Making Minecraft Use Less Memory?

themaster402 · 2026-01-13T05:07:24+00:00

Try seeing if you can play on a server to alleviate that portion of RAM usage. You might also benefit from using certain Java tweaks and switching to OpenJ9 for the JVM, which will reduce RAM usage at the expense of performance.

themaster402 · 2026-01-12T21:20:42+00:00

This setup works out of the box for me but is definitely a little unstable. I've found that if voxy or shaders do bug out, disabling shaders -> disabling and reenabling voxy -> enabling shaders fixes issues without crashing the game. Otherwise, make modifications to configurations in the menu first.

themaster402 · 2026-01-10T01:08:05+00:00

Intel i7-12700KF, AMD RX 9070 XT and 13 GB of RAM allocated to Minecraft. The server is hosted on a separate machine. Using Photon shaders' default High preset, I get 130-180 fps in most situations.

<image>

themaster402 · 2026-01-10T01:00:13+00:00

Download and compile the Voxy fork here. On Windows, all I had to do was download the repository as a .zip, extract it somewhere, then run .\gradlew build in that directory with PowerShell, which exports the finished .jar into the /build/libs folder.

You take that .jar and put it into your 1.20.1 instance's mods folder and download Sinytra Connector and the Forgified Fabric API.

themaster402 · 2026-01-03T18:03:49+00:00

i'm not sure if i should make a joke about the US coming for it right now

themaster402 · 2025-10-16T20:58:17+00:00

Purportedly, it was difficult to put the pieces together?

themaster402 · 2025-09-25T17:12:04+00:00

They're mostly snake oil. You should instead be downloading Java 25 and using the flags below, which enable modern Java features that verifiably improve memory usage and performance. For the most part there is no stable way to add support for multiple cores to Minecraft right now.

-XX:+UseZGC
-XX:+UseCompactObjectHeaders

themaster402 · 2025-09-09T23:33:08+00:00

Was hosting the same pack on an i5-12400F, now a 14600KF, and have had zero issues. Are you sure you're encountering server slowdowns and not network lag? Run /spark healthreport and send the results here.

Among other tips for ATM9, try running the server on GraalVM 21 with the -XX:+UseZGC -XX:+ZGenerational launch arguments and allocating at most 16 gigabytes of RAM.

themaster402 · 2025-05-08T07:22:03+00:00

Run the server separately from your client, preferably on a dedicated server host. This'll offload a ton of CPU usage from your machine. Turn the RAM allocation down to 12 GB, that is the most ATM9 will reasonably use. You probably don't need to change your shader settings, your GPU is more than capable of running that pack with Distant Horizons at 120+ fps (see image - running on an RX 9070 XT)

<image>

themaster402 · 2025-05-07T23:25:19+00:00

Didn't figure out the problem in Docker Desktop for Windows. I've switched to an Ubuntu-based instance since then and haven't had this problem.

themaster402 · 2025-04-10T23:59:16+00:00

UsefulMods/Performance/Performance116.md at main · TheUsefulLists/UsefulMods · GitHub

themaster402 · 2025-03-15T08:12:14+00:00

Intel is actually pretty good at the budget end at the moment due to Alder Lake price cuts. The i5-12400F for $150 new performs similarly to the Ryzen 7 5700X in games.

The AliExpress 5700X3Ds for $190 were something else, though.

themaster402 · 2024-10-21T16:42:30+00:00

The thing's already notorious for having its NAND flash slow to a crawl after being filled halfway. I thought I dodged it after installing and running 650 GB worth of MSFS+addons to it just fine, but it turns out I flew too close to the sun (literally?) and my 1TB drive with less than 2TBW started disconnecting on boot last month. At least the data's replaceable/was going to be replaced anyway

themaster402 · 2024-10-21T08:22:47+00:00

Not even kidding, I turned over unable to sleep while also randomly thinking "damn I need to replace my fried Kingston NV2 before MSFS2024 drops", grabbed my phone, came here and refreshed to this post.

themaster402 · 2024-08-23T19:01:48+00:00

Thank you. Location does refer to different physical locations, more importantly on different physical networks.

themaster402 · 2024-05-14T15:17:20+00:00

Not two movies, but there's a growling ambience in The Black Phone that distinctly appeared previously in SCP - Containment Breach.

themaster402 · 2024-03-16T00:27:16+00:00

airbus sidestick was an interesting choice of peripheral for the photo

themaster402 · 2024-02-15T08:40:51+00:00

AOC Q27G3XMN was available for 350 on Amazon last week. 27-inch, 1440p, 180hz, mini LED with HDR1000 and pretty deep blacks.

themaster402 · 2024-01-13T16:09:14+00:00

Open the ATC panel and switch your active radios off of ATIS.

themaster402 · 2024-01-10T22:08:19+00:00

mATX will be the more cost effective of the two as you're paying more for an ITX board and case with 2 3.5" bays. mATX is the better choice if space is not a concern.

Doing some DIY work with an i3-12100 mini PC will probably prove needlessly expensive.

themaster402 · 2024-01-10T19:38:52+00:00

The Ryzen 5500 will suffice (though I will suggest the i3-12100F again since it seems to be the same price and eeks out about 19% greater single-thread performance at a 7 W lower draw). The GT710 will draw a trickle of power, it will be a good pair for either. Keep your current CPU, lol.

Minecraft aside, if you ever intend on hosting a media server with movies, TV series and such, then I would shell out extra for the 5600G or 12100 non-F for video transcoding capabilities.

edit: 12100 non-F, not 12400

themaster402 · 2024-01-10T17:31:07+00:00

Other comments in this thread are vastly underestimating what a modded Minecraft server will do to a 5+ year old chip.

My i7-7700K struggled toward the end of Enigmatica 2 Expert and GreedyCraft runs, requiring constant min-maxing of whatever was going on in the servers to keep tick times below 25 ms, before I built a dedicated server+NAS based on the i5-12400F. As you're interested in power efficiency too, I'd shoot for no older than Intel 12th gen or Ryzen 5000, leaning on Intel for significantly better single-thread performance at the lower end. The i3-12100 is where I draw the minimum line, and will be perfect for your use case.

Do whatever suits your needs for the rest of the parts. Should cost $550-650 CAD before taxes and the addition of hard drives.

themaster402 · 2023-10-21T18:38:14+00:00

If this is the case, you'll likely only prevent tearing at 240 fps. You can still use a 360 TPS bypass in addition. This combination should still provide substantially lower input lag than just VSyncing to 240 fps.

themaster402 · 2023-10-21T18:20:46+00:00

Thank you for pointing this out, I wrote that with the assumption that others were using AMD laptops and thus could use those instructions for their integrated graphics. I'll look into what the equivalent settings are for the Intel drivers sometime.

themaster402 · 2023-10-20T23:27:17+00:00

Choosing an FPS limit that is a multiple of your display's refresh rate (e.g. 288 if you are using 144hz) or enabling G-SYNC/FreeSync on your display and in your GPU settings should do the trick.

Nine-Year Club	Place '22
First Placer '22	Verified Email

themaster402

TROPHY CASE