Qualcomm Snapdragon 845 | Qualcomm Snapdragon 821 | |
CPU comparisonIn this CPU comparison, we compare the Qualcomm Snapdragon 845 and the Qualcomm Snapdragon 821 and use benchmarks to check which processor is faster.
We compare the Qualcomm Snapdragon 845 8 core processor released in Q1/2018 with the Qualcomm Snapdragon 821 which has 4 CPU cores and was introduced in Q3/2016. |
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Qualcomm Snapdragon (102) | Family | Qualcomm Snapdragon (102) |
Qualcomm Snapdragon 845/850 (2) | CPU group | Qualcomm Snapdragon 820 (3) |
5 | Generation | 3 |
Kryo 385 | Architecture | Kryo |
Mobile | Segment | Mobile |
Qualcomm Snapdragon 835 | Predecessor | -- |
Qualcomm Snapdragon 855 | Successor | -- |
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CPU Cores and Base FrequencyThe Qualcomm Snapdragon 845 is a 8 core processor with a clock frequency of 2.80 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. |
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Qualcomm Snapdragon 845 | Characteristic | Qualcomm Snapdragon 821 |
8 | Cores | 4 |
8 | Threads | 4 |
hybrid (big.LITTLE) | Core architecture | hybrid (big.LITTLE) |
No | Hyperthreading | No |
No | Overclocking ? | No |
2.80 GHz 4x Kryo 385 Gold |
A-Core | 2.40 GHz 2x Kryo |
1.80 GHz 4x Kryo 385 Silver |
B-Core | 1.60 GHz 2x Kryo |
Artificial Intelligence and Machine LearningProcessors 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. |
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Qualcomm Snapdragon 845 | Characteristic | Qualcomm Snapdragon 821 |
-- | AI hardware | Qualcomm AI engine |
-- | AI specifications | Hexagon 680 |
Internal GraphicsGraphics (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. |
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Qualcomm Adreno 630 | GPU | Qualcomm Adreno 530 |
0.70 GHz | GPU frequency | 0.62 GHz |
-- | GPU (Turbo) | 0.62 GHz |
4 | GPU Generation | 5 |
10 nm | Technology | 14 nm |
2 | Max. displays | 0 |
-- | Compute units | -- |
256 | Shader | 256 |
No | Hardware Raytracing | No |
No | Frame Generation | No |
8 GB | Max. GPU Memory | -- |
11 | 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 630 | 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 & PCIeUp to 10 GB of memory in a maximum of 4 memory channels is supported by the Qualcomm Snapdragon 845, while the Qualcomm Snapdragon 821 supports a maximum of 8 GB of memory with a maximum memory bandwidth of 14.9 GB/s enabled. |
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Qualcomm Snapdragon 845 | Characteristic | Qualcomm Snapdragon 821 |
LPDDR4X-3733 | Memory | LPDDR4-3733 |
10 GB | Max. Memory | 8 GB |
4 (Quad Channel) | Memory channels | 2 (Dual Channel) |
52.0 GB/s | Max. Bandwidth | 14.9 GB/s |
No | ECC | No |
1.50 MB | L2 Cache | -- |
2.00 MB | L3 Cache | -- |
-- | PCIe version | -- |
-- | PCIe lanes | -- |
-- | PCIe Bandwidth | -- |
Thermal ManagementThe Qualcomm Snapdragon 845 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. |
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Qualcomm Snapdragon 845 | Characteristic | Qualcomm Snapdragon 821 |
-- | TDP (PL1 / PBP) | -- |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe Qualcomm Snapdragon 845 has 3.50 MB cache and is manufactured in 10 nm. The cache of Qualcomm Snapdragon 821 is at 0.00 MB. The processor is manufactured in 14 nm. |
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Qualcomm Snapdragon 845 | Characteristic | Qualcomm Snapdragon 821 |
10 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 |
Q1/2018 | Release date | Q3/2016 |
-- | Release price | -- |
show more data | show more data | |
Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
Qualcomm Snapdragon 845
Qualcomm Adreno 630 @ 0.70 GHz |
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Qualcomm Snapdragon 821
Qualcomm Adreno 530 @ 0.62 GHz |
Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
Qualcomm Snapdragon 845
8C 8T @ 2.80 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
Devices using this processor |
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Qualcomm Snapdragon 845 | Qualcomm Snapdragon 821 |
OnePlus 6 OnePlus 6T Vivo NEX S Asus Zenfone 5z Razer Phone 2 Asus ROG Phone Sony Xperia XZ2 |
Unknown |