Allocating More Memory To Java
WARNING: Only do this if you have at least 4 GB of RAM and a 64-bit Operating System!
This will allow you to run higher resolution texture packs (128, 256) without crashing. On a 128 x 128 pack I used to crash three times an hour, since this fix I haven’t crashed in days 😀
First, make sure to download and install the x64 version of Java:
Open CONTROL PANEL.
Type ‘Java’ inside the ‘Search Control Panel’ box.
Click the Java icon that pops up.
Click the Java tab.
Assure there is only ONE line in here, any more lines could cause issues. If you have more than one line, delete the older or slower version.
In the Runtime Parameters box paste:
Hit ENTER and click OK.
Find your texture pack at Planet Minecraft!