Ryzen 7 4750U vs Ryzen 9 3900X
Primary details
Comparing Ryzen 9 3900X and Ryzen 7 4750U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 269 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 20.92 | no data |
| Market segment | Desktop processor | Laptop |
| Series | AMD Ryzen 9 | no data |
| Power efficiency | 15.54 | no data |
| Architecture codename | Matisse (Zen 2) (2019−2020) | Renoir (2020−2023) |
| Release date | 7 July 2019 (5 years ago) | 7 May 2020 (4 years ago) |
| Launch price (MSRP) | $499 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 9 3900X and Ryzen 7 4750U 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) | 8 (Octa-Core) |
| Threads | 24 | 16 |
| Base clock speed | 3.8 GHz | 1.7 GHz |
| Boost clock speed | 4.6 GHz | 4.1 GHz |
| L1 cache | 768 KB | 64K (per core) |
| L2 cache | 6 MB | 512K (per core) |
| L3 cache | 64 MB | 8 MB (shared) |
| Chip lithography | 7 nm, 12 nm | 7 nm |
| Die size | no data | 156 mm2 |
| Maximum core temperature | 95 °C | no data |
| Number of transistors | 19,200 million | 9,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 9 3900X and Ryzen 7 4750U 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 (Uniprocessor) | 1 |
| Socket | AM4 | FP6 |
| Power consumption (TDP) | 105 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 3900X and Ryzen 7 4750U. 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 Ryzen 9 3900X and Ryzen 7 4750U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and Ryzen 7 4750U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR4-4266 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 51.196 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | - | AMD Radeon RX Vega 8 (Ryzen 2000/3000) |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 3900X and Ryzen 7 4750U.
| PCIe version | no data | 3.0 |
Pros & cons summary
| Recency | 7 July 2019 | 7 May 2020 |
| Physical cores | 12 | 8 |
| Threads | 24 | 16 |
| Power consumption (TDP) | 105 Watt | 15 Watt |
Ryzen 9 3900X has 50% more physical cores and 50% more threads.
Ryzen 7 4750U, on the other hand, has an age advantage of 10 months, and 600% lower power consumption.
We couldn't decide between Ryzen 9 3900X and Ryzen 7 4750U. We've got no test results to judge.
Note that Ryzen 9 3900X is a desktop processor while Ryzen 7 4750U is a notebook one.
Should you still have questions on choice between Ryzen 9 3900X and Ryzen 7 4750U, ask them in Comments section, and we shall answer.
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