APB, otherwise known as All Points Bulletin, has some reasonable minimum system requirements but suggests some pretty stiff recommended cpu requirements.

APB Minimum system requirements

REQUIRED: Internet Connection of 256kbits/sec

PC OS: Windows XP, Windows Vista, Windows 7

CPU: 2.13GHz Core Duo 2, Dual Core

RAM: 2GB RAM

HARD DRIVE: 15 GB

DVD-ROM: 8x Speed

VIDEO CARD: 7800 with 256Mb and support for Pixel Shader 3.0, or ATI equivalent

SOUND CARD: DirectX compatible

DIRECTX: 9.0c

INPUT: Keyboard, Mouse, Headset with microphone required for Voice chat

APB Recommended System Requirements

CPU: 2.4GHz Core Duo 2, quad-core,

RAM: 4GB RAM

VIDEO CARD: GeForce 8800GT with 512MB or ATI equivalent.

Broadband Connection recommended.

APB Laptop Requirements - chipsets may work but are not supported. Updates to your video and sound card drivers may be required.