Part of POCO guides, HyperOS guides, 2026 guides.

Every ROM looks fast in the first minute. Any build you flash onto a cold, freshly booted POCO X7 Pro will feel quick, because nothing has warmed up yet. So the question here was not "is Axion OS 2.4 fast", it was "does it stay fast when the phone is hot and the session is long".

That is a harder thing to test and a much more useful thing to know if you play games on your phone.

What I tested

• Antutu. A full run, not a partial one, so the score means something.
• Geekbench 6. Single-core and multi-core, for a sense of how the chip behaves under short bursts.
• PUBG Mobile. Real matches, watching frame stability instead of one good moment.
• Free Fire. Settings pushed a little higher than I normally play.
• COD Mobile. The heaviest load and the longest session of the set.
• Asphalt. Graphics-heavy, which makes thermal throttling show up early.
• Heating. How the phone handled the load across the whole run.
• Battery. Gaming drain compared with ordinary use.

Why one score tells you nothing

Benchmarks measure a short burst. Games run for half an hour. Those are not the same thing, and the gap between them is exactly where a build stops feeling good.

When a phone gets hot, the firmware pulls the performance back to protect it. That drop is the part you feel as stutter in a match. A build can score well and still fall apart in minute fifteen, and a build with a slightly lower score can hold its frames longer and feel better to actually play on.

So do not pick a ROM off a single number. Pick it off the tenth minute.

How I ran it

I did the benchmarks and the games in one sitting and let the phone get properly warm in between. That is deliberate. A cold device tells you about the chip. A hot device tells you about the ROM's thermal behaviour, which is the part you live with.

I also kept the conditions the same between games so the comparison means something, and I watched for the moment the frames start sliding rather than the first clean minute.

What actually decides this

Three things show up over and over when a custom ROM claims a gaming advantage:

• Frame stability. Not the peak number, the floor. Does it stay smooth when the phone is warm?
• Thermals. How quickly does the phone reach the point where it has to slow down, and how hard does it slow down?
• Battery drain. A build that runs cooler but drinks power is not a win for a long session.

A custom ROM can genuinely change how a device manages heat and CPU behaviour. It can also do nothing at all under load, no matter how the score looks on paper.

Is Axion OS 2.4 better than HyperOS for gaming?

Honestly: judge it by your own sessions, not by a forum post. If you play in short bursts, the smoothness is what you will notice first. If you play long grinds, thermals decide your evening, and that is exactly the thing a single benchmark run cannot show you.

The useful habit is to install it, play the games you actually play for as long as you actually play them, and watch for the moment the experience changes. That is the only test that matches your use.

For the flashing side, the free Rom Flasher tool handles the ADB and fastboot drivers, which is the step most people stall on before they ever get to test a ROM.

Full description from the video

Axion OS 2.4 on the POCO X7 Pro — Antutu, Geekbench 6 and four real games: PUBG Mobile, Free Fire, COD Mobile and Asphalt.

Benchmarks are easy to post. Sustained gaming is the hard part, so I ran both in one session and let the phone get properly warm. Antutu and Geekbench 6 give the raw numbers, then PUBG, Call of Duty, Free Fire and Asphalt show what actually happens to the frames once heat builds and the firmware starts pulling performance back.

The question I keep coming back to is simple: is Axion OS 2.4 actually better than HyperOS for gaming, or is that just a nice line in a forum post? Heating, frame drops and battery drain are where that answer hides, so that's exactly what the video goes after.

📱 Device : POCO X7 Pro

🧩 ROM : Axion OS 2.4

🔬 What Was Tested

• Antutu — a full run, not a partial one
• Geekbench 6 — single-core and multi-core
• PUBG Mobile — real matches, watching frame stability rather than one good minute
• Free Fire — settings pushed a little higher than I usually play
• Call of Duty Mobile — the heaviest load and the longest session of the set
• Asphalt — graphics-heavy, good for spotting thermal throttling early
• Heating across the whole run and how the phone handled it
• Battery drain during gaming compared with normal use

📊 Verdict

A custom ROM on this device is fast when it's cold, and that's true of almost any build you flash. What separates a good one from hype is the tenth minute, not the first. So my honest advice: don't judge anything off a single score, look at whether the frames fall off a cliff once the phone is hot, and decide for yourself whether the difference is worth the flashing. Short sessions? You'll notice smoothness first. Long grinds? Thermals will decide your evening.

❓ Common Questions

• Do I need an unlocked bootloader? Yes — a custom ROM like this can't be flashed with a locked one.
• Does flashing wipe my data? A clean flash does, so move your files somewhere safe first.
• Will this work on another phone? No. It's built for the POCO X7 Pro.
• Is it a daily driver? Test it with your own apps before you commit to it.

Common questions

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