Qualcomm Snapdragon 845 vs Qualcomm Snapdragon 8 Gen 2 vs Qualcomm Snapdragon 850

Qualcomm Snapdragon 845

The Qualcomm Snapdragon 845 Mobile Platform (or SD845) is a high-end SoC for smartphones that was introduced in early 2018 and manufactured in 10 nm LPP FinFET at TSMC. Integrates 4x Kryo 385 cores (Cortex-A75) at up to 2.8 GHz (max) for performance and 4x Kryo 385 at 1.8 GHz (max) for efficiency. Furthermore offers an X20 LTE modem (Cat. 18 1.2 Gbps downlink, Cat 13 150 Mbps uplink), ac-WiFi and a dual-channel 32-Bit 1866 MHz LPDDR4x memory controller.

Qualcomm Snapdragon 8 Gen 2

The Qualcomm Snapdragon 8 Gen 2 Mobile Platform is a high-end SoC for smartphones that was introduced in late 2022 and manufactured in 4 nm at TSMC (N4P). It integrates four different CPU clusters. A fast and big prime core based on the ARM Cortex-X3 architecture and clocked at up to 3.2 GHz for 64 bit applications. Two more ARM Cortex-A715 based performance cores clocked at up to 2.8 GHz (also only for 64 bit apps). Two more Cortex-A710 performance cores at up to 2.8 GHz that can also be used for older apps and three efficiency cores (ARM Cortex-A510 with up to 2 GHz). All cores can use the shared 8 MB level 3 cache.

Thanks to the new architecture and high clock rates, the SD 8 Gen 2 is the fastest mobile CPU for Android based devices and is only topped by current Apple SoCs like the Apple A16 (see benchmarks below).

The chip also integrates a Hexagon accelerator for AI workloads (tensor, scalar and vector). Qualcomm states that its one of the first chips with INT4 support and up to 4.35x performance compared to the previous generation. 

The 18-Bit-Spectra ISP is able to process photos with up to 200 MP and work with videos up to 8k30 (including 10-bit, HDR10+, HLG and Dolby Vision).

A big improvement of the Snapdragon 8 G2 is the integrated Adreno 740 GPU, that now supports Hardware Raytracing and tops even the iGPU in the Apple A16.

The integrated AI Engine can offer up to 4x faster AI performance thanks to the bigger Tensor engine. The 18-Bit-Spectra-ISP also saw some big improvements and is now called Snapdragon Sight.

The integrated Adreno 730 offers a 30% graphics boost compared to the previous Adreno 660.

The integrated Snapdragon X70 5G modem is also new as is the FastConnect 7800 modem with Wi-Fi 7 and Bluetooth 5.3 support.

Qualcomm Snapdragon 850

The Qualcomm Snapdragon 850 Mobile Compute Platform (or SD850) is a ARM based SoC for Windows laptops. It is a higher clocked version (3 versus 2.8 GHz) of the Snapdragon 845 for smartphones and also manufactured in 10 nm LPP FinFET at TSMC. It integrates 4x Kryo 385 cores (Cortex-A75) at up to 2.95 GHz (max) for performance and 4x Kryo 385 (at 1.8 GHz?) for efficiency. Furthermore offers an X20 LTE modem (Cat. 18 1.2 Gbps downlink, Cat 13 150 Mbps uplink), ac-WiFi and a dual-channel 32-Bit 1866 MHz LPDDR4x memory controller.

The performance of the Snapdragon 850 in Windows is in theory similar to a Intel Core i5 of the Y-series (e.g. Core i5-7y54). However, this is only the case for native ARM64 compiled applications and games. 32-bit applications that are not compiled for the ARM architecture only run in an emulation and perform much worse (e.g. see Cinebench R11.5 benchmark). 64-bit Intel/AMD apps are not supported at all.

The chip is very power efficient as its produced at TSMC in the modern 10nm LPP process. Therefore, laptops using the Snapdragon 850 can be passively cooled (no fan) and should not throttle under constant load.