Qualcomm Snapdragon 8cx | Valve Steam Deck (AMD Custom APU 0405) | |
CPU comparisonIn this CPU comparison, we compare the Qualcomm Snapdragon 8cx and the Valve Steam Deck (AMD Custom APU 0405) and use benchmarks to check which processor is faster.
We compare the Qualcomm Snapdragon 8cx 8 core processor released in Q4/2018 with the Valve Steam Deck (AMD Custom APU 0405) which has 4 CPU cores and was introduced in Q4/2021. |
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Qualcomm Snapdragon (104) | Family | AMD Ryzen 5 (86) |
Qualcomm Snapdragon 8cx (2) | CPU group | AMD Aerith (Steam Deck) (1) |
2 | Generation | 3 |
Kryo 495 | Architecture | Aerith (Zen 2) |
Mobile | Segment | Mobile |
-- | Predecessor | -- |
-- | Successor | Valve Steam Deck (2023 Refresh) |
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CPU Cores and Base FrequencyThe Qualcomm Snapdragon 8cx is a 8 core processor with a clock frequency of 2.84 GHz. The processor can compute 8 threads at the same time. The Valve Steam Deck (AMD Custom APU 0405) clocks with 2.40 GHz (3.50 GHz), has 4 CPU cores and can calculate 8 threads in parallel. |
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Qualcomm Snapdragon 8cx | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
8 | Cores | 4 |
8 | Threads | 8 |
hybrid (big.LITTLE) | Core architecture | normal |
No | Hyperthreading | Yes |
No | Overclocking ? | No |
2.84 GHz 4x Kryo 495 Gold |
A-Core | 2.40 GHz (3.50 GHz) |
1.80 GHz 4x Kryo 495 Silver |
B-Core | -- |
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 8cx | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
Qualcomm AI engine | AI hardware | -- |
Hexagon 685 @ 3 TOPS | AI specifications | -- |
-- | 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. |
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Qualcomm Adreno 680 | GPU | AMD Custom Radeon Graphics (Steam Deck) |
0.25 GHz | GPU frequency | 1.00 GHz |
0.59 GHz | GPU (Turbo) | 1.60 GHz |
5 | GPU Generation | -- |
7 nm | Technology | 7 nm |
2 | Max. displays | 2 |
8 | Compute units | 8 |
768 | Shader | 512 |
No | Hardware Raytracing | No |
No | Frame Generation | No |
4 GB | Max. GPU Memory | 8 GB |
12.0 | DirectX Version | 12 |
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 680 | GPU | AMD Custom Radeon Graphics (Steam Deck) |
Decode / Encode | Codec h265 / HEVC (8 bit) | Decode / Encode |
Decode / Encode | Codec h265 / HEVC (10 bit) | Decode / Encode |
Decode / Encode | Codec h264 | Decode / Encode |
Decode | Codec VP9 | Decode / Encode |
Decode / Encode | Codec VP8 | Decode / Encode |
No | Codec AV1 | No |
Decode | Codec AVC | Decode / Encode |
Decode | Codec VC-1 | Decode |
Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeUp to 16 GB of memory in a maximum of 8 memory channels is supported by the Qualcomm Snapdragon 8cx, while the Valve Steam Deck (AMD Custom APU 0405) supports a maximum of 16 GB of memory with a maximum memory bandwidth of 88.0 GB/s enabled. |
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Qualcomm Snapdragon 8cx | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
LPDDR4X-4266 | Memory | LPDDR5-5500 |
16 GB | Max. Memory | 16 GB |
8 (Octa Channel) | Memory channels | 4 (Quad Channel) |
68.2 GB/s | Max. Bandwidth | 88.0 GB/s |
No | ECC | No |
-- | L2 Cache | 2.00 MB |
2.00 MB | L3 Cache | 4.00 MB |
-- | PCIe version | 3.0 |
-- | PCIe lanes | 8 |
-- | PCIe Bandwidth | 7.9 GB/s |
Thermal ManagementThe Qualcomm Snapdragon 8cx has a TDP of 7 W. The TDP of the Valve Steam Deck (AMD Custom APU 0405) is 15 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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Qualcomm Snapdragon 8cx | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
7 W | TDP (PL1 / PBP) | 15 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | 4 W |
-- | Tjunction max. | 100 °C |
Technical detailsThe Qualcomm Snapdragon 8cx has 2.00 MB cache and is manufactured in 7 nm. The cache of Valve Steam Deck (AMD Custom APU 0405) is at 6.00 MB. The processor is manufactured in 7 nm. |
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Qualcomm Snapdragon 8cx | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
7 nm | Technology | 7 nm |
Chiplet | Chip design | Monolithic |
Armv8-A (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
-- | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
-- | Socket | FF3 |
None | Virtualization | AMD-V, SVM |
No | AES-NI | Yes |
Android, Windows 10 (ARM) | Operating systems | SteamOS (Arch Linux) |
Q4/2018 | Release date | Q4/2021 |
-- | Release price | -- |
show more data | show more data | |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
Qualcomm Snapdragon 8cx
Qualcomm Adreno 680 @ 0.59 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
AMD Custom Radeon Graphics (Steam Deck) @ 1.60 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
Qualcomm Snapdragon 8cx
8C 8T @ 2.84 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.40 GHz |
Devices using this processor |
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Qualcomm Snapdragon 8cx | Valve Steam Deck (AMD Custom APU 0405) |
Lenovo Flex 5G Lenovo Yoga C 5G Samsung Galaxy Book S |
Valve Steam Deck |