Qualcomm Snapdragon 820 vs AMD Ryzen 7 7840H

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CPU comparison with benchmarks


Qualcomm Snapdragon 820 CPU1 vs CPU2 AMD Ryzen 7 7840H
Qualcomm Snapdragon 820 AMD Ryzen 7 7840H

CPU comparison

In this CPU comparison, we compare the Qualcomm Snapdragon 820 and the AMD Ryzen 7 7840H and use benchmarks to check which processor is faster.

We compare the Qualcomm Snapdragon 820 4 core processor released in Q4/2015 with the AMD Ryzen 7 7840H which has 8 CPU cores and was introduced in Q1/2023.
Qualcomm Snapdragon (103) Family AMD Ryzen 7 (70)
Qualcomm Snapdragon 820 (3) CPU group AMD Ryzen 7040 (21)
3 Generation 6
Kryo Architecture Phoenix (Zen 4)
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Qualcomm Snapdragon 820 is a 4 core processor with a clock frequency of 2.15 GHz. The processor can compute 4 threads at the same time. The AMD Ryzen 7 7840H clocks with 3.80 GHz (5.10 GHz), has 8 CPU cores and can calculate 16 threads in parallel.

Qualcomm Snapdragon 820 Characteristic AMD Ryzen 7 7840H
4 Cores 8
4 Threads 16
hybrid (big.LITTLE) Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
2.15 GHz
2x Kryo
A-Core 3.80 GHz (5.10 GHz)
8x Zen 4
1.60 GHz
2x Kryo
B-Core --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Qualcomm Snapdragon 820 Characteristic AMD Ryzen 7 7840H
Qualcomm AI engine AI hardware AMD Ryzen™ AI
Hexagon 680 AI specifications AMD dedicated AI XDNA Technology
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

Qualcomm Adreno 530 GPU AMD Radeon 780M
0.62 GHz GPU frequency 0.80 GHz
0.62 GHz GPU (Turbo) 2.70 GHz
5 GPU Generation 3
14 nm Technology 4 nm
0 Max. displays 4
-- Compute units 12
256 Shader 768
No Hardware Raytracing Yes
No Frame Generation AMD FSR
-- Max. GPU Memory 32 GB
11,1 DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Qualcomm Adreno 530 GPU AMD Radeon 780M
Decode Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
Decode Codec h264 Decode / Encode
Decode Codec VP9 Decode
Decode Codec VP8 Decode
No Codec AV1 Decode / Encode
No Codec AVC Decode
Decode Codec VC-1 Decode
Decode Codec JPEG Decode / Encode

Memory & PCIe

Up to 12 GB of memory in a maximum of 4 memory channels is supported by the Qualcomm Snapdragon 820, while the AMD Ryzen 7 7840H supports a maximum of 256 GB of memory with a maximum memory bandwidth of 120.0 GB/s enabled.

Qualcomm Snapdragon 820 Characteristic AMD Ryzen 7 7840H
LPDDR4-3733 Memory DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500
12 GB Max. Memory 256 GB
4 (Quad Channel) Memory channels 2 (Dual Channel)
14.9 GB/s Max. Bandwidth 120.0 GB/s
No ECC Yes
-- L2 Cache 8.00 MB
-- L3 Cache 16.00 MB
-- PCIe version 4.0
-- PCIe lanes 20
-- PCIe Bandwidth 39.4 GB/s

Thermal Management

The Qualcomm Snapdragon 820 has a TDP of --. The TDP of the AMD Ryzen 7 7840H is 54 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Qualcomm Snapdragon 820 Characteristic AMD Ryzen 7 7840H
-- TDP (PL1 / PBP) 54 W
-- TDP (PL2) --
-- TDP up 60 W
-- TDP down 35 W
-- Tjunction max. 100 °C

Technical details

The Qualcomm Snapdragon 820 has 0.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen 7 7840H is at 24.00 MB. The processor is manufactured in 4 nm.

Qualcomm Snapdragon 820 Characteristic AMD Ryzen 7 7840H
14 nm Technology 4 nm
Chiplet Chip design Monolithic
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
-- Socket FP8
None Virtualization AMD-V, SVM
No AES-NI Yes
Android Operating systems Windows 10, Windows 11, Linux
Q4/2015 Release date Q1/2023
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Qualcomm Snapdragon 820 to help other visitors make their purchasing decisions. The average rating is 4.3 stars (3 ratings). Rate now:
Here you can rate the AMD Ryzen 7 7840H to help other visitors make their purchasing decisions. The average rating is 4.7 stars (29 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Qualcomm Snapdragon 820 (17%)
AMD Ryzen 7 7840H (100%)
⌀ Multi core performance in 3 CPU benchmarks
Qualcomm Snapdragon 820 (6%)
AMD Ryzen 7 7840H (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
344 (19%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
1857 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
903 (8%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
11334 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
367 (15%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
2456 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
746 (6%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
12135 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
Qualcomm Adreno 530 @ 0.62 GHz
476 (11%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
AMD Radeon 780M @ 2.70 GHz
4201 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
1362 (5%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
28412 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
1757 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
15930 (100%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
624 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 3.80 GHz
6744 (100%)

AI performance (NPU)

The performance values of the processor's AI unit. The isolated NPU performance is given here, the total AI performance (NPU+CPU+iGPU) can be higher.

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
4C 4T @ 2.15 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 3.80 GHz
10 (100%)

Devices using this processor

Qualcomm Snapdragon 820 AMD Ryzen 7 7840H
Unknown Unknown

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