Samsung Galaxy S8 shows better performance than other Android rivals like the HTC U Ultra, LG G6 or OnePlus 3T, Huawei P10 Plus.
The couple of Galaxy S8 still have 4GB of RAM as S7, but Samsung upgrades the processor to the Snapdragon 835 (sold in the US) and Exynos 8895 (the international version). This makes the performance of the phones increased sharply.
In the GSM Arena test with familiar performance rating tools such as Antutu Benchmark and GeekBench 4, the Galaxy S8 won. Only in its own evaluation of single-core processing capabilities, the new Samsung model represents lower result than the iPhone 7 Plus.
Overall performance rating in Antutu 6 (higher score is better)
Evaluate the processing power of the chip in multi-core mode (higher score is better)
Evaluate the processing power of the chip in single-core mode (higher scores are better)