This PC setup will deliver 25-35 Frame Per Second at Low graphics setting on 720p resolution. To be able to run at all you will need at least 2 GB system memory. Your GPU is expected to be able to deliver DirectX 9.00. We suggest a 12 year old PC to play smoothly.