Apple A9
Apple A9: Architecture, Performance, and Relevance in 2025
Overview of the mobile processor that changed the approach to compact devices
Introduction
The Apple A9 processor, released in 2015, marked a significant step in the evolution of mobile chips. Although it has been nearly a decade since its launch, devices based on it can still be found in stores (mostly as budget models or in specific segments). In this article, we will explore how the A9 compares to modern SoCs, who it may benefit, and what compromises to consider when choosing a smartphone based on it.
1. Architecture and Process Technology: A Balance of Power and Efficiency
Dual-core CPU:
The Apple A9 is built on a 64-bit architecture with two cores. This seems modest compared to today’s 8-core processors, but Apple employed an asymmetric configuration: one high-performance core (Twister) and one energy-efficient core. The clock speed reaches 1.85 GHz, which was impressive in 2015.
GPU PowerVR GT7600:
The graphics processor from Imagination Technologies, with 6 clusters, supported the Metal API and handled games of its time smoothly. However, today it struggles with modern graphical standards such as Vulkan or high settings in games like Genshin Impact.
14nm Process Technology:
The A9 was manufactured using two different processes—14nm (Samsung) and 16nm (TSMC). By 2025, 14nm is considered outdated, affecting power consumption and heat dissipation. In comparison, modern chips (such as the Apple A18) utilize 3-nm technology.
Cache Memory:
The 3MB L2 cache improves responsiveness in single-threaded tasks such as launching applications or processing touch input.
2. Performance in Real Tasks
Gaming:
- Retro gaming and casual games: The A9 still handles simple projects like Candy Crush or Among Us on low settings.
- Modern 3D games: Running Call of Duty: Mobile or Fortnite is only possible at minimal graphics settings with frame rates around 20-25 FPS.
Multimedia:
- 4K video playback (with display support) and streaming services (Netflix, YouTube) operate without lag.
- Photo editing in Lightroom Mobile is possible but comes with delays when applying filters.
Artificial Intelligence:
The A9 lacks a dedicated Neural Processing Unit (NPU), so tasks like facial recognition or AR applications (e.g., Pokémon GO) put pressure on the CPU, leading to overheating and rapid battery drain.
Power Consumption and Heat:
With a TDP of 5W, this is a low figure even for 2025, but due to the 14nm process, the chip heats up during active use. In devices with passive cooling (e.g., the iPhone 6s), this can lead to throttling.
3. Built-in Modules: Connectivity and Communication
- Modem: The A9 supports 4G LTE (up to 150 Mbps) but does not support 5G. This is sufficient for basic browsing, but downloading large files will be slow.
- Wi-Fi and Bluetooth:
- Wi-Fi 802.11ac (up to 866 Mbps) — the 2013 standard, lags behind Wi-Fi 6E in speed and stability.
- Bluetooth 4.2 — lacks support for LE Audio or simultaneous connections to multiple devices.
- Satellite Systems: No compatibility with GPS Galileo or GLONASS; only basic GPS support.
4. Comparison with Competitors
Apple A8 vs A9:
- The A9 is 70% faster in single-threaded tests (Geekbench 6 Single Core: 623 vs. 370 for the A8).
- GPU PowerVR GT7600 is 90% more powerful than its predecessor.
Modern Analogues (2025):
- Snapdragon 7 Gen 3: AnTuTu 10 — 650,000, supports 5G, 4nm process.
- Apple A18 Bionic: Geekbench 6 Multi Core — 8500, 6-core CPU, 5nm GPU.
Conclusion: The A9 significantly lags behind modern chips but surpasses budget processors like the MediaTek Helio G25 (AnTuTu 10 — ~100,000).
5. Use Cases
Gaming:
Suitable only for less demanding games. For modern titles, cloud gaming (e.g., Xbox Cloud Gaming) will be necessary.
Everyday Tasks:
- Social media, messengers, email.
- Web browsing (though it’s better not to open too many tabs in the browser).
Photo and Video:
- Shooting in 4K@30fps (iPhone 6s) is possible, but stabilization is weak.
- Night mode and portrait lighting (if available on the device) operate slowly.
6. Pros and Cons of A9
Advantages:
- iOS Optimization: Even older iPhones on the A9 receive security updates (as of 2025).
- Low Device Cost: New smartphones with A9 (e.g., first-generation iPhone SE) cost around $150–200.
- Compact Size: Devices with A9 often have a smaller form factor (4-inch screens).
Disadvantages:
- Outdated Architecture: No support for 5G, Wi-Fi 6, Bluetooth 5.3.
- Limited Multitasking: Most devices have only 2GB of RAM.
- Low Energy Efficiency: Batteries of 1700–1800 mAh last only 3-4 hours of screen time.
7. Practical Tips When Choosing an A9 Device
- Target Audience: Users looking for a simple smartphone for calls, messages, and occasional app use.
- What to Consider:
- Memory Size: Choose models with 64GB, as iOS takes up about 10–15GB.
- Battery Condition: In new devices (e.g., iPhone SE 2025 re-edition), the capacity should be at least 2000 mAh.
- Update Support: Verify if the device receives security patches.
Types of Devices:
- Budget smartphones (first-generation iPhone SE).
- Industrial tablets and terminals (due to low price and stability).
8. Final Conclusion: Who is the Apple A9 for?
This processor is suitable for those who:
- Are looking for the most affordable way to enter the Apple ecosystem.
- Do not plan to use their smartphone for gaming or demanding tasks.
- Value compactness and simplicity.
Key Benefits:
- Accessibility.
- Reliability (assuming battery replacement).
- Compatibility with basic iOS functions.
However, if your budget allows you to spend $300–400, it’s better to consider devices on the Snapdragon 7 Gen 3 or Apple A15 Bionic — they will serve you longer and will not disappoint in performance.
Conclusion
The Apple A9 is an example of a "long-liver" among mobile chips. It falls behind modern analogues but remains relevant for niche scenarios. In 2025, it can be recommended only as a temporary solution or a backup gadget. For most users, the choice of newer processors will be an investment in comfort and longevity.