Ryzen 5 8540U vs Ryzen 9 7900X
Aggregate performance score
Ryzen 9 7900X outperforms Ryzen 5 8540U by a whopping 180% 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 | 165 | 790 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Power efficiency | 7.28 | 15.77 |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Raphael (Zen4) (2022−2023) | Hawk Point-U (Zen 4 + Zen 4c) (2023−2025) |
| Release date | 27 September 2022 (2 years ago) | 6 December 2023 (1 year ago) |
Detailed specifications
Ryzen 9 7900X and Ryzen 5 8540U 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 | 12 (Dodeca-Core) | 6 (Hexa-Core) |
| Threads | 24 | 12 |
| Base clock speed | 4.7 GHz | 3.2 GHz |
| Boost clock speed | 5.6 GHz | 4.9 GHz |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 64 MB (shared) | 16 MB (shared) |
| Chip lithography | 5 nm | 4 nm |
| Die size | 2x 70 (CCD) mm2 + 122 (I/O) mm2 | 137 mm2 |
| Maximum core temperature | 95 °C | 100 °C |
| Maximum case temperature (TCase) | 47 °C | no data |
| Number of transistors | CCD: 6,5 Mrd + IOD: 3,4 Mrd Million | 20,900 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 9 7900X and Ryzen 5 8540U 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 | FP7 |
| Power consumption (TDP) | 170 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 7900X and Ryzen 5 8540U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 5 nm (CCD), 6 nm (I/O) nm, 0.650 - 1.475V | AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3 |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 7900X and Ryzen 5 8540U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7900X and Ryzen 5 8540U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-5200 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon Graphics (Ryzen 7000) | AMD Radeon 740M ( - 2800 MHz) |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 7900X and Ryzen 5 8540U.
| PCIe version | 5.0 | 4.0 |
| PCI Express lanes | 24 | 14 |
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.
Geekbench 5.5 Multi-Core
7-Zip Single
7-Zip
WebXPRT 4 Overall
Blender v3.3 Classroom CPU(-)
Geekbench 6.4 Multi-Core
Geekbench 6.4 Single-Core
Pros & cons summary
| Performance score | 31.98 | 11.42 |
| Integrated graphics card | 4.02 | 7.48 |
| Recency | 27 September 2022 | 6 December 2023 |
| Physical cores | 12 | 6 |
| Threads | 24 | 12 |
| Chip lithography | 5 nm | 4 nm |
| Power consumption (TDP) | 170 Watt | 28 Watt |
Ryzen 9 7900X has a 180% higher aggregate performance score, and 100% more physical cores and 100% more threads.
Ryzen 5 8540U, on the other hand, has 86.1% faster integrated GPU, an age advantage of 1 year, a 25% more advanced lithography process, and 507.1% lower power consumption.
The AMD Ryzen 9 7900X is our recommended choice as it beats the AMD Ryzen 5 8540U in performance tests.
Note that Ryzen 9 7900X is a desktop processor while Ryzen 5 8540U 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.
