Hello everyone!
I missed A4 update, but B1 is here, so i'll just post B1 instead. Sorry for the late update!
This mod act as a "booster" for minecraft. This mod can disable some features of minecraft to make it run smother and faster. Usually, you'll get up to 3x boost using this mod. This mod can also replace MCPatcher function in the using of HD Texture Packs, awesome!
(WARNING: Use Optifine OR MCPatcher, using them both WILL crash your minecraft!)
How to install Optifine manually for 1.6.x (Windows):
Link
OF HD U B1
Happy Minecraft-ing guys!!