Helio G25 vs Helio G91: Which Chipset Is Faster?

The MediaTek Helio G91 is significantly faster than the Helio G25. In real-world use, the G91 delivers roughly double the CPU and GPU performance, making it the clear choice for gaming and demanding apps, while the G25 remains a budget-oriented chip for basic tasks.

Background: Two Chips, Different Eras

The Helio G25 launched in 2020 as an entry-level 4G chipset, powering phones like the Redmi 9A and similar ultra-budget devices. It uses an older 12nm process and eight Cortex-A53 CPU cores, a design that was already dated at release. The Helio G91, introduced in early 2024, is a re-branded and slightly updated version of the Helio G85 (from 2020). It uses a 12nm process as well, but pairs two faster Cortex-A75 cores with six Cortex-A55 cores, plus a more capable Mali-G52 MC2 GPU clocked higher than the G25’s GPU.

How the Chipsets Differ Architecturally

The core architecture explains most of the performance gap. The G25 has eight Cortex-A53 cores, all clocked at up to 2.0 GHz. These are power-efficient but have low per-core performance. The G91 has a big.LITTLE setup: two Cortex-A75 cores at up to 2.0 GHz for heavy tasks, and six Cortex-A55 cores at up to 1.8 GHz for lighter work. The A75 cores are significantly faster per clock than A53 cores, especially for single-threaded tasks like app loading and web browsing.

On the GPU side, the G25 includes a Mali-G52 MC2 at 650 MHz, while the G91 has the same GPU but clocked at 1 GHz. That higher clock directly translates to better frame rates in games and smoother UI rendering. The G91 also supports faster LPDDR4x memory (up to 1800 MHz) versus the G25’s LPDDR4x at 1600 MHz, and it supports eMMC 5.1 storage, same as the G25, but with better memory bandwidth for the CPU to access data.

Benchmark Comparisons: Numbers That Matter

In synthetic benchmarks, the difference is stark. On AnTuTu (v9/v10), the Helio G25 typically scores around 100,000–110,000 points. The Helio G91 scores roughly 220,000–260,000 points. That’s more than double. In Geekbench 5, the G25 gets about 170 single-core and 900 multi-core. The G91 gets around 350 single-core and 1,300 multi-core. The single-core jump is particularly noticeable because the A75 cores are much more efficient at executing instructions.

For GPU benchmarks like GFXBench, the G91’s higher-clocked Mali-G52 renders frames about 2.5 times faster than the G25’s GPU. In practical terms, the G25 can handle light games like Subway Surfers at medium settings, but it struggles with PUBG Mobile even at low settings. The G91 can run PUBG Mobile at smooth settings with balanced frame rates, and it can handle Call of Duty Mobile at low-to-medium graphics.

Real-World Performance: Daily Use and Gaming

In everyday tasks, the difference is obvious. The G25 feels sluggish when opening apps, scrolling through heavy web pages, or multitasking. It’s fine for calls, WhatsApp, and simple browsing, but you’ll notice stutter and longer load times. The G91 offers a much smoother experience: apps open faster, the UI is more responsive, and you can switch between apps without reloading them as often.

For gaming, the G91 is the clear winner. It can handle most popular titles at playable frame rates, while the G25 is limited to very light games. The G91’s GPU also supports HyperEngine, MediaTek’s gaming technology that optimizes network and resource management, though the G25 lacks this feature. That means the G91 will manage thermal throttling better during extended gaming sessions.

How to Choose Between Them

If you’re buying a phone today, the choice is straightforward:

• Choose the Helio G91 if you play games, use social media heavily, or want a phone that feels fast for 2–3 years.
• Choose the Helio G25 only if your budget is extremely tight and you only need a phone for calls, basic messaging, and very light apps.
• Check the RAM and storage too – a G91 phone with 4GB RAM will outperform a G25 phone with 6GB RAM in most tasks.

Also consider the display: the G91 supports 90Hz refresh rates (the G25 is limited to 60Hz), so if you want a smoother screen, the G91 is necessary.

Common Problems and Misconceptions

A common misconception is that the G91 is a new chip. It’s actually a rebrand of the G85, which itself was a slight upgrade over the G80. That doesn’t make it bad – it’s still much faster than the G25 – but it means you’re not getting cutting-edge technology.

Another issue is thermal throttling. Both chips are 12nm, which is less efficient than newer 8nm or 6nm chips. The G91, because it performs more work, can heat up more under load. Some phones with G91 may throttle after 20–30 minutes of gaming, reducing frame rates. The G25 also throttles, but since it’s slower, the impact is less noticeable.

Battery life is another point: the G25’s weaker cores consume less power, so phones with it often have excellent battery endurance. The G91 uses more power, but it also finishes tasks faster, so the overall battery life is comparable in light use. In gaming, the G91 will drain the battery faster.

Cost and Value Considerations

Phones with the G25 are typically priced at the very bottom of the market, often under $100 (or equivalent). Phones with the G91 are usually in the $100–$150 range. The price difference is small, but the performance difference is huge. If you can stretch your budget, the G91 offers far better value for money. You’ll also get better cameras (the G91 supports 108MP sensors vs 21MP on the G25), which matters if you take photos.

However, if you’re buying a phone for a child or as a secondary device, the G25 might suffice. Just be aware that it will feel outdated quickly, and you may want to upgrade sooner.

Frequently Asked Questions

Is the Helio G91 good for gaming?

Yes, for budget gaming. It can run PUBG Mobile at smooth settings, Call of Duty Mobile at low to medium, and most casual games without issues. It’s not for high-refresh-rate or heavy titles like Genshin Impact, which will run poorly.

Is the Helio G25 good for daily use?

It’s acceptable for basic tasks: calls, WhatsApp, YouTube, and light web browsing. But you’ll experience lag when multitasking or using heavy apps like Facebook or Instagram. It’s best for very light users.

Which chipset has better battery life?

The G25 typically gives better battery life in light use because it’s less powerful. But the G91 is not a battery hog; it just uses more power under load. In mixed use, the difference is small.

Can the Helio G25 support 90Hz displays?

No, the G25 only supports 60Hz. The G91 supports up to 90Hz, which makes scrolling and animations look smoother.

Is the Helio G91 a rebranded G85?

Yes, the G91 is essentially a slightly updated Helio G85 with the same CPU and GPU, just minor clock changes. It’s still a 2020 design, but it’s much faster than the G25 from the same era.

Should I avoid phones with the Helio G25 in 2024?

If you can, yes. The G25 is very weak by modern standards, and even budget apps are getting heavier. The G91 is a much safer bet for a phone that will remain usable for a couple of years.

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