AMD EPYC 9354 | Valve Steam Deck (AMD Custom APU 0405) | |
CPU comparisonIn this CPU comparison, we compare the AMD EPYC 9354 and the Valve Steam Deck (AMD Custom APU 0405) and use benchmarks to check which processor is faster.
We compare the AMD EPYC 9354 32 core processor released in Q4/2022 with the Valve Steam Deck (AMD Custom APU 0405) which has 4 CPU cores and was introduced in Q4/2021. |
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AMD EPYC (129) | Family | AMD Ryzen 5 (86) |
AMD EPYC 9004 (21) | CPU group | AMD Aerith (Steam Deck) (1) |
4 | Generation | 3 |
Genoa / Genoa-X (Zen 4) | Architecture | Aerith (Zen 2) |
Desktop / Server | Segment | Mobile |
-- | Predecessor | -- |
-- | Successor | Valve Steam Deck (2023 Refresh) |
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CPU Cores and Base FrequencyThe AMD EPYC 9354 is a 32 core processor with a clock frequency of 3.25 GHz (3.80 GHz). The processor can compute 64 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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AMD EPYC 9354 | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
32 | Cores | 4 |
64 | Threads | 8 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | No |
3.25 GHz | Frequency | 2.40 GHz |
3.80 GHz | Turbo Frequency (1 Core) | 3.50 GHz |
3.75 GHz | Turbo Frequency (All Cores) | 2.80 GHz |
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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no iGPU | GPU | AMD Custom Radeon Graphics (Steam Deck) |
GPU frequency | 1.00 GHz | |
-- | GPU (Turbo) | 1.60 GHz |
-- | GPU Generation | -- |
Technology | 7 nm | |
Max. displays | 2 | |
-- | Compute units | 8 |
-- | Shader | 512 |
No | Hardware Raytracing | No |
No | Frame Generation | No |
-- | Max. GPU Memory | 8 GB |
-- | 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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no iGPU | GPU | AMD Custom Radeon Graphics (Steam Deck) |
No | Codec h265 / HEVC (8 bit) | Decode / Encode |
No | Codec h265 / HEVC (10 bit) | Decode / Encode |
No | Codec h264 | Decode / Encode |
No | Codec VP9 | Decode / Encode |
No | Codec VP8 | Decode / Encode |
No | Codec AV1 | No |
No | Codec AVC | Decode / Encode |
No | Codec VC-1 | Decode |
No | Codec JPEG | Decode / Encode |
Memory & PCIeUp to 6144 GB of memory in a maximum of 12 memory channels is supported by the AMD EPYC 9354, 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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AMD EPYC 9354 | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
DDR5-4800 | Memory | LPDDR5-5500 |
6144 GB | Max. Memory | 16 GB |
12 | Memory channels | 4 (Quad Channel) |
460.8 GB/s | Max. Bandwidth | 88.0 GB/s |
Yes | ECC | No |
32.00 MB | L2 Cache | 2.00 MB |
256.00 MB | L3 Cache | 4.00 MB |
5.0 | PCIe version | 3.0 |
128 | PCIe lanes | 8 |
504.1 GB/s | PCIe Bandwidth | 7.9 GB/s |
Thermal ManagementThe AMD EPYC 9354 has a TDP of 280 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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AMD EPYC 9354 | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
280 W | TDP (PL1 / PBP) | 15 W |
-- | TDP (PL2) | -- |
300 W | TDP up | -- |
240 W | TDP down | 4 W |
100 °C | Tjunction max. | 100 °C |
Technical detailsThe AMD EPYC 9354 has 288.00 MB cache and is manufactured in 5 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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AMD EPYC 9354 | Characteristic | Valve Steam Deck (AMD Custom APU 0405) |
5 nm | Technology | 7 nm |
Chiplet | Chip design | Monolithic |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
SP5 | Socket | FF3 |
AMD-V, SVM | Virtualization | AMD-V, SVM |
Yes | AES-NI | Yes |
Windows Server 2022, Linux, Windows 11 | Operating systems | SteamOS (Arch Linux) |
Q4/2022 | Release date | Q4/2021 |
3420 $ | Release price | -- |
show more data | show more data | |
AMD EPYC 9354
32C 64T @ 3.80 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
AMD EPYC 9354
32C 64T @ 3.80 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
AMD EPYC 9354
32C 64T @ 3.80 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
AMD EPYC 9354
32C 64T @ 3.75 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
AMD EPYC 9354
32C 64T @ 3.80 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
AMD EPYC 9354
32C 64T @ 3.75 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
AMD EPYC 9354
32C 64T @ 3.80 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz |
AMD EPYC 9354
32C 64T @ 3.75 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz |
AMD EPYC 9354
@ 0.00 GHz |
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Valve Steam Deck (AMD Custom APU 0405)
AMD Custom Radeon Graphics (Steam Deck) @ 1.60 GHz |
Devices using this processor |
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AMD EPYC 9354 | Valve Steam Deck (AMD Custom APU 0405) |
Unknown | Valve Steam Deck |