EPYC 7663P vs EPYC 8434P
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 107 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 14.43 | no data |
| Market segment | Server | Server |
| Power efficiency | 8.01 | no data |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Siena (2023−2024) | Milan (2021−2023) |
| Release date | 18 September 2023 (2 years ago) | 5 September 2023 (2 years ago) |
| Launch price (MSRP) | $2,700 | $3,139 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 8434P and EPYC 7663P 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 | 48 (Octatetraconta-Core) | 56 (Hexapentaconta-Core) |
| Threads | 96 | 112 |
| Base clock speed | 2.5 GHz | 2 GHz |
| Boost clock speed | 3.1 GHz | 3.5 GHz |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 512 KB (per core) |
| L3 cache | 128 MB (shared) | 256 MB (shared) |
| Chip lithography | 5 nm | 7 nm |
| Die size | 4x 73 mm2 | 8x 81 mm2 |
| Maximum case temperature (TCase) | 75 °C | no data |
| Number of transistors | 35,500 million | 33,200 million |
| 64 bit support | + | - |
Compatibility
Information on EPYC 8434P and EPYC 7663P 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 | 1 |
| Socket | SP6 | SP3 |
| Power consumption (TDP) | 200 Watt | 240 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 8434P and EPYC 7663P. 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 8434P and EPYC 7663P are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 8434P and EPYC 7663P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR4 |
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 8434P and EPYC 7663P.
| PCIe version | 5.0 | 4.0 |
| PCI Express lanes | 96 | 128 |
Synthetic benchmarks
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Physical cores | 48 | 56 |
| Threads | 96 | 112 |
| Chip lithography | 5 nm | 7 nm |
| Power consumption (TDP) | 200 Watt | 240 Watt |
EPYC 8434P has a 40% more advanced lithography process, and 20% lower power consumption.
EPYC 7663P, on the other hand, has 17% more physical cores and 17% more threads.
We couldn't decide between AMD EPYC 8434P and AMD EPYC 7663P. We've got no test results to judge.
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