EPYC 9456 vs EPYC Embedded 8434P
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Siena (2023−2024) | Venice (2004−2026) |
| Release date | 1 October 2024 (1 year ago) | 23 July 2026 (less than a year ago) |
| Launch price (MSRP) | no data | $5,252 |
Detailed specifications
Basic parameters of EPYC Embedded 8434P and EPYC 9456: number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 48 (Octatetraconta-Core) | 48 (Octatetraconta-Core) |
| Threads | 96 | 96 |
| Base clock speed | 2.5 GHz | 3.2 GHz |
| Boost clock speed | 3.1 GHz | 3.7 GHz |
| L1 cache | 64 KB (per core) | 80 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 128 MB (shared) | 256 MB (shared) |
| Chip lithography | 5 nm | 2 nm |
| Die size | 4x 73 mm2 | 4x 165 mm2 |
| Maximum case temperature (TCase) | 75 °C | no data |
| Number of transistors | 35,500 million | 101,500 million |
| 64 bit support | + | + |
Compatibility
Information on EPYC Embedded 8434P and EPYC 9456 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 2 |
| Socket | SP6 | SP8 |
| Power consumption (TDP) | 200 Watt | 265 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC Embedded 8434P and EPYC 9456. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC Embedded 8434P and EPYC 9456 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC Embedded 8434P and EPYC 9456. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by EPYC Embedded 8434P and EPYC 9456.
| PCIe version | 5.0 | 6.0 |
| PCI Express lanes | 96 | 128 |
Pros & cons summary
| Recency | 1 October 2024 | 23 July 2026 |
| Chip lithography | 5 nm | 2 nm |
| Power consumption (TDP) | 200 Watt | 265 Watt |
EPYC Embedded 8434P has 33% lower power consumption.
EPYC 9456, on the other hand, has an age advantage of 1 year, and a 150% more advanced lithography process.
We couldn't decide between AMD EPYC Embedded 8434P and AMD EPYC 9456. We've got no test results to judge.
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