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Kryo AI simulator

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Kryo

Qualcomm Kryo is a series of custom or semi-custom ARM-based CPUs included in the Snapdragon line of SoCs.

These CPUs implement the ARM 64-bit instruction set and serve as the successor to the previous 32-bit Krait CPUs. It was first introduced in the Snapdragon 820 (2015). In 2017 Qualcomm released the Snapdragon 636 and Snapdragon 660, the first mid-range Kryo SoCs. In 2018 the first entry-level SoC with Kryo architecture, the Snapdragon 632, was released.

First announced in September 2015 and used in the Snapdragon 820 SoC. The original Kryo cores can be used in both parts of the big.LITTLE configuration, where two dual-core clusters (in the case of Snapdragon 820 and 821) run at different clock frequency, similar to how both Cortex-A53 clusters work in the Snapdragon 615.

The Kryo in the 820/821 is an in-house custom ARMv8.0-A (AArch64/AArch32) design and not based on an ARM Cortex design.

The Kryo 200 Series CPUs is not a derivative of the original Kryo microarchitecture, but rather is a semi-custom design licensed under ARM’s Built on ARM Cortex Technology (BoC) license. The Kryo 200 Series CPUs is derivative of the ARM's Cortex-A73 for the Performance/Gold cluster and Cortex-A53 for the Efficiency/Silver cluster in a big.LITTLE arrangement.

The Kryo 280 CPU was announced along with the Snapdragon 835 Mobile Platform in November 2016. Compared to the original Kryo the new Kryo 280 core has improved integer instructions per clock but lower floating point instructions per clock. However overall the 835 was praised by reviewers for offering significant performance and efficiency advantage compared to the 820 and Exynos 8895 largely due to improvements in CPU scheduling and DVFS systems.

The Kryo 265 CPU was announced along with the Snapdragon 680 Mobile Platform in October 2021.

The Kryo 260 CPU was announced along with the Snapdragon 660 Mobile Platform for mid-range smartphone in May 2017. The Kryo 260 cores are also used in the Snapdragon 636, Snapdragon 665, and Snapdragon 662.

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