Dimensity CX C10 Max brings familiar Cortex cores to Googlebook
The C10 Max combines one Arm Cortex-X925 running at up to 3.73 GHz, three Cortex-X4 cores, and four Cortex-A720 cores. MediaTek calls this an “All Big Core” eight-core CPU, built on a second-generation TSMC 3 nm process. Its official specifications also list 12 MB of L3 cache and 10 MB of system-level cache.
Those are familiar ingredients. Notebookcheck highlighted the older Cortex designs in its launch coverage, while Tom’s Hardware also identified the CPU configuration’s continuity with MediaTek’s existing Dimensity processors. More importantly for laptop buyers, MediaTek’s own specifications show that the Kompanio Ultra 910 has exactly the same CPU-core arrangement and shared-cache capacities.
That establishes the substance behind the “skips Lumex” headline: the C10 Max uses the named Cortex designs rather than introducing a new CPU-core lineup. It does not establish why MediaTek chose them. The company has not documented a decision to reject Lumex or another newer Arm design, and the specification sheet cannot reveal whether development timing, cost, software work, or some other consideration drove the choice.
Nor does the similarity prove that MediaTek simply renamed an identical piece of silicon. The published platform specifications contain changes, including a different camera-processing provision. The defensible conclusion is narrower: the C10 Max carries forward much of the Kompanio Ultra 910’s documented computing architecture, with selected increases.
Kompanio Ultra 910 provides the meaningful before-and-after
Putting MediaTek’s two product pages side by side makes the scale of the update easier to judge.
| Published specification | Kompanio Ultra 910 | Dimensity CX C10 Max |
|---|---|---|
| CPU configuration | One Cortex-X925, three Cortex-X4, four Cortex-A720 | Same configuration |
| Maximum Cortex-X925 frequency | 3.62 GHz | 3.73 GHz |
| Shared caches | 12 MB L3 and 10 MB system-level cache | Same capacities |
| Maximum LPDDR5X data rate | 8,533 Mbps | 9,600 Mbps |
| GPU | Arm Immortalis-G925 MC11 | Arm Immortalis-G925 MC11 |
| AI accelerator | MediaTek NPU 890, advertised up to 50 TOPS | MediaTek NPU 890, advertised up to 55 TOPS dense |
| Storage support | UFS 4.0 | UFS 4.0 |
| Camera provision | Support for a third-party camera | Imagiq 1090 image signal processor, supporting up to 32 MP |
Calculated from those published figures, the maximum X925 frequency rises by approximately 3%, while the maximum supported memory data rate rises by approximately 12.5%. The advertised AI-performance number increases by 10%, although that comparison is between vendor ratings, not measurements of the same application.
These percentages describe specification changes, not application speedups. A 3% higher maximum CPU clock does not establish that an entire laptop will run 3% faster, and a higher supported memory rate does not establish the memory configuration a manufacturer will ship. Likewise, the unchanged GPU model and core count provide no basis for claiming a new graphics generation.
The smartphone comparison reinforces the architectural continuity without proving identical hardware. MediaTek’s Dimensity 9400 product page lists the same one-plus-three-plus-four CPU arrangement and the same shared-cache capacities. But it specifies a 12-core Immortalis-G925 GPU, whereas the C10 Max has the 11-core version. Calling the new laptop processor merely a phone chip with a different label would erase documented differences.
For an existing Kompanio Ultra 910 owner, the specification changes alone are therefore a weak reason to replace a laptop. For someone choosing a new machine, they identify the right baseline: comparisons should establish what the finished Googlebook delivers beyond an existing premium Chromebook, rather than assume that the new Dimensity CX name guarantees a large jump.
Googlebook’s AI promise depends on software as well as the NPU
MediaTek places the NPU 890 at the center of its Googlebook pitch. An NPU, or neural processing unit, is the chip’s dedicated AI accelerator; the C10 Max’s advertised ceiling is 55 trillion operations per second, expressed as 55 TOPS. MediaTek specifically labels that figure as dense AI performance.
The company says the accelerator is designed for Gemini Intelligence and on-device agentic AI—software that acts on a user’s behalf, rather than only returning an answer. Its product page describes local transcription, summarization, and always-on agents, while the launch announcement emphasizes faster responses and potential privacy benefits. Those are MediaTek’s capability and efficiency claims, not independently measured results from a shipping Googlebook.
There is a particularly useful warning in the predecessor’s documentation. Although the Kompanio Ultra 910 page advertises agentic-AI capabilities, Bluetooth 6.0, and ray-traced graphics, its footnote explicitly says that agentic AI, Bluetooth 6.0, and ray tracing are not supported on ChromeOS.
That restriction belongs to the Kompanio Ultra 910 documentation; it should not be transferred to the C10 Max. Its significance is that MediaTek’s own product record demonstrates the gap between hardware capability and operating-system support. The presence of an NPU or GPU feature in a processor specification is not enough to establish which functions buyers can use.
The same boundary applies to privacy. Hardware designed to process AI locally does not, by itself, establish that every Gemini feature or every action taken by an agent stays on the device. Buyers considering the Googlebook for sensitive work need the actual feature’s processing and data-handling behavior, rather than a general assurance derived from the processor’s TOPS rating.
Dimensity CX C10 Max’s laptop features deserve a device-level check
Beyond the CPU and NPU, the C10 Max offers a useful collection of laptop capabilities. MediaTek specifies an internal display up to 4K at 60 Hz and support for up to two external 4K displays through DisplayPort and Multi-Stream Transport. The latter is the display-link capability listed for multiple external screens; the specification does not establish the ports or external refresh rates of an unannounced laptop.
The processor also supports hardware decoding of 10-bit HEVC, AVC, VP9, and AV1 video at up to 4K60. These are supported video formats and processing limits, not evidence of measured streaming battery life. Much of this display and video support also appears in the Kompanio Ultra 910 specifications, so it should not be presented as wholly new.
Camera processing is a more visible difference in the published comparison. The C10 Max lists an integrated Imagiq 1090 image signal processor with support for cameras up to 32 megapixels, electronic image stabilization, HDR video, and automatic zoom. That gives laptop manufacturers a documented set of conferencing capabilities to build around, but it does not promise a 32-megapixel webcam in every device.
MediaTek also advertises Wi-Fi 7 at up to 7.3 Gbps and dual-engine Bluetooth 6.0. Its broader efficiency pitch includes thin, light, potentially fanless designs with all-day battery life. The battery qualification is important: the product page says the estimate is based on Google’s Power Load Test with a 60 Wh battery, and that results vary with settings, usage, and other factors.
That is a vendor estimate under stated conditions, not a measured runtime for the eventual retail laptop. MediaTek’s announcement identifies an upcoming premium, ultra-portable Googlebook, but does not name the debut model or establish its price and retail availability. Those missing device details prevent a meaningful value comparison with a specific Windows laptop or existing Chromebook.
Googlebook buyers should wait for the laptop, not a newer core name
Keep the C10 Max on a shortlist if the promised Googlebook format suits your work, but defer a purchase judgment until the finished machine’s software, configuration, and price are established. The practical checks follow directly from what MediaTek has—and has not—announced.
- Compare a C10 Max laptop with Kompanio Ultra 910 hardware, because the CPU configuration, shared caches, GPU model, and NPU family carry over.
- Treat the higher CPU clock, memory data rate, and AI rating as specification increases until application tests show their effect.
- Confirm which Gemini and agentic-AI features are available on the shipping Googlebook, including whether the functions you need process data locally.
- Verify the laptop’s external-display implementation and camera hardware rather than assuming every processor capability is included.
- Judge fanless operation and battery endurance using the finished device’s configuration and independent testing, not the processor’s all-day claim.
The C10 Max’s established Cortex cores make this an evolutionary hardware announcement, but they do not settle whether the eventual Googlebook will be a good laptop. MediaTek has documented a familiar computing foundation with higher limits in selected areas and a stronger emphasis on Googlebook AI. The purchase decision belongs with the shipping machine: its usable software, sustained performance, battery life, and price will determine whether that evolution earns a premium.