intel pentium d processor with 3 ghz speed and 1gb ddr2 nvidia geforce9400gt graphics card and i have 2 gb of ram but still just cause game lags at 1280*1024 resolution please help me if i have to change any settings and is this configuration optimal to play games like battel field 3
The game lags because your computer is weak. The CPU is old and weak in comparison to what has been released in the past 5 years and the 9400GT is not really meant for games it's more for media.
Your PC fails to meet the minimum requirements for Battlefield 3:
Minimum requirements for Battlefield 3
OS: Windows Vista or Windows 7
Processor: Core 2 Duo 2.4 GHz or Althon X2 2.7 GHz
Graphic card: DirectX 10 or 11 compatible Nvidia or AMD ATI card, ATI Radeon 3870 or higher, Nvidia GeForce 8800 GT or higher.
Graphics card memory: 512 MB
Sound card: DirectX compatible sound card
Hard drive: 15 GB for disc version or 10 GB for digital version
Your PC barely meet the minimum system requirements for Just Cause 2.
Operating System: Microsoft Windows Vista or Windows 7 (Windows XP is unsupported)
Processor: Dual-core CPU with SSE3 (Athlon 64 X2 4200 / Pentium D 3GHz)
Graphics Card: Nvidia Geforce 8800 Series / ATI Radeon HD 2600 Pro with 256MB memory or equivalent DX10 card with 256MB memory
Memory: 2GB RAM
DirectX: Microsoft DirectX 10
Hard Drive: 10GB of free drive space
Optical Drive: DVD-ROM drive
Sound Card: 100% DirectX 10 compatible sound card
Internet Connection: Internet connection required for product activation
Input: Keyboard and mouse (Microsoft Xbox 360 controller optional)