Samsung is weighing its processor selection for the upcoming Galaxy S27 Ultra after internal performance evaluations revealed thermal management challenges in Qualcomm’s next-generation chipset, according to industry sources reported by the Seoul Economic Daily.
The Mobile eXperience (MX) division, part of Samsung’s Device Experience unit, has been running final verification benchmarks on Qualcomm’s Snapdragon 8 Elite Extreme Gen 6.
Sources familiar with the internal testing stated that the processor repeatedly exceeded temperature thresholds under sustained, intensive workloads, resulting in thermal throttling and subsequent drops in processing speeds.
Samsung reportedly shared its test findings with Qualcomm last month, setting a mid-October benchmark for thermal improvements. While both engineering teams continue to optimize and retest the hardware, sources indicate the processor has not yet met the stability specifications required for Samsung’s top-tier smartphone.
Thermal Challenges in High-Performance Mobile Silicon
The Snapdragon 8 Elite Extreme Gen 6, unveiled last month, was designed with a focus on “agentic AI”—on-device capabilities enabling smartphones to evaluate context and autonomously execute multi-step tasks. To support these workloads locally, Qualcomm incorporated architectural gains across both CPU and GPU blocks.
Sustained thermal management remains a critical performance variable in flagship smartphones. When silicon temperatures climb during extended computing sessions, such as intensive gaming or local model processing, protective throttling kicks in to lower clock speeds.
For a flagship device handling high-bitrate video capture, complex neural network processing, and graphics rendering, thermal stability directly dictates sustained user performance.
Mass Production Timelines and the Exynos Alternative
A decision on the platform is driven by manufacturing lead times. Mass production for the Galaxy S27 series is scheduled to begin late this year, requiring Samsung to lock in component selections this month to prevent assembly delays.
If Qualcomm demonstrates the necessary thermal improvements within the agreed window, Samsung is expected to deploy the Snapdragon platform as planned. However, if the thermal ceiling remains an issue, Samsung may deploy its in-house Exynos 2700 processor to the Ultra tier to keep production on schedule.
The Exynos 2700 is developed by Samsung’s System LSI division and manufactured via Samsung Foundry’s SF2P node (second-generation 2-nanometer). The architecture emphasizes power efficiency gains and sustained compute performance relative to earlier generations.
Historical Context and Strategic Implications
Adopting the Exynos 2700 in the Galaxy S27 Ultra would mark the first time an in-house chip has powered an Ultra model since 2022.
| Period | Model Lineup | Processor Strategy |
| 2021 | Galaxy S21 Ultra | Exynos 2100 used in domestic models; faced thermal criticism |
| 2022 | Galaxy S22 Ultra | Exynos 2200 used in select regional markets (Europe) |
| 2023–2025 | Galaxy S23, S24, S25 Ultra | Global deployment standardized on Qualcomm Snapdragon |
| 2024, 2026 | Galaxy S24 / S26 (Base & Plus) | Dual-sourcing strategy retained; Exynos used in regional base models |
| 2027 (Projected) | Galaxy S27 Ultra | Final selection pending between Snapdragon and Exynos 2700 |
Selecting the Exynos 2700 for the Ultra tier would also carry broader commercial implications for Samsung:
- Foundry Utilization: Increased demand for SF2P advanced 2-nanometer capacity.
- Component Costs: Mitigation of rising external application processor procurement expenses, which climbed from 6.21 trillion won in 2021 to 13.83 trillion won last year, followed by 7.44 trillion won in the first half of this year.
- Silicon Independence: Reinforcement of System LSI’s position in high-tier flagship silicon.
Qualcomm has not been eliminated from consideration for the Galaxy S27 Ultra. Both companies remain engaged in resolving the thermal constraints ahead of the final procurement deadline.