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The Helio G81 and Helio G91 are closely related 4G smartphone platforms, but their published specifications are not identical. MediaTek lists the same CPU core families and Mali-G52 MC2 graphics for both; the G91 has a higher maximum GPU clock and explicitly supports displays up to 90 Hz. Benchmark aggregates do not establish a consistent winner: the result changes between AnTuTu 10 and AnTuTu 11, and the figures combine results from different phones.
Helio G81 vs Helio G91 specifications
The figures below come from MediaTek’s official Helio G81 specifications and Helio G91 specifications, accessed in 2026. They describe platform capabilities, not guaranteed features of every phone using the chip.
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| Specification | Helio G81 | Helio G91 |
|---|---|---|
| CPU | Eight cores; Cortex-A75 up to 2 GHz and Cortex-A55 listed at 1.7 GHz | Eight cores; Cortex-A75 and Cortex-A55; maximum CPU frequency 2 GHz |
| GPU | Arm Mali-G52 MC2, up to 820 MHz | Arm Mali-G52 MC2, up to 1 GHz |
| Memory | LPDDR4x, up to 8 GB, maximum frequency 1800 MHz | LPDDR4X, up to 8 GB, maximum frequency 1800 MHz |
| Storage | eMMC 5.1 | eMMC 5.1 |
| Display | Maximum resolution 2520 × 1080 | Maximum resolution 2520 × 1080; maximum refresh rate 90 Hz |
| Camera capability | ISP entries: 16 MP + 16 MP or 48 MP | Feature page highlights 108 MP; specification table lists 16 MP + 16 MP or 64 MP |
| Cellular | LTE Cat-4 downlink | LTE Cat-7 downlink / Cat-13 uplink |
| Wireless | Wi-Fi 5; Bluetooth 5.0 | Wi-Fi 5; Bluetooth 5.0 |
What differs in practical terms?
GPU clock and gaming potential
The G91’s listed maximum GPU clock is 1 GHz, compared with 820 MHz for the G81. That makes the G91 the stronger on-paper graphics configuration, but clock speed alone cannot predict game performance or frame-rate stability. A phone’s cooling, memory configuration, software, and sustained power limits also affect results.
Display and camera features
MediaTek explicitly lists 90 Hz display support for the G91. That does not mean every G91 phone has a 90 Hz panel: the handset maker chooses the actual screen and its implementation. The same distinction applies to cameras. The G91 page promotes 108 MP capability, while its specification table lists up to 64 MP in the stated ISP configurations. Treat 108 MP as a platform feature claim, not a promise that a particular G91 phone includes a 108 MP sensor. The G81 page lists 48 MP or dual 16 MP ISP configurations.
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CPU, memory, and connectivity
Both platforms have eight 64-bit CPU cores using Cortex-A75 and Cortex-A55 cores, and both list up to 8 GB of LPDDR4 memory at 1800 MHz and eMMC 5.1 storage. MediaTek presents CPU clock details differently: the G81 page specifies A75 up to 2 GHz and A55 at 1.7 GHz, while the G91 page gives a 2 GHz maximum CPU frequency. The published tables therefore should not be read as proof of identical cluster clocks.
The G91 lists higher LTE category support than the G81. The phone’s supported bands and the carrier’s network still determine whether a particular device can use a given LTE service. Wi-Fi 5 and Bluetooth 5.0 are listed for both.
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Helio G81 vs Helio G91 benchmark comparison
NanoReview’s comparison reports third-party aggregates, not a controlled test of two otherwise identical phones. Its results and the number of reported tests vary by benchmark version and metric.
| Benchmark and version | Helio G91 | Helio G81 | Reported sample context |
|---|---|---|---|
| AnTuTu 11 | 354,158 | 358,608 | 15 G91 tests and 43 G81 tests |
| AnTuTu 10 | 276,628 | 258,706 | Separately indexed comparison page; sample counts not stated there |
| Geekbench 6 single-core | 405 | 432 | Comparison page lists three G91 phone models and twelve G81 phone models |
| Geekbench 6 multi-core | 1,407 | 1,416 | Comparison page lists three G91 phone models and twelve G81 phone models |
| Geekbench 6 multi-core, separately indexed page | 1,389 | 1,391 | Sample counts not stated on that page |
The AnTuTu ordering reverses between the reported versions: G81 is slightly ahead in the AnTuTu 11 aggregate, while G91 leads in the AnTuTu 10 figures. Geekbench 6 results are close, with G81 narrowly ahead in the listed single- and multi-core comparisons. NanoReview’s Helio G91 vs Helio G81 benchmark comparison draws on different sets of phones; the scores should not be treated as a guaranteed result for every device.
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No controlled comparison using the same phone design, software, and thermal conditions is established by these figures. MediaTek’s specification pages do not publish these benchmark scores, and the aggregates do not support an exact real-world performance advantage for either chip.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which chipset should you choose?
Use the chipset as one part of a phone comparison, not as a verdict by itself. If you are choosing between actual devices, check the exact model and regional variant, then compare:
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- Price and availability for that specific market.
- Display refresh rate and panel quality, rather than relying on the chipset’s maximum supported refresh rate.
- The camera sensor and the phone maker’s image-processing implementation.
- RAM and storage capacity, which may differ between configurations.
- LTE band support for your region and carrier.
- Battery capacity, cooling, software experience, and update policy.
For example, NanoReview lists phones such as the Tecno Spark 40, Motorola Moto G05, and Xiaomi Redmi 14C among G81 devices. Its Helio G81 device list is a starting point for checking models, not confirmation of current stock, regional chipset, or a specific marketplace listing.
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