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Exynos 2100 still can’t keep up with Snapdragon 888

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Last updated: February 10th, 2021 at 09:09 UTC+01:00

The Exynos 2100 is a massive improvement over the Exynos 990 in terms of performance and power efficiency. However, it still can't keep up with the Snapdragon 888, which appears to be a better chip overall. The folks over at AnandTech have performed an in-depth analysis of the performance and power efficiency of the Exynos 2100 and compared it with the Snapdragon 888.

The test involved the Exynos 2100 and Snapdragon 888 variants of the Galaxy S21 Ultra. After performing a series of tests on both chips, it looks like Samsung's 5nm (5LPE) fabrication process offers an improvement in power efficiency to the Exynos 2100 and the Snapdragon 888 compared to their predecessors. However, the South Korean firm's best fabrication process is only as efficient as TSMC's 7nm process (N7P).

The Exynos 2100's single-threaded CPU performance turned out to be a 27% improvement over the Exynos 990 (as opposed to 19% improvement claimed by Samsung). In terms of memory latency, the new Exynos chip fared worse than last year's flaghsip Exynos processor (clocking in at 136ns vs 121ns) as Samsung cheaped out on L2 cache for Cortex-A55 and Cortex-X1 cores. The Exynos 2100 has 512KB L2 cache for the Cortex-X1 and 64KB L2 cache for the Cortex-A55 cores, while the Snapdragon 888 has 1MB L2 cache for the Cortex-X1 and 128KB L2 cache for the Cortex-A55 cores.

The Snapdragon 888 performed better than the Exynos 2100 in most tasks while consuming less power. Samsung's new processor still throttles earlier than Qualcomm's flagship, resulting in lower performance under sustained load. Even when the Exynos 2100-powered Galaxy S21 Ultra was put in a freezer while performing benchmark tests, it performed similar to the Snapdragon 888-equipped Galaxy S21 Ultra under a fan. This means that the Exynos 2100 will most likely throttle under real-world scenarios.

Samsung Exynos 2100 Power Efficiency SPEC2006

The Mali-G78 GPU inside the Exynos 2100 turned out to be 40% faster than the Mali-G77 GPU used in the Exynos 990, matching Samsung's claims. However, it is only as good as the Snapdragon 865+'s Adreno 650 GPU under sustained workloads. While the Snapdragon 888's Adreno 660 GPU is better than the Exynos 2100's Mali-G78 GPU, both chips consumed a lot of power (around 8W, which is bad) and then throttled after a few minutes, settling around 3W.

Samsung Exynos 2100 GPU Performance Peak Sustained GFXBench Aztec Ruins

The Exynos 2100 seems to consume 18-35% higher power compared to the Snapdragon 888. And this behaviour affects the battery life results. PCMark Work 2.0 and web browsing battery life test shows that the Snapdragon 888 version of the Galaxy S21 Ultra lasts longer on a single charge compared to the Exynos 2100 version of the phone. In fact, the chipset performed worse than the Exynos 990 Galaxy S20 Ultra in battery life tests, but that could be an anomaly.

The company has improved a lot compared to last year, but it still needs to work harder if it wants to defeat Qualcomm in the smartphone processor game next year. Samsung LSI needs to improve the CPU performance and Samsung Foundry has to improve the efficiency of its 5nm process. You can read the complete in-depth article on AnandTech's website via the source link below.

Source General ExynosExynos 2100
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