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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Xiaomi unveiled the XRING O1 in May 2025 as its first self-developed flagship processor, and described it as using second-generation 3nm process technology. The chip debuted in the Xiaomi 15S Pro phone and Xiaomi Pad 7 Ultra tablet. Xiaomi disclosed its specifications, but the available sources do not identify the foundry or exact process variant, or establish how its performance compares with rival chips in independent tests.
What is Xiaomi’s XRING O1?
XRING O1 is Xiaomi’s flagship application processor, designed by its silicon division and integrated into Xiaomi devices. It is not an ordinary retail chip that consumers can buy separately. Xiaomi officially unveiled it in May 2025, presenting it as its first self-developed flagship processor.
The launch marks a step in a longer effort: Omdia traces Xiaomi’s chip development back to the Surge S1 in 2017, followed by specialized chips for image processing, power management and signal enhancement. XRING O1 is a more ambitious flagship processor effort, but it does not mean Xiaomi made every component of the system entirely in-house.
Which devices launched with XRING O1?
Xiaomi named the Xiaomi 15S Pro and Xiaomi Pad 7 Ultra as the processor’s launch devices. The company’s filing specifies that the 15S Pro launched in mainland China; Arm also identifies both products as XRING O1 debut devices. The cited sources do not establish current stock or broad international availability.
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What specifications did Xiaomi disclose?
Xiaomi’s Q1 2025 investor presentation describes XRING O1 as a premium flagship processor and reports these specifications:
- Process description: second-generation 3nm process technology.
- Transistors: 19 billion.
- CPU: 10 cores in a quad-cluster architecture.
- GPU: 16-core Arm Immortalis-G925.
These are Xiaomi’s reported launch specifications, not independently measured results. The process label is Xiaomi’s description of its manufacturing generation; the cited material does not provide a direct measurement of transistor dimensions.
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Is XRING O1 really 3nm, and who makes it?
Xiaomi describes XRING O1 as using second-generation 3nm process technology. The official materials cited here do not name the foundry or specify a process variant such as TSMC N3E. It is therefore accurate to report Xiaomi’s 3nm description, but not to treat a particular foundry or node variant as confirmed.
What did Xiaomi develop, and what comes from other companies?
Arm says XRING O1 uses Armv9.2 Cortex CPU cluster IP, Arm Immortalis GPU IP and CoreLink interconnect system IP. This distinction matters: “self-developed” refers to Xiaomi’s processor effort, not a claim that Xiaomi created every underlying IP block from scratch.
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Omdia also reports that XRING O1 combines Xiaomi’s self-developed application processor with a third-party modem. The reviewed sources do not name that modem supplier. This makes XRING O1 a Xiaomi-designed processor platform that incorporates external technology, rather than an entirely Xiaomi-made system-on-chip in every component.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How does XRING O1 compare with Snapdragon?
The cited sources do not provide controlled, independent benchmark results comparing XRING O1 with Snapdragon processors. Xiaomi’s presentation uses the phrase “Achieved Top-Tiered Performance,” but that is promotional language, not a verified comparative test.
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A meaningful comparison would need like-for-like evidence across more than a process label or core count: CPU and GPU performance, modem integration, power use and thermals, sustained performance in specific devices, software availability and the regions where those devices are sold. The available launch information establishes some architecture details and device context, but not those comparative results.
How much has Xiaomi invested in XRING?
Xiaomi reported investment of over RMB 13.5 billion as of April 2025. That is the company’s disclosed figure for XRING investment, not an independently audited estimate in the cited materials.
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Omdia analyst Zaker Li said the chip would need prolonged market validation and cost optimization before wide rollout, and that its near-term impact on Xiaomi’s chip supply would remain limited. This is analyst commentary, not a Xiaomi commitment or a verified forecast. It frames XRING O1 as a milestone in Xiaomi’s long-term ambition to develop more of its products end to end, rather than evidence that the company has already replaced its existing chip supply at scale.
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