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Arm Desktop: x86 Emulation

https://marcin.juszkiewicz.com.pl/2025/07/22/arm-desktop-emulation/
39•PaulHoule•3h ago

Comments

ezcrypt•1h ago
Tried box64 on a Raspberry Pi 5 the other day and it worked above expectations. Except for a minor glitch with OGG audio, I got about 60 FPS in Xonotic (x86_64 emulated on AArch64).
geerlingguy•1h ago
For games in particular, the best performance comes if you use a dedicated GPU [1]. Though the CPU emulation can still be a limiting factor.

I'm able to play most 5-10 year old games that aren't tied to DRMs at 30-60 fps on a Pi [2] (and certainly on Ampere) using box64 and an AMD GPU (or Nvidia on an Ampere system), haven't spent much time with FEX-emu though.

[1] https://www.jeffgeerling.com/blog/2025/system76-built-fastes...

[2] https://www.jeffgeerling.com/blog/2024/use-external-gpu-on-r...

ignoramous•1h ago
Tangential: Google engs recently presented RISC-V -> x64 binary translation in Android viz. Berberis: https://youtube.com/watch?v=HjhzXZqjFrU

Also: https://github.com/MattPD/cpplinks/blob/master/assembly.risc...

CoastalCoder•56m ago
I'm curious how long until most users just don't care if their CPU has native x86 support.

As someone developing HPC applications, I generally don't care either, as long as the hardware has good fundamentals, and is well supported by the available compilers and profiling tools.

Honestly at this point the only reason that I'm aware of to prefer Intel for my workloads is the awesomeness of VTune.

How's the quality of the equivalent AMD or Arm tooling these days?

testing22321•54m ago
I have an M1 MacBook Air I bought used a year ago for $800.

I edit a ton of 4K video, photos off my Sony Mirrorless, write articles, web, etc.

It is by far the fastest computer I’ve ever used. I have never once known or cared if anything is running x86.

saghm•40m ago
The first time I got one of the ARM MacBooks from a job after years of being given the x86 ones, even my cats could immediately tell the difference. The x86 ones were basically constantly operating at a warm temperature that caused them to both want to nap on it, so they'd scuffle a few times a week when inevitably one of them tried to get on my desk only to find the other already napping there. In around 20 months of using M1 and newer laptops from employers, I've had a cat nap on them maybe three times total, because it pretty rarely is noticeably warmer than anything else in the room, so they have no special interest in it compared to much more enticing furniture like my keyboard.
varispeed•48m ago
Sadly some companies are stubborn and just won't support ARM. For instance if you need to use Autodesk Revit for work, you are sentenced to Windows x86 hell.
chainingsolid•19m ago
Personally for me I only care about x86 for 2 reasons.

1) Steam library.

2) And the just works combo of ATX & the ability to use any ISO on almost any x86 machine.

I'm personally scared if x86 dies the open market of ATX and bring your own OS won't exist as every company will just lock you in to only there stuff on their devices.

dagmx•18m ago
The majority of compute users do not care.

Everyone who uses a tablet or smartphone obviously doesn’t care.

Anyone on a Mac doesn’t care, and even on windows, only very performance sensitive people would care if Prism isn’t doing its thing.

You’d essentially be left with AAA PC gamers and other performance sensitive people, which are a small percentage of overall users.

jtbayly•3m ago
They don’t care until they can’t print... I had a user buy an ARM Windows device last year. I thought it was a sweet little computer, but the large multi-function Sharp printers don’t have drivers, so the best I could do was get basic printing working. Not double sided, not finishing options, etc. Pretty much a bummer that I expect to go away in the next few years, but still currently a place that can matter and cause people to lean x86.

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Arm Desktop: x86 Emulation

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