Qualcomm Snapdragon 653 vs Qualcomm Snapdragon 821

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CPU comparison with benchmarks


Qualcomm Snapdragon 653 CPU1 vs CPU2 Qualcomm Snapdragon 821
Qualcomm Snapdragon 653 Qualcomm Snapdragon 821

CPU comparison

In this CPU comparison, we compare the Qualcomm Snapdragon 653 and the Qualcomm Snapdragon 821 and use benchmarks to check which processor is faster.

We compare the Qualcomm Snapdragon 653 8 core processor released in Q4/2016 with the Qualcomm Snapdragon 821 which has 4 CPU cores and was introduced in Q3/2016.
Qualcomm Snapdragon (102) Family Qualcomm Snapdragon (102)
Qualcomm Snapdragon 650 (3) CPU group Qualcomm Snapdragon 820 (3)
4 Generation 3
Cortex-A72 / Cortex-A53 Architecture Kryo
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Qualcomm Snapdragon 653 is a 8 core processor with a clock frequency of 1.95 GHz. The processor can compute 8 threads at the same time. The Qualcomm Snapdragon 821 clocks with 2.40 GHz, has 4 CPU cores and can calculate 4 threads in parallel.

Qualcomm Snapdragon 653 Characteristic Qualcomm Snapdragon 821
8 Cores 4
8 Threads 4
hybrid (big.LITTLE) Core architecture hybrid (big.LITTLE)
No Hyperthreading No
No Overclocking ? No
1.95 GHz
4x Cortex-A72
A-Core 2.40 GHz
2x Kryo
1.44 GHz
4x Cortex-A53
B-Core 1.60 GHz
2x Kryo

Artificial Intelligence and Machine Learning

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. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Qualcomm Snapdragon 653 Characteristic Qualcomm Snapdragon 821
Qualcomm AI engine AI hardware Qualcomm AI engine
Hexagon AI specifications Hexagon 680

Internal Graphics

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 510 GPU Qualcomm Adreno 530
0.60 GHz GPU frequency 0.62 GHz
0.60 GHz GPU (Turbo) 0.62 GHz
5 GPU Generation 5
14 nm Technology 14 nm
0 Max. displays 0
-- Compute units --
128 Shader 256
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
11 DirectX Version 11,1

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

Memory & PCIe

Up to 8 GB of memory in a maximum of 2 memory channels is supported by the Qualcomm Snapdragon 653, while the Qualcomm Snapdragon 821 supports a maximum of 8 GB of memory with a maximum memory bandwidth of 14.9 GB/s enabled.

Qualcomm Snapdragon 653 Characteristic Qualcomm Snapdragon 821
LPDDR3-1866 Memory LPDDR4-3733
8 GB Max. Memory 8 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
14.9 GB/s Max. Bandwidth 14.9 GB/s
No ECC No
-- L2 Cache --
-- L3 Cache --
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The Qualcomm Snapdragon 653 has a TDP of --. The TDP of the Qualcomm Snapdragon 821 is --. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Qualcomm Snapdragon 653 Characteristic Qualcomm Snapdragon 821
-- TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Qualcomm Snapdragon 653 has 0.00 MB cache and is manufactured in 28 nm. The cache of Qualcomm Snapdragon 821 is at 0.00 MB. The processor is manufactured in 14 nm.

Qualcomm Snapdragon 653 Characteristic Qualcomm Snapdragon 821
28 nm Technology 14 nm
Chiplet Chip design Chiplet
Armv8-A (64 bit) Instruction set (ISA) Armv8-A (64 bit)
-- ISA extensions --
-- Socket --
None Virtualization None
No AES-NI No
Android Operating systems Android
Q4/2016 Release date Q3/2016
-- Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Qualcomm Snapdragon 653 (80%)
Qualcomm Snapdragon 821 (100%)
⌀ Multi core performance in 2 CPU benchmarks
Qualcomm Snapdragon 653 (100%)
Qualcomm Snapdragon 821 (86%)

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 653 Qualcomm Snapdragon 653
8C 8T @ 1.95 GHz
287 (84%)
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
341 (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 653 Qualcomm Snapdragon 653
8C 8T @ 1.95 GHz
1026 (100%)
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
864 (84%)

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 653 Qualcomm Snapdragon 653
8C 8T @ 1.95 GHz
279 (75%)
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
370 (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 653 Qualcomm Snapdragon 653
8C 8T @ 1.95 GHz
866 (100%)
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
752 (87%)

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 653 Qualcomm Snapdragon 653
Qualcomm Adreno 510 @ 0.60 GHz
154 (32%)
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
Qualcomm Adreno 530 @ 0.62 GHz
476 (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 653 Qualcomm Snapdragon 653
8C 8T @ 1.95 GHz
0 (0%)
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
1594 (100%)

Devices using this processor

Qualcomm Snapdragon 653 Qualcomm Snapdragon 821
Unknown Unknown

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