Ryzen 7 7840U vs EPYC 4345P
Aggregate performance score
EPYC 4345P outperforms Ryzen 7 7840U by an impressive 51% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 262 | 506 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 60.51 | no data |
| Market segment | Server | Laptop |
| Series | no data | AMD Phoenix (Zen 4, Ryzen 7040) |
| Power efficiency | 34.77 | 53.36 |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Grado (2025) | Phoenix-U (Zen 4) (2023) |
| Release date | 13 May 2025 (recently) | May 2023 (2 years ago) |
| Launch price (MSRP) | $329 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 4345P and Ryzen 7 7840U 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 | 8 (Octa-Core) | 8 (Octa-Core) |
| Threads | 16 | 16 |
| Base clock speed | 3.8 GHz | 3.3 GHz |
| Boost clock speed | 5.5 GHz | 5.1 GHz |
| L1 cache | 80 KB (per core) | 64K (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 32 MB (shared) | 16 MB (shared) |
| Chip lithography | 4 nm | 4 nm |
| Die size | 70.6 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 8,315 million | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | + |
Compatibility
Information on EPYC 4345P and Ryzen 7 7840U 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 | AM5 | FP8 |
| Power consumption (TDP) | 65 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 4345P and Ryzen 7 7840U. 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 4345P and Ryzen 7 7840U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 4345P and Ryzen 7 7840U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5-5600 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon Graphics | AMD Radeon 780M ( - 2700 MHz) |
Peripherals
Specifications and connection of peripherals supported by EPYC 4345P and Ryzen 7 7840U.
| PCIe version | 5.0 | 4.0 |
| PCI Express lanes | 24 | 20 |
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.
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
| Performance score | 23.43 | 15.49 |
| Integrated graphics card | 1.92 | 17.54 |
| Power consumption (TDP) | 65 Watt | 28 Watt |
EPYC 4345P has a 51.3% higher aggregate performance score.
Ryzen 7 7840U, on the other hand, has 813.5% faster integrated GPU, and 132.1% lower power consumption.
The AMD EPYC 4345P is our recommended choice as it beats the AMD Ryzen 7 7840U in performance tests.
Be aware that EPYC 4345P is a server/workstation processor while Ryzen 7 7840U is a notebook one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
