Qualcomm Snapdragon 675 vs Qualcomm Snapdragon 821
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CPU comparison with benchmarks
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| Qualcomm Snapdragon 675 | Qualcomm Snapdragon 821 | |
CPU comparisonQualcomm Snapdragon 675 or Qualcomm Snapdragon 821 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The Qualcomm Snapdragon 675 has 8 cores with 8 threads and clocks with a maximum frequency of 2.00 GHz. Up to 8 GB of memory is supported in 2 memory channels. The Qualcomm Snapdragon 675 was released in Q1/2019. The Qualcomm Snapdragon 821 has 4 cores with 4 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 8 GB of memory in 2 memory channels. The Qualcomm Snapdragon 821 was released in Q3/2016. |
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| Qualcomm Snapdragon (104) | Family | Qualcomm Snapdragon (104) |
| Qualcomm Snapdragon 675/678 (2) | CPU group | Qualcomm Snapdragon 820 (3) |
| 7 | Generation | 3 |
| Kryo 460 | Architecture | Kryo |
| Mobile | Segment | Mobile |
| -- | Predecessor | -- |
| Qualcomm Snapdragon 678 | Successor | -- |
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CPU Cores and Base FrequencyThe Qualcomm Snapdragon 675 is a 8 core processor with a clock frequency of 2.00 GHz. The Qualcomm Snapdragon 821 has 4 CPU cores with a clock frequency of 2.40 GHz. |
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| Qualcomm Snapdragon 675 | Characteristic | Qualcomm Snapdragon 821 |
| 8 | Cores | 4 |
| 8 | Threads | 4 |
| hybrid (big.LITTLE) | Core architecture | hybrid (big.LITTLE) |
| No | Hyperthreading | No |
| No | Overclocking ? | No |
| 2.00 GHz 2x Kryo 460 Gold |
A-Core | 2.40 GHz 2x Kryo |
| 1.70 GHz 6x Kryo 460 Silver |
B-Core | 1.60 GHz 2x Kryo |
NPU AI performanceThe 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. |
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| Qualcomm Snapdragon 675 | Characteristic | Qualcomm Snapdragon 821 |
| Qualcomm AI engine | AI hardware | Qualcomm AI engine |
| Hexagon 685 @ 3 TOPS | AI specifications | Hexagon 680 |
| -- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs. |
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| Qualcomm Adreno 612 | GPU | Qualcomm Adreno 530 |
| 0.85 GHz | GPU frequency | 0.62 GHz |
| 0.85 GHz | GPU (Turbo) | 0.62 GHz |
| 6 | GPU Generation | 5 |
| 11 nm | Technology | 14 nm |
| 0 | Max. displays | 0 |
| -- | Compute units | -- |
| -- | Shader | 256 |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| -- | Max. GPU Memory | -- |
| 12.1 | DirectX Version | 11,1 |
Hardware codec supportA 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. |
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| Qualcomm Adreno 612 | GPU | Qualcomm Adreno 530 |
| Decode | Codec h265 / HEVC (8 bit) | Decode |
| Decode | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | Decode |
| Decode | Codec VP9 | Decode |
| Decode | Codec VP8 | Decode |
| No | Codec AV1 | No |
| Decode | Codec AVC | No |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode |
Memory & PCIeThe Qualcomm Snapdragon 675 supports a maximum of 8 GB of memory in 2 memory channels. The Qualcomm Snapdragon 821 can connect up to 8 GB of memory in 2 memory channels. |
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| Qualcomm Snapdragon 675 | Characteristic | Qualcomm Snapdragon 821 |
| LPDDR4X-3733 | 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 ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Qualcomm Snapdragon 675 has a TDP of --, that of the Qualcomm Snapdragon 821 is --. |
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| Qualcomm Snapdragon 675 | Characteristic | Qualcomm Snapdragon 821 |
| -- | TDP (PL1 / PBP) | -- |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe Qualcomm Snapdragon 675 has a 0.00 MB cache, while the Qualcomm Snapdragon 821 cache has a total of 0.00 MB. |
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| Qualcomm Snapdragon 675 | Characteristic | Qualcomm Snapdragon 821 |
| 11 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 |
| Q1/2019 | Release date | Q3/2016 |
| -- | Release price | -- |
| show more data | show more data | |
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8C 8T @ 2.00 GHz buy now on Amazon and save!
4C 4T @ 2.40 GHz buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 2 CPU benchmarks
⌀ Multi core performance in 3 CPU benchmarks
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.
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Qualcomm Snapdragon 675
8C 8T @ 2.00 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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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.
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Qualcomm Snapdragon 675
8C 8T @ 2.00 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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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.
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Qualcomm Snapdragon 675
8C 8T @ 2.00 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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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.
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Qualcomm Snapdragon 675
8C 8T @ 2.00 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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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.
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Qualcomm Snapdragon 675
8C 8T @ 2.00 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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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.
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Qualcomm Snapdragon 675
Qualcomm Adreno 612 @ 0.85 GHz |
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Qualcomm Snapdragon 821
Qualcomm Adreno 530 @ 0.62 GHz |
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AnTuTu 8 Benchmark
The AnTuTu 8 Benchmark measures the performance of a SoC. AnTuTu benchmarks the CPU, GPU, Memory as well as the UX (User Experience) by simulating browser and app usage. AnTuTu can benchmark any ARM CPU that runs under Android or iOS. Devices may not be directly compareable if the benchmark has been performed under different operating systems.
In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
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Qualcomm Snapdragon 675
8C 8T @ 2.00 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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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).
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).
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Qualcomm Snapdragon 675
8C 8T @ 2.00 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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Devices using this processor |
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| Qualcomm Snapdragon 675 | Qualcomm Snapdragon 821 |
| Unknown | Unknown |
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