It takes real swagger to kick off an industry shift, and MediaTek pulled it off when the Dimensity 9300 ditched traditional efficiency cores back in late 2023. Fast-forward two years and the Dimensity 9500 is the strongest proof yet that the gamble paid off, going toe-to-toe with Qualcomm’s latest and putting pressure on rivals that still cling to old core layouts—most notably Samsung’s Exynos line.
Here’s how we got here. Qualcomm’s Snapdragon 8 Elite Gen 3, launched in October 2023, was the last flagship in its family to include efficiency cores, using a hybrid CPU cluster:
– 1 ARM Cortex-X4 core
– 3 ARM Cortex-A720 cores
– 2 additional ARM Cortex-A720 cores
– 2 ARM Cortex-A520 efficiency cores
In 2024, the Snapdragon 8 Elite (Gen 4) dropped efficiency cores entirely and adopted a custom Oryon setup built to scale down for light work without wasting silicon on tiny cores:
– 2 high-performance Oryon (Phoenix L) cores
– 6 medium-performance Oryon (Phoenix M) cores
The message was clear: modern, higher-frequency cores can downclock efficiently enough to handle background tasks, undermining the original purpose of efficiency cores. MediaTek led the way, and one of the industry’s heavyweights followed—turning a bold idea into a trend.
Of course, a chip’s real-world performance is bigger than any one design choice. But since 2023, MediaTek’s Dimensity family has surged in competitiveness, and the Dimensity 9500 is the standout. Its 8-core CPU is built to deliver across sustained workloads and quick bursts:
– 1 ARM C1-Ultra core at 4.21 GHz with 2MB L2 cache
– 3 ARM C1-Premium cores at 3.50 GHz with 1MB L2 cache each
– 4 ARM C1-Pro cores at 2.70 GHz
Benchmarks back it up. Dimensity 9500 posts a higher AnTuTu 10 score than Snapdragon 8 Elite Gen 5 and remains strong in Geekbench 6, signaling top-tier single-core and multi-core capability.
Meanwhile, Samsung is still committed to including efficiency cores. The Exynos 2500, unveiled in June 2025, launched months ahead of the Dimensity 9500, yet the performance gap makes it feel like a wider generational divide. Beyond leaving performance on the table with smaller cores, Exynos 2500 has also been associated with yield and thermal stability concerns—familiar pain points that likely drive Samsung’s conservative approach.
Here’s the twist: there’s growing anecdotal evidence that Samsung’s 2nm GAA process is far more efficient than its past nodes. Reports suggest the upcoming Exynos 2600 has achieved stable yields with roughly 30 percent gains in efficiency and thermal behavior, along with a notably stronger NPU for on-device AI. A leaked Geekbench 6 run placed Exynos 2600 at 3,455 in single-core and 11,621 in multi-core—essentially matching Dimensity 9500 in single-core and substantially surpassing it in multi-core. The obvious question follows: how much better could Exynos 2600 be if Samsung fully embraced a no-efficiency-core design like its rivals?
If that pivot doesn’t happen soon, the business impact could be steep. One estimate pegs Samsung’s bill at around $4 billion just to secure Snapdragon 8 Elite Gen 5 chips for the Galaxy S26 Ultra—money that might otherwise be saved or reinvested if in-house silicon consistently matched or beat competing flagships.
Key takeaways:
– MediaTek’s early move to eliminate efficiency cores has been validated by strong results, culminating in the Dimensity 9500 outpacing or matching top contenders in major benchmarks.
– Qualcomm followed the same path with Oryon-based Snapdragon 8 Elite designs, reinforcing the industry shift away from small efficiency cores.
– Samsung’s adherence to efficiency cores appears to limit peak performance on Exynos, despite promising efficiency gains from its 2nm GAA process and encouraging Exynos 2600 leaks.
– Dropping efficiency cores in future Exynos chips—potentially with an Exynos 2700—could unlock significantly higher performance and reduce reliance on costly third-party flagship SoCs.
Bottom line: the flagship smartphone CPU battle is evolving past the old big-little formula. With Dimensity 9500 leading the charge and Oryon-based Snapdragon parts proving the concept, the next leap for Exynos may simply be letting go of efficiency cores and letting advanced process technology do the rest.
