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The MediaTek Dimensity 9400+ has a more elaborate flagship specification sheet, including an eight-core all-big-core CPU and a 12-core GPU. Apple’s A18, specified in the iPhone 16, has a six-core CPU, five-core GPU, and 16-core Neural Engine. Neither core counts nor the available benchmark totals settle which phone is better: the chips run in different device and operating-system ecosystems, and the cited AnTuTu aggregator warns that its iOS and Android results are not directly comparable.
How the specifications compare
The A18 figures below describe Apple’s iPhone 16 implementation, not a processor sold separately. The Dimensity 9400+ figures are MediaTek platform specifications; handset makers determine how those capabilities are implemented and which are available in a finished phone.
| Specification | Apple A18 | MediaTek Dimensity 9400+ |
|---|---|---|
| CPU | 6 cores: 2 performance and 4 efficiency cores. Apple iPhone 16 specifications. | 8 cores: 1 Arm Cortex-X925 up to 3.73 GHz, 3 Cortex-X4, and 4 Cortex-A720. MediaTek product specifications. |
| GPU | 5-core GPU. Apple iPhone 16 specifications. | Arm Immortalis-G925 MC12. MediaTek product specifications. |
| AI hardware | 16-core Neural Engine. Apple iPhone 16 specifications. | NPU 890. MediaTek product specifications. |
| Manufacturing process | Second-generation 3-nanometer technology, according to Apple’s September 9, 2024 announcement. Apple announcement. | Not stated on the cited MediaTek product page. |
| Memory and storage interfaces | Not stated in the cited iPhone 16 specification summary. | LPDDR5X and UFS 4 with MCQ. These are platform capabilities; handset implementation may vary. MediaTek product specifications. |
| Connectivity listed | Not stated in the cited A18 specification summary. | Wi-Fi 7 tri-band concurrency, Bluetooth 6.0, and a 3GPP Release 17 modem. Actual phone support depends on implementation. MediaTek product specifications. |
| Cache | Not stated in the cited A18 specification summary. | 12 MB L3 cache and 10 MB system-level cache. MediaTek product specifications. |
What the benchmark comparison shows—and what it cannot
NanoReview’s comparison page, accessed October 7, 2026, displays AnTuTu 11 totals of 2,874,956 for the Dimensity 9400+ (171 tests) and 1,972,476 for the A18 (29 tests). Those are sample aggregates from devices running different operating systems, not results from a controlled, matched-phone test. NanoReview explicitly cautions that iOS and Android AnTuTu results are not directly comparable. See NanoReview’s comparison and caveat.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsThe page also presents Geekbench 6 comparisons and summary scores, but the available evidence does not establish a controlled, matched-device comparison that can be used to infer battery life, sustained gaming performance, or chip efficiency. A score depends on the tested phone and conditions; it should not be treated as a guaranteed result for every device using either platform.
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Vendor performance claims use different baselines
Apple’s 2024 A18 claims compare it with A16 Bionic, not with the Dimensity 9400+. MediaTek’s 2025 claims compare particular Dimensity features with their own stated baselines. These figures provide context for each company’s claims, not a head-to-head result.
- Apple, 2024: A18’s six-core CPU is claimed to be 30% faster than A16 Bionic; its five-core GPU is claimed to be up to 40% faster and 35% more efficient; and its Neural Engine is claimed to run machine-learning models up to 2x faster. Apple’s iPhone 16 announcement.
- MediaTek, 2025: Speculative Decoding+ is claimed to deliver 20% faster agentic AI performance compared with Dimensity 9400. MediaTek announcement.
- MediaTek, 2025: MFRC 2.0+ is claimed to provide up to 40% greater power efficiency compared with operation without MFRC. UltraSave 4.0 is claimed to provide 18% 5G power savings. These are feature-specific vendor claims, not independent A18 comparisons. MediaTek announcement; MediaTek product page.
Which chip should you choose?
Choose a phone, not a core count. The A18 is found in Apple’s iPhone 16 context; a Dimensity 9400+ is a platform used in phones whose specific models and implementations must be assessed individually. The available evidence does not establish a particular Dimensity 9400+ handset or a matched A18-versus-9400+ test of battery life, sustained thermals, or gaming.
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- For everyday speed: look for independent CPU single-core and multi-core results from the exact phones you are considering, rather than comparing unlike aggregate scores.
- For games: check game availability and compatibility, graphics settings, frame-rate stability over longer sessions, and phone temperature. GPU core count alone does not answer these questions.
- For battery life: compare device-level tests under similar conditions. Battery capacity, display, modem configuration, software, and thermal design all affect the outcome; the cited evidence does not provide a matched power-efficiency test.
- For AI features: check which on-device features are supported by the phone’s operating system and software, not just the neural processor’s core count or a vendor claim.
- For connectivity: confirm the finished phone’s supported bands and enabled features for your region. A platform’s listed capabilities do not guarantee every phone implements them.
- For long-term value: compare the actual phone price, update policy, app ecosystem, camera and display quality, and other features you will use.
Bottom line on A18 versus Dimensity 9400+
The Dimensity 9400+ lists more CPU cores and a 12-core GPU, while the A18 has Apple’s specified six-core CPU, five-core GPU, and 16-core Neural Engine in iPhone 16. The benchmark snapshot favors the Dimensity in its displayed AnTuTu totals, but its cross-platform caveat prevents treating that as a decisive direct comparison. The right choice depends on the complete phone, your preferred software ecosystem, and reliable device-level tests for the tasks that matter to you.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
