Allow Minecraft to Use More CPU

Question

A lot of people seem to be having problems with Minecraft using too much CPU power. I wish for my Minecraft to use more CPU that it does now.
Some Info: I have a dv7 laptop with an i5 quad core 2.4 gHz chip, 6 GB of RAM, and a Radeon HD 6770 graphics card. Basically, this computer is quite the beast. It can play Eve and other high-tech games. But it plays Minecraft slower than my brother's computer, which is dual core and equipped with a low-end graphics card. I asked him to open his task manager and found he was using 60%, if not more, of his CPU to play Minecraft, exceeding his performance.
Question: How do I enable my CPU to use all its cores and CPU power on Minecraft?

Zero · Accepted Answer

(Unmodded) Minecraft isn't multithreaded, so splitting it across multiple CPUs is not possible.  However, I am not sure about a mod to allow for this possibility.  There might be other factors you are ruling out.
From what I have found the mod, OptiFine, is supposed to split the load across two cores. (Otherwise, Minecraft only uses one)

OptiFine 1.2.4 Mod adds a lot of options for better looks and
performance. Doubling the FPS is common. Moves fog away, adds mipmaps,
chunk loading control (mod CAF), Smooth FPS, brightness control, VSync
and many other.

Screenshot of Optifine below:

Phatency · Answer

Have you checked options/video settings? There is an option for "Power saver / Balanced  / Vsync / Max FPS" modes. Setting that to Max FPS might solve your problem.

There is really no way to make Minecraft use your multiple cores more efficiently, because Minecraft doesn't handle multi-threading as well as some other games might. It might even run faster on an older, dual-core CPU such as your brother's.

Also, if installing mods isn't an issue, you could try out OptiFine, which generally helps with low FPS issues (and it also has a ton of other useful features).

ShawnFeatherly · Answer

The fix for my performance issues was using the 64 bit version of the Java runtime. After that was installed Minecraft ran much better.

64-bit Java can be downloaded here: http://www.java.com/en/download/manual.jsp

To my understanding, the 64-bit Java runtime only gives Minecraft access to more RAM. Yet this fixed the performance issue.

user34105 · Answer

I installed ThrottleStop and gave Minecraft a higher FID (in my case, 10 instead of 6).

Now Minecraft uses the full 2.5GHz of my processor instead of capping at 800MHz or so. It runs smooth as butter.

A word of warning, however: if you're using a laptops, you do want to keep an eye on the heat situation before the computer shuts off on you.

valkyrie_pilot · Answer

The Sodium mod, as of Minecraft 1.15.1, makes the graphics engine of Minecraft multithreaded, greatly increasing performance. JellySquid_, the creator of those mods, also has made some optimization mods for the server side, Lithium and Phosphor, which also allow singleplayer worlds to run faster.

Answered by valkyrie_pilot on September 3, 2021

Allow Minecraft to Use More CPU

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