This guide will show you how to allocate more memory for Java, hopefully making your Minecraft run faster. For those that didn't know Minecraft runs on Java.Windows:Now for those people on Windows 8, Vista, and XP once you open up the control panel it should be that same steps for you. How to open up the control panel:Windows 8:1. With a mouse, right-click anywhere on the Start screen and then click All apps.2. On the Apps screen, swipe or scroll to the right and find the Windows System category.3. Press or click on the Control Panel icon under Windows System.4. Windows 8 will switch to the Desktop and open the Control Panel.Windows Vista:Windows XP:Now onto the guide!Step 1:Open the Control Panel: Step 2:Type 'Java' inside the 'Search Control Panel' box. Step 3:Click the Java icon that pops up. Step 4:Click the Java tab. Step 5:Click view... Step 6:Assure there is only ONE line in here, any more lines could cause issues.If you have multiple lines uninstall all versions of Java from your system and download Java JDK 7 from the following link. Make sure to get the x64 version if you have a 64-bit OS.http://jdk7.java.net/download.html Step 7:Change Runtime Parameters.Put '-XmxHOWMUCHRAMYOUWANTTOALLOCATEm'Change it depending on how much RAM you have, it is recommend you use 256/512/768/1024/1536/2048.For 32-bit Operating Systems 768M is recommended.If you have 64-bit, or that doesn't work, continue to try the following1G1536M2GAs I said, this varies depending on how much System RAM you have. Mac: Now I don't own a Mac and I probably never will so I found this video to help: Comments, complaints, concerns?