When I updated my private server to 1. This can be fixed by adding more RAM through JVM Arguments in the Minecraft Launcher. STEP 6: Under JVM Arguments, you’ll see a script on the bar. Minecraft: Gonubax. In the “JVM Arguments” section, the argument “-Xmx2G” determines how much RAM is allocated to your Minecraft game from your computer. And also, the theory that "moar ram=moar FPS" is an absolute fallacy. This is a special startup script that uses JVM arguments to help the Minecraft server run appropriately on the Raspberry Pi. 1 mods>REM Add custom. Even without all of that stuff, Minecraft will run fine. Yes. Notice how the Program Files are different. 2. For default Minecraft launcher users, allocating more RAM is simple: To add RAM, open the default launcher and go to the installation tab. For example, if. In-game: 8. Registered members Current visitors New profile posts Search profile postsStep 2: Edit the Amount of Dedicated RAM to the Minecraft Server. The setup of JVM options I use now is following: -Xmx1024m -Xmx512 -XX:MaxMetaspaceSize=256m. Replace with the following as per requirement: For 1GB — ‘- Xmx1G ‘ For 2GB — ‘- Xmx2G ‘ For 3GB. I have 16 GB of RAM and have allocated 5 GB with Forge Mods. Reaction score. For modern versions, 8 GB (with proper JVM arguments; linked is a good starting point for those) tends to be the best starting point for those who have enough RAM to support it. Here’s a step-by-step guide to changing your JVM arguments: Locate the Minecraft Launcher and open it. In the ‘Profile Options’ section, look for ‘JVM Arguments’ and click on the switch next to it to turn it on. To do this, first open the Minecraft Launcher, and navigate to the “Installations” tab. . Right click on project -> Run As -> Run Configurations. jar as well? I am trying to optimize a home based server setup for my daughter and her friends. STEP 4: To allocate RAM to a Minecraft version, move your mouse over the three dots on the right, CLICK and select Edit. The short answer is that you use these java command-line parameters to help control the RAM use of application: Use -Xmx to specify the maximum heap size. If for whatever reason you need my pc specs lemme know. Semi-hardcore server where respawning takes 2 hours. 6. Add a comment. Toggle on the JVM arguments switch. Most get by very. By default, Minecraft only uses 1GB of RAM, which can really slow things down if you're running a big world with lots of mods. Después, pulse Save en la parte inferior derecha para aplicar los. So I'm looking for good Java arguments to. 121 votes, 26 comments. Below are the JVM arguments. . This number represents the maximum amount of RAM allocated to Minecraft. Is 2GB RAM enough for Minecraft server? 2GB – A fantastic plan if you are also planning to add some base plugins or mods and increase your player base on your server. Después de elegir tu RAM, cambia la parte en JVM Arguments que dice -Xmx2G (o lo que sea que diga), y. i tried using these JVM arguments: -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizeP. 2. In the ‘JVM Arguments’ box, look for “-Xmx2G”. every version should use these arguments, you can find an explanation of them on some old post. Hover over your desired profile/Minecraft version, then select the button with the three dots on the right. Also, from my own experience, the game has always allocated 2. The # sign is the amount of RAM you’d like to allocate to Minecraft (in GB). 10. A continuación, debe ir a la versión que desee (haga clic en Última versión) y marque la casilla Argumentos JVM. With the right settings it should not mater much. 遊戲 依賴庫檔案 以及遊戲資源檔案由啟動器補全。. so whats the problem? This thread is archived. My game was stuttering with 4gb ram allocation so I doubled the allocation in the minecraft launcher window to 8gb, and it runs perfect, however whenever I come back to play the game lets say a few hours later, the ram allocation has reset to its default 4gb, so I have to keep on changing it. 17. The line below shows 3 JVM arguments. In the JVM arguments, select the text highlighted in yellow in the image above. CPU or GPU was a potato. Click on the profile you intend to add more RAM for, and locate the box entitled JVM Arguments. So, I recently found out about directly allocating RAM using some JVM argument. Hello, I tried to modify the Xmx argument in installation to allocate more RAM to Minecraft (my PC has 8GB of RAM). The InitialRAMPercentage JVM parameter allows us to configure the initial heap size of the Java application. For the CPU usage, lock the FPS to 60 in your settings. This will allocate 4GB of RAM to Minecraft. 7gb. Anyways, it doesn't use much more ram. if you need a lot less than the 2 GB of my case, you can still go up to half the maximum amount of what the VPS has; 8 GB in your case. 8 (32. It's easier to play with. Patriot Signature DDR4. To save your modifications, tap “Save. 9. M means megabytes and G means gigabytes. OpenJ9 Run 1: Time for Forge load: 4:01 40% Menu CPU idle 4. Customizing JVM Arguments. -Xmx4G (you can also. then i will downgrade to 12GB so 4 remains. Change the value to alter the amount of RAM allotted. Under the Visual Effects tab,. Click the settings icon in the lower-left corner of the CurseForge window. -Xmx2G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M OR If you want only 1 GB Of RAM allocated to. -XX:MaxRAMFraction, -XX:MinRAMFraction. If your MC is taking 15-20 minutes to load, and is thrashing 100% CPU, you are very likely a victim of this issue. You'll write the allocation in megabytes — so if you want to allocate 2GB, for instance, you'll enter "2048," making the code: java -Xmx2048M -Xms2048M -exe Minecraft_Server. I have 8GB of RAM and a GTX 960 in my machine, but I'm still getting major lag spikes. txt C:UsersuserDesktopOmegacraft1. Desde aquí, ajuste la barra en la sección Memoria de Instancia para asignar RAM. RAM usage cycling to 100% and freezing Minecraft #1 Jun 14, 2020. Scroll down to JVM Arguments, then locate the -Xmx2G parameter. Minecraft creates a lot of short-lived objects, so it is better to set this to a larger value like 40% of -Xmx. Modded Minecraft. It likely depends on the mods in question. 2? (forge with 19 mods and 12 gb ram) I want it to be stable fps and not timing out as often. Realistic Torches - Causes torches to burn out after a configurable amount of time. “2G” in this argument means 2GB of RAM is currently allocated, which is the default for Java Edition. I can't have it doing this, as I only have about 2gb of free ram out of my four gb. 2 gb is a very low amount of RAM I dont think windows can even run on 2 gigs of RAM. In general, we've found that OptiFine reduces CPU usage but increases RAM usage and modpack loading times - please be patient - it typically takes several minutes longer for the modpackpack to load if using OptiFine. Minecraft uses too much RAM [java] I play Minecraft beta 1. Plants which still exist now are set to spawn in the Overworld. Here’s a short overview of how much ram you’ll need depending on the server and mods: 15 players and 25 mods: at least 3 GB of RAM. Minecraft install. Step 4: Find the line that starts with “-Xmx” and change the value after it to the amount of memory you want to allocate. Allocate maximum 512MB to Minecraft, assuming you have enough available RAM to keep the system stable. Go to Edit > More Options > JVM Arguments. 60Mhz and Intel HD Graphics 4000 (integrated) with 1740MB vRAM. -XX:+UseG1GC -Dsun. Fortunately, Minecraft is built on the JVM, and the Garbage Collector is fully configurable. See moreSimply go ahead and edit a profile and where it says "Java Settings (Advanced)", tick all the check boxes. The largest world that can support more than 50 mods, 150 players, and 150 GB in size require at least 15 GB of RAM. Ruudiluca. Remove '-Xmx1G' or the default setting and replace it with the desired amount of ram you want by using the key below (Note: Putting too much RAM may have bad. Ruudiluca. I haven't tried RLCraft, but I'm sure there will be an improvement. Tick the box next to 'JVM Arguements'. The Z Garbage Collector is enabled with the command-line option -XX:+UseZGC. Use the JVM arguments from step 4 below in the JVM Arguments field. The subreddit for all things related to Modded Minecraft for Minecraft Java Edition --- This subreddit was originally created for discussion around the FTB launcher and its modpacks but has since grown to encompass all aspects of modding the Java edition of Minecraft. You will find the memory allocated to it in the number in the text form. if you assign 2GB of RAM to MC and 256MB of PermGen that equals 2. Select the three white horizontal dots. Increase or decrease this value based on your system’s resources. Step 3: Click the button with the three dots for the installation you want to manage. Depends on the modpack. To increase RAM, go to Installations. This will start the game with a maximum of 2 GB of memory allocated. 6. Navigate into Minecraft, and click on the modpack you wish to allocate more memory to. Allocate maximum 512MB to Minecraft, assuming you have enough available RAM to keep the system stable. 30 players and 45 mods: at least 5 GB of RAM. 5 Answers. Minecraft jvm arguments 8gb ram. It entirely depends on the modpack and your computer, so be sure to experiment with different RAM allocations and JVM arguments. I have a quick question for my JVM arguments, I have 16 gb ram, 1660 ti, and an i7 9750h, What would be the best optimized JVM arguments? My current JVM arguments: -Xmx12G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32MThird-party Launcher RAM Allocation: The JVM parameters are located in various places in third-party launchers. server. With no extra programs running here is what each ram amount can give to minecraft. #1. -Xmx e -XX:MaxMetaspaceSize -Xmx é o argumento mais importante da JVM. Em “Configurações de Java (Avançado)”, marque a opção "Argumentos da JVM” para que possa inserir comandos e modificar o Minecraft. Reduce the game's graphics settings and render distance to enhance performance. Method 2: Changing the Allocated Memory for one specific pack. Select the one you want to change the amount of RAM for, click on the. so i have 8gb of memory actually but 2gb of that memory goes to graphics card because it is integrated(yes i know it is dumb) i usually get about 150 fps but for some reason minecraft now started freezing for 0. Though a PermSize of 128m normally suffices if your not trying to make the JVM attempt what I try to do in the OP. -Xmx6g -Xms6g -XX:+UseG1GC -Dsun. Opening GDL: 3. Change “2G” to the amount of RAM you would like to allocate for Minecraft. The main functions of JVM arguments are 2 things, to allocate RAM to the JRE (in this case, running minecraft) and the control the garbage collection of Java. Third -d64 and -client aren't necessary since java automatically just detects the correct shit. Open the Minecraft Launcher and select the "Installations" tab on the top left. txt C:UsersuserDesktopOmegacraft1. Go to Installations and select the latest version of the game. I've assigned MineCraft anywhere from 8GB through 48GB of RAM, and generally it only uses upto 20% of the allocation, regardless of how much I give it. Select Minecraft under the Game-Specific section. Faster Java Arguments. My PC has 16GB installed. Do not put a number beyond 75% of the Physical RAM. I believe Purpur is useful for survival servers due to its extra configuration options. It is running on an Intel core duo core 2. Above the argument for the directory change it to the 64 bit java's directory and then change your argument to - Xmx2048M. Note: This represents the amount of memory to allocate, which is. Click on Browse and pick the SevTech+Ages-3. If we want to set the environment to 64 bit manually, we can do so using the below parameter: -d<OS bit>. If you have 16GB ram or above on your pc you want to allocate 6GB ram to minecraft. "-Xmx3G -Xms3G -Xmn768m" tells Minecraft to use 3GB of RAM. r/feedthebeast •. In most cases, setting a high Heap is actually counter intuitive performance wise. The Xms is the minimum amount if memory while Xmx is the max. 2gb allocated is usualy enough for most people for average use. 18, I had to upgrade the RAM the server host was providing because 2GB just wasn't enough to handle generating all the new caves and terrain without crashing. 將遊戲檔案單獨儲存，而透過啟動器調用JVM（Java Virtual Machine，Java虛擬機器）執行 遊戲主檔案 並傳入一些遊戲參數來啟動Minecraft。. The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms specifies the initial memory allocation pool. However it's important to allocate RAM to Minecraft in moderation—-Xmx4G. . With the normal arguments, it normally should only have negligible effects - but if you set your own arguments it can give you serious lag-spikes cause now the JVM garbage collector has to run through a few gigabytes of RAM instead of a few megabytes. Select the Installations tab towards the top of the launcher. OptiFine. The 2G portion of that denotes the 2GB of RAM that Minecraft has allocated to it. I've altered my paging files sizes from being automatically managed, to specific. There should be a checkbox called “JVM arguments”, check that and input: -Xmx2G to give 2GB to the game, or -Xmx2560M to give 2560MB. Después, haz clic en Settings, cerca de la parte derecha de la pantalla. (TM) 64-Bit Server VM warning: JVM cannot use large page memory because it does not have enough privilege to lock pages in memory. dgc. The only thing that has changed on. Posted April 6, 2018. Start the game first and note down your current FPS when you hit F3. For (3 GB) RAM: -Xmx1G -Xms1G -Xmn128m -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+UseNUMA -XX:+CMSParallelRemarkEnabled -XX:MaxTenuringThreshold=15 -XX:MaxGCPauseMillis=30 -XX:GCPauseIntervalMillis=150 -XX:+UseA. The maximum amount of ram you should allocate is 8 gb, but if you aren't playing on a huge modpack, then 6 gb should be enough. Set the JVM arguments to the. Video demo of. so whats the problem? This thread is archived. 6. Minecraft is intensive to RAM and CPU, if you don’t have enough RAM, the Minecraft lagging is reasonable. The – Xmx2G – command signifies that you’ve allocated 2 GB RAM to Minecraft. This is due to the growth of MC having hit an important threshold, that the crappy graph is trying to illustrate: the default sizing of Minecraft memory (1GB) is now too small to accommodate a normal size modded MC instance. For example: if you want to allocate 2GB to your Minecraft, simply rewrite the code into –Xmx2G. exe file. Bước 5:. I need to optimize my Minecraft for me to get more FPS, so I need good JVM arguments, I have a 32 bit OS and can you put 2GB of ram on the JVM arguments, so can someone just give me a good one? Thanks. We limit the memory based on your computer limitations. ” Hi im new to modded minecraft and im using curseforge launcher playing on 1. This argument is used to specify the average RAM usage by Minecraft on your system. Once it's installed it'll be in program Files and not program Files x86. None of which is needed for a 7 player server. Enable the “JVM Arguments” button in the list and replace “-Xmx1G” with “Xmx(the amount of Ram that you want to allocate in Gigabytes)G” Replacing this part of the Argument with the “-Xmx4G” command or the one according to the available RAM. Share. if you really want to utilize 16GBs of ram the argument should look more like this: (copy and paste this into your JVM arguments) -Xmx16G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 . Say you have allocated 1 GB of memory to your container, then if you configure -XX:MaxRAMFraction=2, then approximately ~512GB (i. ”. This will create a new text document in the same location as the minecraft_server. -Xms1G will set the MINIMUM HEAP to 1GB at start-up. Go Down to JVM Arguments 4. In my example I set the minimum to 1gb but in MB form, and obviously I set the max to 4gb. Go to Minecraft r/Minecraft. I recommend leaving the others alone) -client. As you can see here, the memory usage between JVM's is a pretty impactful 1GB. Click the three dots icon next to the desired installation profile. Locate the line of code that starts with “ java -Xmx ” and is followed by a number and “ M ” for megabytes or “ G ” for gigabytes. ”. For servers using 12GB of RAM or less: java-Xms12G-Xmx12G-XX:+ UseG1GC-XX:+. -XX:PermSize: -XX:MaxPermSize: are used to set size for Permanent Generation. Note: A good number to allocate would be half of the available memory. Step 4: Click More Options. I have the Minecraft Launcher and Prism Launcher installed, so I can provide instructions for both: In the stock Minecraft launcher, select the Installations tab, click on the installation, click on "More Options". SSP will never receive the type of performance increase that SMP does and the biggest hits come from mojang not building minecraft as a multicore game (or using java in the first place. Click on the three dots next to your version & select „Edit”. Souls - After you die, a hostile Soul that stores your inventory will spawn. What really hits java, esp with MC is the backend. Sorted by: 51. Scroll down to find JVM Arguments. This will, in turn, help reduce lag. Click the three dots next to your Java settings and choose “Edit. JVM arguments I use:-Xmx8G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M. fps counter cant even register it its always 150 ish. 2 gb is a very low amount of RAM I dont think windows can even run on 2 gigs of RAM. JVM Arguments will allow the game to run longer, without these Lag spikes, and FPS drops. The good news is that it’s relatively easy to allocate more RAM to Minecraft. Method One: Allocate RAM From The Default Launcher. It seems easy but a step-by-step guide is necessary like you did here, thanks a lot for the detailed guidance. What -XX:+UseConcMarkSweepGC. This would need a PC with at least 8 GB RAM (as the real memory usage is almost double the memory visible in Java). This can be fixed by adding more RAM through JVM Arguments in the Minecraft Launcher. To increase the amount of RAM used by Minecraft, you will need to change the JVM arguments. g. Look for the JVM arguments switch. How to allocate more ram to minecraft Minecraft ram allocate updated 2021 last [最も人気のある！] minecraft memory allocation 156642-minecraft memory allocation. -Xmx6g -Xms6g -XX:+UseG1GC -Dsun. And it crashes if I play for several hours. ”. 1. This approaches fails at the creation of the JVM. My Specs are : CPU : Intel Core i5-8250U. Why not give it more memory? Let's give Minecraft 4 GB of RAM to play with. Make sure that the switch labeled "Advanced settings" is turned on! Find and click the Forge profile that you are using to play Pixelmon. files for sevtech. Bạn nên cung cấp ít nhất 4GB RAM cho Minecraft. In the vanilla Minecraft launcher, select the "Launch options" tab. JVM arguments can improve your frame rate and RAM usage tremendously. when you tell it u want -Xmx5G that is telling the computer at max. TargetDirectory="C:UsersOEMDocumentsCurseMinecraftInstancesFTB. ago. It just forces the GC to run harder and lag the main java thread. I created a simple mod that allows you to send mail to other players on your server. Method 5: Limit the RAM usage of Minecraft. If you have 4GB or more of RAM, type -Xmx4G into the text box and click “ Okay “. server. 9. #3 JVM Arguments & Lag Spikes Minecraft can start getting slow, and getting constant lag spikes after being played for a long period of time. UsersuserDesktopOmegacraft1. I dont know any arguments but for the last part I can help, first go to the MC launcher and click on ''Installations''. gcInterval=2147483646 -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 . It can be entered accordingly to the content of spatial memory. -Xmn. I have been dedicating 8-9 gigs to the pack but get sudden freezes for around 10 seconds ever 20 minutes or so. Minecraft JVM arguments: -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M. Unless you run into a memory related problem I would suggest you. If you are playing without mods, at JVM-Arguments the usage should be set to -Xmx2G. By default your Minecraft launcher will have only 2GB's of RAM allocated on startup. to assign 4 GB of RAM to the game „-Xmx4G”; for 3. The /r/feedthebeast subreddit is not affiliated or. Bạn sẽ nhìn thấy một dòng chữ trong trường văn bản "JVM arguments", phần đầu có ghi là -Xmx1G; hãy thay đổi số "1" thành số gigabyte RAM mà bạn muốn cấp cho Minecraft. This can be set in Minecraft Launcher - Edit Profile - JVM Arguments-Xmx1024M or -Xmx1G is usually enough. I still only get around 130-150 fps at 20 chunks render distance while moving around although I expected more, but it's more than what my monitor can display so I'm happy. If you've assigned PermGen this is added on-top of the RAM you assign to Minecraft. Toggle on the JVM arguments switch. 3GB – Use this plan if you are planning to install medium-sized modpacks or plugin packs. 5. Fifth all of your arguments lag like hell. If the VM decides to use all the memory, then it will increase the time between the garbage collections (20 sec instead of 4), but it will also increase the garbage collection time by. Minecraft installation settings. ; In the JVM arguments, select the text highlighted in yellow in the image above. Once there, click the “Edit” option on the right side. This is the text that allocates RAM to your Minecraft client. Now you have to download the latest optifine version. Follow the steps below to allocate more RAM: Open the Minecraft Launcher. I personally recommend allocating 5 GB with a 8 GB RAM, but try and see what works for you. For the server, I have an i7-2600 @ 3. com Underneath the heading JVM Arguments you'll see a bar with a string of text in it. doing that on a loop. Faça o download e executar o novo launcher. It is the largest bottleneck, and it is very hairy to tune. Minecraft is going to make memory decisions based on -Xmx, not -Xms. server. 5 seconds and it happens like every 5 seconds. Right click Windows Start menu and choose Settings. Posts: 19,253. Corsair Vengeance 16GB DDR5 4800MHz Laptop Memory (CMSX16GX5M1A4800C40) (182 Reviews) $69. Top Bottom. I'd recommend a max of 4gb and a starting value of 256mb. STEP 5: Select the More Options tab in the right area of the screen. MultiMC Modpack Install. You can find yours in the Performance tab of Task. Remove '-Xmx1G' or the default setting and replace it with the desired amount of ram you want by using the key below (Note: Putting too much RAM may have bad effects discussed above). Check the JVM Arguments option checkbox. という方は、まずは "F3キー" を押してメモリ使用率を確認してみましょう。. How to allocate more ram to minecraft. Na seção "Profile Selection", clique em "Edit Profile". 4gb is a safe amount that shouldn't cause any problems. Sixth The CMS Collector was replaced with G1GC in Java 9 and -XX:+UnlockExperimentalVMOptions doesn't unlock it. Cách tăng thêm RAM cho máy tính chơi Minecraft, Minecraft là tựa game đã quá nổi tiếng và có lẽ không cần nói nhiều về nó. Marks your Java Virtual Machine (JVM) as a client application. Go to Installations and select the latest version of the game. The subreddit for all things related to Modded Minecraft for Minecraft Java Edition --- This subreddit was originally created for discussion around the FTB launcher and its modpacks but has since grown to encompass all aspects of modding the Java edition of Minecraft. Don't set it too high. e. 15 will not do well with such low memory…) java -Xms10G -Xmx10G -XX:+UseG1GC -XX:+ParallelRefProcEnabled . 2GB of RAM - despite not using it entirely(F3 never actually reaches more. Enable it by clicking just to the left of it. Next, select “More Options” from the lower-right corner. 6. There should be 3 dots in the right side of the selected version. So if you happen to have some other application running the background that you aren’t aware of, it’ll take away from that 2GB that your PC needs which would kill it. dgc. For example, “2G” is equal to 2 Gigabytes of RAM, while “4G. Click on "More Options" below and under JVM arguments you will find -XmX2G far ahead. You will see the “-Xmx2G” argument. Sorted by: 0. In an OS environment where we’ve installed both 32 and 64-bit packages, the JVM automatically chooses the 32-bit environmental packages. Adjust the slider under Allocated Memory to suit. Are these arguments valid for the minecraft server. increase ram usage, either in argument or through the launcher (recommend launcher) EDIT: people are saying more ram but keep it below 8-10. Whenever it hits 100%, my game freezes for 1-3 seconds. exe” file and select “Properties. Change “2G” to the amount of RAM you would like to allocate for Minecraft. My JVM Arguments are -Xmx2048m -Xms256m -XX:PermSize=256m -Dminecraft. Locate to the About section and note down the number of Installed RAM under Device specifications. 18. Do I have to use java 15 or can I keep java 8 and will these arguments help me thank you (also how do I use java 15 instead of java 8) 4. It was running on an x86 architecture, which won't allow more than one gig. As chickenmac says, make the game only use 2-4gb of RAM for starters. For example, if. The most it will use out of 48GB is 7-8GB, and then I get a framerate pause for 1-2 seconds, and it drops back to 1-2GB and climbs, repeats. TieredCompilation allows the JVM to use compiled instead of interpreted methods for the profiling stage and early runtime. Edit it to the. space. These are the steps to be followed on Adding More Ram To Minecraft Server. Jun 13, 2016 at 6:49. Scroll down to find JVM Arguments. If your executable is pointing to 32 bit java, then it will not allow nore that 1G of ram. The “JVM Arguments” field will have code in it such as “-Xmx2G. Change the number 2 to a larger number and click Save. However, for those with additional RAM, allocating that extra memory can give significant performance boosts. Now at JVM ARGUMENTS, the person should opt for ‘Xmx2G-XX:+Unlock Experimental VMOptions’. This is useful if your program will consume a large amount of heap memory right from the start. I've already tried both 32 and 64 bit versions of Java, u45, u51, u161 and so on. The limit is with the 32-bit JVM's which cannot go over 2-4 Gb depending on operating system. In today’s market there are lots of high tech games available which require more RAM due to high graphics. I can't see where I need to add more ram to the argument. EDIT 2: just saw ur specs. CLIENT ONLY MOD . To allocate more memory to Minecraft, do the following: Open the Minecraft launcher. exe -o true. Uninstall that version of java fully, then download a x64 bit browser (I used Firefox) and then download java through that browser. Simply go ahead and edit a profile and where it says "Java Settings (Advanced)", tick all the check boxes.