diff --git a/CmlLib/Core/Launcher/MLaunchOption.cs b/CmlLib/Core/Launcher/MLaunchOption.cs
index 84a252d..a528cc1 100644
--- a/CmlLib/Core/Launcher/MLaunchOption.cs
+++ b/CmlLib/Core/Launcher/MLaunchOption.cs
@@ -6,13 +6,25 @@ namespace CmlLib.Core
 {
     public class MLaunchOption
     {
+        public MLaunchOption()
+        {
+            if (MRule.Arch == "64")
+            {
+                MaximumRamMb = 2048;
+            }
+            else
+            {
+                MaximumRamMb = 1024;
+            }
+        }
+
         public MinecraftPath? Path { get; set; }
         public MVersion? StartVersion { get; set; }
         public MSession? Session { get; set; }
 
         public string? JavaVersion { get; set; }
         public string? JavaPath { get; set; }
-        public int MaximumRamMb { get; set; } = 1024;
+        public int MaximumRamMb { get; set; }
         public int MinimumRamMb { get; set; }
         public string[]? JVMArguments { get; set; }
 
diff --git a/CmlLibCoreSample/Program.cs b/CmlLibCoreSample/Program.cs
index 74b37d1..da7ab28 100644
--- a/CmlLibCoreSample/Program.cs
+++ b/CmlLibCoreSample/Program.cs
@@ -65,9 +65,9 @@ void Start(MSession session)
 
             var launchOption = new MLaunchOption
             {
-                MaximumRamMb = 1024,
                 Session = session,
-
+                
+                //MaximumRamMb = 2048,
                 //ScreenWidth = 1600,
                 //ScreenHeight = 900,
                 //ServerIp = "mc.hypixel.net",