EPYC 8434PN vs EPYC 9634
Primary details
Comparing EPYC 9634 and EPYC 8434PN processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 10 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.00 | no data |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Power efficiency | 22.18 | no data |
| Architecture codename | Genoa (2022−2023) | Siena (2023−2024) |
| Release date | 10 November 2022 (2 years ago) | 18 September 2023 (1 year ago) |
| Launch price (MSRP) | $10,304 | $3,150 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC 9634 and EPYC 8434PN basic parameters such as 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 | 84 | 48 (Octatetraconta-Core) |
| Threads | 168 | 96 |
| Base clock speed | 2.25 GHz | 2 GHz |
| Boost clock speed | 3.7 GHz | 3 GHz |
| Multiplier | 22.5 | no data |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 384 MB (shared) | 128 MB (shared) |
| Chip lithography | 5 nm, 6 nm | 5 nm |
| Die size | 12x 72 mm2 | 4x 73 mm2 |
| Maximum case temperature (TCase) | no data | 85 °C |
| Number of transistors | 78,840 million | 35,500 million |
| 64 bit support | + | + |
Compatibility
Information on EPYC 9634 and EPYC 8434PN 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 | 2 | 1 |
| Socket | SP5 | SP6 |
| Power consumption (TDP) | 290 Watt | 155 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 9634 and EPYC 8434PN. 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 9634 and EPYC 8434PN are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 9634 and EPYC 8434PN. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-4800 | DDR5 |
| Maximum memory size | 6 TiB | no data |
| Maximum memory bandwidth | 460.8 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by EPYC 9634 and EPYC 8434PN.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 128 | 96 |
Pros & cons summary
| Recency | 10 November 2022 | 18 September 2023 |
| Physical cores | 84 | 48 |
| Threads | 168 | 96 |
| Power consumption (TDP) | 290 Watt | 155 Watt |
EPYC 9634 has 75% more physical cores and 75% more threads.
EPYC 8434PN, on the other hand, has an age advantage of 10 months, and 87.1% lower power consumption.
We couldn't decide between EPYC 9634 and EPYC 8434PN. We've got no test results to judge.
Should you still have questions on choice between EPYC 9634 and EPYC 8434PN, ask them in Comments section, and we shall answer.
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