Are you using the .exe version of minecraft or the .jar?
Try the jar and run it like this:
- Code:
java.exe -Xmx2048M -Xms1024M -cp Minecraft.jar net.minecraft.LauncherFrame
(you may need to directly speficy the path to your java.exe, like C:\program files\sun\jre1.6.20\bin\java.exe, if the path has spaces, surround the C:\...exe part with "")
If you feel like trying to get the most performance out of java add these parameters:
- Code:
-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=8 -XX:+AggressiveOpts
Replace the 8 in "ParallelGCThreads=8" with how many CPU cores are available.