Qualcomm Snapdragon 7s Gen 2 vs Qualcomm Snapdragon 870 5G
Qualcomm Snapdragon 7s Gen 2
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The Qualcomm Snapdragon 7s Gen 2 (SM7435-AB) is an ARMv9-A-based SoC for tablets and smartphones in the upper mid-range segment.
The Qualcomm Snapdragon 7s Gen 2 integrates a total of 8 cores divided into two clusters. The ARM Cortex-A78 cluster for high performance offers four cores with up to 2.4 GHz. The remaining 4 cores are based on the more energy-efficient A55 architecture and can be clocked at up to 1.95 GHz. All cores can run simultaneously or just a single cluster.
The SoC is similar to the Snapdragon 7 Gen 1 which offers a slightly lower clocked efficiency cluster and a different named GPU. The similar named Snapdragon 7+ Gen 2 is clearly faster with newer CPU cores. Although the naming suggest it, there was no Snapdragon 7s Gen 1.
LPDDR5 RAM is supported, with a frequency of up to 6,400 MHz.
The Snapdragon X62 5G modem is used as the modem. It supports a range of SA and NSA 5G mmWave and sub-6 GHz frequencies as well as Dynamic Spectrum Sharing (DSS). The X62 can achieve a maximum downlink speed of up to 2.9 Gbit/s in 5G networks.
The Adreno 710 forms the graphics subsystem. The GPU is capable of driving FHD+ displays at up to 144 Hz.
The Qualcomm Snapdragon 7s Gen 2 is manufactured using the modern 4nm EUV process.
Qualcomm Snapdragon 870 5G
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The Qualcomm Snapdragon 870 5G Mobile Platform (SM8250-AC) is a high-end smartphone and tablet SoC that Qualcomm announced in mid 2021. The SoC integrates a fast ‘Prime Core’ that clocks up to 3.2 GHz and three additional ARM Cortex-A77 performance cores, which can reach up to 2.42 GHz. These are complemented by four power-saving ARM Cortex-A55 cores that clock up to a maximum of 1.8 GHz. Compared to the similar and older Snapdragon 865+, the Prime Core clocks 100 MHz faster and the GPU is slightly higher clocked.
Therefore, the Snapdragon 870 is slightly faster than the old Snapdragon 865 and 865 Plus and slots in behind the high end Snapdragon 888.
The Mobile Platform integrates a Qualcomm X55 5G modem with Sub-5 and mmWave support and global 5G bands with up to 7.5 GBit/s (download) speed. The SmartConnect 6800 modem supports Wi-Fi 6 with 8x8 MU-MIMU and 60 GHz 11ay up to 10 Gbps.
The integrated GPU is still called Adreno 650 and offers a slightly higher clock speed of 670 MHz.
The on board Hexagon 698 DSP now offers a KI performance of up to 15 TOPS (up from 7 TOPS in the 855) and still uses a combination of CPU, GPU, HVX and Tensor cores. The Spectra 480 ISP is also untouched. The integrated Computer Vision Engine (CV-ISP) now supports Dolby Vision, 8K videos and 200 megapixel photos.
The built-in memory controller supports LPDDR5 with up to 2,750 MHz and LPDDR4X with 2,133 MHz.
The SoC is manufactured in the modern and power efficient 7nm process.
| Model | Qualcomm Snapdragon 7s Gen 2 | Qualcomm Snapdragon 870 5G | ||||||||||||
| Codename | Cortex-A78 / A55 | Cortex-A77 / A55 (Kryo 585) | ||||||||||||
| Series | Qualcomm Snapdragon | Qualcomm Snapdragon | ||||||||||||
| Clock | 1950 - 2400 MHz | 2420 - 3200 MHz | ||||||||||||
| Cores / Threads | 8 / 8 4 x 2.4 GHz ARM Cortex-A78 4 x 2.0 GHz ARM Cortex-A55 | 8 / 8 | ||||||||||||
| Technology | 4 nm | 7 nm | ||||||||||||
| iGPU | Qualcomm Adreno 710 | Qualcomm Adreno 650 ( - 670 MHz) | ||||||||||||
| Architecture | ARM | ARM | ||||||||||||
| Announced | ||||||||||||||
| Manufacturer | www.qualcomm.com | www.qualcomm.com | ||||||||||||
| Series: Snapdragon Cortex-A77 / A55 (Kryo 585) |
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| L2 Cache | 1.8 MB | |||||||||||||
| L3 Cache | 7 MB | |||||||||||||
| TDP | 5 Watt | |||||||||||||
| Features | Adreno 650 GPU, Spectra 480 ISP, LPDDR5 2750 MHz / LPDDR4X 2133 MHz Memory Controller |
Benchmarks
Average Benchmarks Qualcomm Snapdragon 7s Gen 2 → 100% n=17
Average Benchmarks Qualcomm Snapdragon 870 5G → 109% n=17
- Average benchmark values for this graphics card* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation
