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Released on July 21, 2011. Core i5 or Core i7 Processor. Thunderbolt. This unit is also used to run the Mac mini Server configuration.

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Is the older macOS's a GPU killer?

I have a mid 2011 Mac Mini 2.5GHz i5 with AMD Radeon HD 6630M 256 MB

I was told that newer versions of macOS do not throttle down video resolutions or other demands on the graphics GPU automatically, and that this is causing excessive and undo wear resulting in failure of the GPU. Has anyone else heard this?

Is there a way to limit GPU demands manual, but within the OS not say site by site?

Finally, is it really worth replacing the logic board if the gpu can handle the demands or is there a board with upgrade to modern standards available?

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Review the Mojave support page for what systems are compatible How to upgrade to macOS Mojave

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I’m a bit confused on your questions:

The dedicated GPU in any mini is not throttled.

But! The CPU can be when the system overheats because the fan, heatsink or the sensors have failed. This is often a symptom the system has dust build up within the fan and logic board, I would recommend installing a good thermal monitoring app like TG Pro. Post a snapshot of the main window so we can see what you are encountering here Aggiungere immagini ad una domanda.

You can alter the display settings choosing a lower resolution if you want to lower the GPU’s processing load. You can also alter Safari site by site as well altering the page to reader mode.

The 2012 model as well as the 2014 models use a different logic board design and the logic board is not the same. Even that won’t alter the limits of the systems cooling. In fact from what was seen in the new 2018 Mac Mini presentation it looks like Apple made a big effort finally addressing the systems limited cooling.

So the bottom line here is Your system likely needs a good cleaning and needs the thermal paste refreshed at a minimum. You may need to replace the heat sink and you likely need to look at lowering the systems heat buildup like swapping out the HDD for a SSD as well as look at upgrading the RAM (16 GB max).

Do remember MacBook laptops (all) and the mini are not gaming rigs! If you want that, you’ll need a system with much better cooling.

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JB Brighton sarà eternamente grato.
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