My Specs:
Processor: Intel(R) Core(TM) Duo CPU 2.00 GHz
RAM: 4GB
System type: 64 Bit

Options: Music :OFF Others Optional

Video Settings:
Graphics: Fast
Smooth Lighting:Minimum
Smooth Lighting Level: %50
GUI Scale: Normal
Brightness: Bright
Fog: OFF
Server Textures (Optional)
Render Distance : Small or Normal (Which ever is best)
Performance: Max FPS
View Bobbing: OFF
Advanced OpenGL: Fast
Chunk Loading: Smooth
Fog Start: (Default) 0.8
Details:
Clouds: OFF
Trees: Fast
Water: Fast
Sky: OFF
Sun & Moon: On
Depth Fog: Off
Dropped Items: Fast
Cloud Height: OFF
Grass: Fast
Rain & Snow: Fast
Stars: Off
Show Capes: (Optional)
Animations:
Terrain Animated: OFF
Rain Splash:OFF
Void Particles: OFF
Portal Particles: OFF
Particles: Decreased
Quality:
Mipmap Level: OFF
Clear Water: OFF
Better Grass: OFF
Custom Fonts: OFF
Swamp Colors: OFF
Connected Textures: Fast
Custom Sky: On
Mipmap Type: Nearest
Antialiasing: OFF
Random Mods: Off
Better Snow: OFF
Custom Colors: On
Smooth Biomes: Off
NAtural Textures: OFF
Performance:
Smooth FPS: ON
Load Far: OFF
Chunk Updates Per Frame: 1
Lazy Chunk Loading: OFF
Smooth World: ON
Preloaded Chunks: OFF
Dynamic Updates: OFF
Other
Lagometer: OFF
Weather: OFF
Full Screen: OFF
3d Anaglyph: OFF
Debug Profilerr: OFF
Time:Default
Full Screen Mode: Default
Autosave: 3min