Download, run, go to Options tab, type in desired Ram.
Note: Setting runs as double. If you put 2048 (2GB), it will have up to 4GB of memory for the game.
Click Patch, Play Game, Have Fun!
Download: MCPatcher HD
Forum of MCPatcher HD
****Note: If you do not know how much ram you have, right click your My Computer icon, click Properties and it will tell you there. DO NOT USE THE SAME AMOUNT OF RAM AS YOUR COMPUTER SAYS YOU HAVE. Use less. If you have 2GB of ram, stay with 1024mb for Minecraft. Always try to leave at least 1 1/2GB to 2GB of free ram for your computer's background processes.
If you have only 1GB or less, either upgrade/replace your computer or do not bother with fixing your Minecraft problem.
- 1GB = 1024MB
- 2GB = 2048MB