Note: The information shown below is based on rumors and unoffical information. Technical details or benchmark results may be different in the final version of this processor. |
AMD EPYC 8434P | AMD EPYC 9255 | |
CPU comparisonAMD EPYC 8434P or AMD EPYC 9255 - 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 AMD EPYC 8434P has 48 cores with 96 threads and clocks with a maximum frequency of 3.10 GHz. Up to GB of memory is supported in 6 memory channels. The AMD EPYC 8434P was released in Q3/2023. The AMD EPYC 9255 has 24 cores with 48 threads and clocks with a maximum frequency of 3.30 GHz. The CPU supports up to 6144 GB of memory in 12 memory channels. The AMD EPYC 9255 was released in Q4/2024. |
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AMD EPYC (129) | Family | AMD EPYC (129) |
AMD EPYC 8004/9004 (15) | CPU group | AMD EPYC 9005 (21) |
4 | Generation | 5 |
Bergamo/Siena (Zen 4c) | Architecture | Turin (Zen 5 / Zen 5c) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | AMD EPYC 9254 |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 8434P has 48 CPU cores and can calculate 96 threads in parallel. The clock frequency of the AMD EPYC 8434P is 2.50 GHz (3.10 GHz) while the AMD EPYC 9255 has 24 CPU cores and 48 threads can calculate simultaneously. The clock frequency of the AMD EPYC 9255 is at 3.30 GHz. |
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AMD EPYC 8434P | Characteristic | AMD EPYC 9255 |
48 | Cores | 24 |
96 | Threads | 48 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | No |
2.50 GHz | Frequency | 3.30 GHz |
3.10 GHz | Turbo Frequency (1 Core) | -- |
3.10 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD EPYC 8434P can use up to GB of memory in 6 memory channels. The maximum memory bandwidth is 230.4 GB/s. The AMD EPYC 9255 supports up to 6144 GB of memory in 12 memory channels and achieves a memory bandwidth of up to 480.0 GB/s. |
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AMD EPYC 8434P | Characteristic | AMD EPYC 9255 |
DDR5-4800 | Memory | DDR5-6000 |
Max. Memory | 6144 GB | |
6 (Hexa Channel) | Memory channels | 12 |
230.4 GB/s | Max. Bandwidth | 480.0 GB/s |
Yes | ECC | Yes |
-- | L2 Cache | -- |
128.00 MB | L3 Cache | 96.00 MB |
5.0 | PCIe version | 5.0 |
96 | PCIe lanes | 128 |
378.0 GB/s | PCIe Bandwidth | 504.1 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 8434P is 200 W, while the AMD EPYC 9255 has a TDP of 200 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD EPYC 8434P | Characteristic | AMD EPYC 9255 |
200 W | TDP (PL1 / PBP) | 200 W |
-- | TDP (PL2) | -- |
225 W | TDP up | -- |
155 W | TDP down | -- |
-- | Tjunction max. | 100 °C |
Technical detailsThe AMD EPYC 8434P is manufactured in 5 nm and has 128.00 MB cache. The AMD EPYC 9255 is manufactured in 4 nm and has a 96.00 MB cache. |
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AMD EPYC 8434P | Characteristic | AMD EPYC 9255 |
5 nm | Technology | 4 nm |
Chiplet | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI | ISA extensions | SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI |
SP6 | Socket | SP5 |
AMD-V, SVM | Virtualization | AMD-V, SVM |
Yes | AES-NI | Yes |
Windows Server 2022, Linux, Windows 11 | Operating systems | Windows Server 2022, Linux, Windows 11 |
Q3/2023 | Release date | Q4/2024 |
2700 $ | Release price | -- |
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Devices using this processor |
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AMD EPYC 8434P | AMD EPYC 9255 |
Unknown | Unknown |