Valve Steam Deck (AMD Custom APU 0405) | AMD EPYC 7542 | |
CPU comparisonValve Steam Deck (AMD Custom APU 0405) or AMD EPYC 7542 - 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 Valve Steam Deck (AMD Custom APU 0405) has 4 cores with 8 threads and clocks with a maximum frequency of 3.50 GHz. Up to 16 GB of memory is supported in 4 memory channels. The Valve Steam Deck (AMD Custom APU 0405) was released in Q4/2021. The AMD EPYC 7542 has 32 cores with 64 threads and clocks with a maximum frequency of 3.40 GHz. The CPU supports up to GB of memory in 8 memory channels. The AMD EPYC 7542 was released in Q3/2019. |
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AMD Ryzen 5 (86) | Family | AMD EPYC (129) |
AMD Aerith (Steam Deck) (1) | CPU group | AMD EPYC 7002 (24) |
3 | Generation | 2 |
Aerith (Zen 2) | Architecture | Rome (Zen 2) |
Mobile | Segment | Desktop / Server |
-- | Predecessor | -- |
Valve Steam Deck (2023 Refresh) | Successor | -- |
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CPU Cores and Base FrequencyThe Valve Steam Deck (AMD Custom APU 0405) is a 4 core processor with a clock frequency of 2.40 GHz (3.50 GHz). The AMD EPYC 7542 has 32 CPU cores with a clock frequency of 2.90 GHz (3.40 GHz). |
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Valve Steam Deck (AMD Custom APU 0405) | Characteristic | AMD EPYC 7542 |
4 | Cores | 32 |
8 | Threads | 64 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | No |
2.40 GHz | Frequency | 2.90 GHz |
3.50 GHz | Turbo Frequency (1 Core) | 3.40 GHz |
2.80 GHz | Turbo Frequency (All Cores) | 3.20 GHz |
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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AMD Custom Radeon Graphics (Steam Deck) | GPU | no iGPU |
1.00 GHz | GPU frequency | -- |
1.60 GHz | GPU (Turbo) | -- |
-- | GPU Generation | -- |
7 nm | Technology | |
2 | Max. displays | |
8 | Compute units | -- |
512 | Shader | -- |
No | Hardware Raytracing | No |
No | Frame Generation | No |
8 GB | Max. GPU Memory | -- |
12 | DirectX Version | -- |
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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AMD Custom Radeon Graphics (Steam Deck) | GPU | no iGPU |
Decode / Encode | Codec h265 / HEVC (8 bit) | No |
Decode / Encode | Codec h265 / HEVC (10 bit) | No |
Decode / Encode | Codec h264 | No |
Decode / Encode | Codec VP9 | No |
Decode / Encode | Codec VP8 | No |
No | Codec AV1 | No |
Decode / Encode | Codec AVC | No |
Decode | Codec VC-1 | No |
Decode / Encode | Codec JPEG | No |
Memory & PCIeThe Valve Steam Deck (AMD Custom APU 0405) supports a maximum of 16 GB of memory in 4 memory channels. The AMD EPYC 7542 can connect up to GB of memory in 8 memory channels. |
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Valve Steam Deck (AMD Custom APU 0405) | Characteristic | AMD EPYC 7542 |
LPDDR5-5500 | Memory | DDR4-3200 |
16 GB | Max. Memory | |
4 (Quad Channel) | Memory channels | 8 (Octa Channel) |
88.0 GB/s | Max. Bandwidth | 51.2 GB/s |
No | ECC | Yes |
2.00 MB | L2 Cache | -- |
4.00 MB | L3 Cache | 128.00 MB |
3.0 | PCIe version | 4.0 |
8 | PCIe lanes | 128 |
7.9 GB/s | PCIe Bandwidth | 252.0 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Valve Steam Deck (AMD Custom APU 0405) has a TDP of 15 W, that of the AMD EPYC 7542 is 225 W. |
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Valve Steam Deck (AMD Custom APU 0405) | Characteristic | AMD EPYC 7542 |
15 W | TDP (PL1 / PBP) | 225 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
4 W | TDP down | -- |
100 °C | Tjunction max. | -- |
Technical detailsThe Valve Steam Deck (AMD Custom APU 0405) has a 6.00 MB cache, while the AMD EPYC 7542 cache has a total of 128.00 MB. |
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Valve Steam Deck (AMD Custom APU 0405) | Characteristic | AMD EPYC 7542 |
7 nm | Technology | 7 nm |
Monolithic | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
FF3 | Socket | SP3 |
AMD-V, SVM | Virtualization | AMD-V, SVM |
Yes | AES-NI | Yes |
SteamOS (Arch Linux) | Operating systems | Windows 10, Linux |
Q4/2021 | Release date | Q3/2019 |
-- | Release price | 6000 $ |
show more data | show more data | |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
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AMD EPYC 7542
32C 64T @ 3.40 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
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AMD EPYC 7542
32C 64T @ 3.20 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
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AMD EPYC 7542
32C 64T @ 3.40 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
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AMD EPYC 7542
32C 64T @ 3.20 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
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AMD EPYC 7542
32C 64T @ 3.40 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
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AMD EPYC 7542
32C 64T @ 3.40 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
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AMD EPYC 7542
32C 64T @ 3.40 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
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AMD EPYC 7542
32C 64T @ 3.20 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
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AMD EPYC 7542
32C 64T @ 3.40 GHz |
Valve Steam Deck (AMD Custom APU 0405)
AMD Custom Radeon Graphics (Steam Deck) @ 1.60 GHz |
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AMD EPYC 7542
@ 0.00 GHz |
Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
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AMD EPYC 7542
32C 64T @ 3.20 GHz |
Devices using this processor |
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Valve Steam Deck (AMD Custom APU 0405) | AMD EPYC 7542 |
Valve Steam Deck | Unknown |