Apple A12 Bionic vs Apple A19 Pro
Apple A12 Bionic
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The Apple A12 Bionic is a System on a Chip (SoC) from Apple that is found in the iPhone Xs and Xr. It was announced late 2018 and offers 6 cores divided in 2 performance cores and four power efficiency cores. Compared to the previous A11 Bionic, the A12 should offer a 15% improved CPU performance for the performance cores and a 50% lower power consumption for the efficiency cores (both according to Apple).
The chip also includes a new GPU that is advertised as 50% faster, the M12 Motion co-processor and a Neural Engine with 8 cores for up to 5 trillion operations per second.
With 6.9 billion transistors, the A12 Bionic is a big chip especially compared to the Snapdragon 835 (3 Billion) or a Skylake desktop quad-core Soc (1.75 Billion). Compared to the A11, the A12 integrates 60% more transistors.
Apple A19 Pro
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The Apple A19 Pro (codenamed Thera) is a smartphone chip from Apple that was launched in 2025. It integrates 6 CPU cores divided into two performance cores with up to 4.26 GHz and 16 MB L2 cache and four efficiency cores with up to 2.6 GHz and 6 MB L2 cache. Together, the CPU cores can access the 32 MB system level cache (SLC). L2 and SLC cache size is the main difference to the cheaper Apple A19.
The integrated GPU can offer 5 cores (iPhone Air) or all 6 cores (iPhone 17 Pro) depending on the model and clocks with up to 1620 MHz (via @faridofanani96).
The integrated AI unit called Neural Engine still offers 16 cores, but with improved memory bandwidth according to Apple. Furthermore, the engine can work together with the new AI units in the GPU.
The integrated LPDDR5X memory controller in the iPhones supports 12 GB LPDDR5X-9600 (resp. 8533 in the Air) with up to 75.8 GB/s memory bandwidth.
The CPU performance is improved compared to the Apple A18 Pro by approx. 15% (single core) or 20% (multi-core) and thanks to the new vapor-chamber cooling in the iPhones, sustained performance in particular has been improved.
The chip is manufactured in the modern N3P process at TSMC.
| Model | Apple A12 Bionic | Apple A19 Pro | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series | Apple Apple A-Series | Apple Apple A-Series | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series: Apple A-Series |
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| Clock | <=2490 MHz | 2600 - 4260 MHz | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| L1 Cache | 256 KB | 1.4 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| L2 Cache | 8 MB | 22 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cores / Threads | 6 / 6 | 6 / 6 2 x 4.3 GHz Apple A19 P-Core 4 x 2.6 GHz Apple A19 E-Core | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Transistors | 6900 Million | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Technology | 7 nm | 3 nm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Features | ARMv8 Instruction Set | 16-core Neural Engine, USB 3.2 Gen 2 (10 Gbps) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| iGPU | Apple A12 Bionic GPU | Apple A19 Pro 6-Core GPU ( - 1600 MHz) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| NPU / AI | 5 TOPS INT8 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Architecture | ARM | ARM | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Announced | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| L3 Cache | 32 MB |
Benchmarks
Average Benchmarks Apple A12 Bionic → 100% n=4
Average Benchmarks Apple A19 Pro → 289% n=4
- Average benchmark values for this graphics card* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation
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