Ryzen 9 3900 vs Ryzen 7 8700G
Aggregated performance score
Ryzen 7 8700G outperforms Ryzen 9 3900 by 3% based on our aggregated benchmark results.
Primary details
Comparing Ryzen 7 8700G and Ryzen 9 3900 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 241 | 248 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 54.93 | 35.78 |
| Market segment | Desktop processor | Desktop processor |
| Series | no data | AMD Matisse (Ryzen 3000 Desktop) |
| Architecture codename | Phoenix | Matisse (Zen 2) (2019−2020) |
| Release date | 8 January 2024 (less than a year ago) | 9 October 2019 (4 years ago) |
| Current price | $329 | $381 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Ryzen 7 8700G has 54% better value for money than Ryzen 9 3900.
Detailed specifications
Ryzen 7 8700G and Ryzen 9 3900 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) | 12 (Dodeca-Core) |
| Threads | 16 | 24 |
| Base clock speed | 4.2 GHz | 3.1 GHz |
| Boost clock speed | 5.1 GHz | 4.3 GHz |
| L1 cache | 64 KB (per core) | 768 KB |
| L2 cache | 1 MB (per core) | 6 MB |
| L3 cache | 16 MB (shared) | 64 MB |
| Chip lithography | 4 nm | 7 nm |
| Die size | 178 mm2 | no data |
| Number of transistors | 25,000 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
| Unlocked multiplier | Yes | Yes |
Compatibility
Information on Ryzen 7 8700G and Ryzen 9 3900 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 | no data |
| Socket | AM5 | AM4 (1331) |
| Power consumption (TDP) | 65 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 7 8700G and Ryzen 9 3900. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | 86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2 |
| AES-NI | + | + |
| AVX | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 7 8700G and Ryzen 9 3900 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 7 8700G and Ryzen 9 3900. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR4-3200 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 51.196 GB/s |
| ECC memory support | no data | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 780M | - |
Peripherals
Specifications and connection of peripherals supported by Ryzen 7 8700G and Ryzen 9 3900.
| PCIe version | 4.0 | no data |
| PCI Express lanes | 20 | no data |
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.
Ryzen 7 8700G outperforms Ryzen 9 3900 by 3% 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%
Ryzen 7 8700G outperforms Ryzen 9 3900 by 3% in Passmark.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
Benchmark coverage: 42%
Ryzen 7 8700G outperforms Ryzen 9 3900 by 63% in GeekBench 5 Single-Core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Benchmark coverage: 42%
Ryzen 7 8700G outperforms Ryzen 9 3900 by 48% in GeekBench 5 Multi-Core.
Pros & cons summary
| Performance score | 20.44 | 19.94 |
| Recency | 8 January 2024 | 9 October 2019 |
| Physical cores | 8 | 12 |
| Threads | 16 | 24 |
| Chip lithography | 4 nm | 7 nm |
Given the minimal performance differences, no clear winner can be declared between Ryzen 7 8700G and Ryzen 9 3900.
Should you still have questions on choice between Ryzen 7 8700G and Ryzen 9 3900, ask them in Comments section, and we shall answer.
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