EPYC 7251 vs Ryzen 5 4500U
Aggregated performance score
EPYC 7251 outperforms Ryzen 5 4500U by 36% based on our aggregated benchmark results.
Primary details
Comparing Ryzen 5 4500U and EPYC 7251 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 915 | 724 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 7.39 |
| Market segment | Laptop | Server |
| Series | AMD Renoir (Ryzen 4000 APU) | AMD EPYC |
| Architecture codename | Renoir-U (Zen 2) | Naples (2017−2018) |
| Release date | 6 January 2020 (4 years ago) | 29 June 2017 (6 years ago) |
| Launch price (MSRP) | no data | $574 |
| Current price | $527 | $348 (0.6x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 5 4500U and EPYC 7251 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 | 6 (Hexa-Core) | 8 (Octa-Core) |
| Threads | 6 | 16 |
| Base clock speed | 2.3 GHz | 2.1 GHz |
| Boost clock speed | 4 GHz | 2.9 GHz |
| L1 cache | 128K (per core) | 96K (per core) |
| L2 cache | 512K (per core) | 512K (per core) |
| L3 cache | 11 MB (shared) | 32 MB (shared) |
| Chip lithography | 7 nm | 14 nm |
| Die size | 156 mm2 | 192 mm2 |
| Maximum core temperature | 105 °C | no data |
| Number of transistors | 9800 Million | 4,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | No | Yes |
Compatibility
Information on Ryzen 5 4500U and EPYC 7251 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 (Multiprocessor) |
| Socket | FP6 | TR4 |
| Power consumption (TDP) | 25 Watt | 120 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 4500U and EPYC 7251. You'll probably need this information if you require some particular technology.
| Instruction set extensions | DDR4-3200/LPDDR4-4266 RAM, PCIe 3, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, CPB, AES-NI, RDRAND, RDSEED, SHA, SME | no data |
| AES-NI | + | + |
| FMA | + | no data |
| AVX | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 4500U and EPYC 7251 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 5 4500U and EPYC 7251. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR4 Eight-channel |
| Maximum memory size | 64 GB | 2 TiB |
| Max memory channels | no data | 8 |
| Maximum memory bandwidth | 68.27 GB/s | 153.652 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon RX Vega 6 (Ryzen 4000/5000) | no data |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 4500U and EPYC 7251.
| PCIe version | 3.0 | 3.0 |
| PCI Express lanes | no data | 128 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
EPYC 7251 outperforms Ryzen 5 4500U by 36% based on our aggregated benchmark results.
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.
Benchmark coverage: 68%
EPYC 7251 outperforms Ryzen 5 4500U by 36% in Passmark.
Pros & cons summary
| Performance score | 7.08 | 9.66 |
| Recency | 6 January 2020 | 29 June 2017 |
| Physical cores | 6 | 8 |
| Threads | 6 | 16 |
| Chip lithography | 7 nm | 14 nm |
| Power consumption (TDP) | 25 Watt | 120 Watt |
The EPYC 7251 is our recommended choice as it beats the Ryzen 5 4500U in performance tests.
Be aware that Ryzen 5 4500U is a notebook processor while EPYC 7251 is a server/workstation one.
Should you still have questions on choice between Ryzen 5 4500U and EPYC 7251, ask them in Comments section, and we shall answer.
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