Ryzen 9 7840HX vs Ryzen 5 7400
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 656 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | AMD Dragon Range (Zen 4, Ryzen 7045) |
| Power efficiency | 8.14 | no data |
| Designer | AMD | AMD |
| Manufacturer | TSMC | no data |
| Architecture codename | Raphael (2023−2025) | Dragon Range-HX (Zen 4) (2023−2024) |
| Release date | 16 September 2025 (recently) | 17 January 2024 (1 year ago) |
Detailed specifications
Ryzen 5 7400 and Ryzen 9 7840HX 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) | 12 (Dodeca-Core) |
| Threads | 12 | 24 |
| Base clock speed | 3.3 GHz | 2.9 GHz |
| Boost clock speed | 4.3 GHz | 5.1 GHz |
| L1 cache | 64 KB (per core) | 768 KB |
| L2 cache | 1 MB (per core) | 12 MB |
| L3 cache | 16 MB (shared) | 64 MB |
| Chip lithography | 5 nm | 5 nm |
| Die size | 71 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 61 °C | no data |
| Number of transistors | 6,570 million | 9900 Million |
| 64 bit support | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 5 7400 and Ryzen 9 7840HX 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 | FL1 |
| Power consumption (TDP) | 65 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 7400 and Ryzen 9 7840HX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME |
| AES-NI | + | + |
| FMA | - | + |
| AVX | + | + |
| Precision Boost 2 | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 7400 and Ryzen 9 7840HX are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 5 7400 and Ryzen 9 7840HX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon Graphics | AMD Radeon 610M (400 - 2200 MHz) |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 7400 and Ryzen 9 7840HX.
| PCIe version | 5.0 | no data |
| PCI Express lanes | 24 | no data |
Pros & cons summary
| Integrated graphics card | 1.73 | 2.49 |
| Recency | 16 September 2025 | 17 January 2024 |
| Physical cores | 6 | 12 |
| Threads | 12 | 24 |
| Power consumption (TDP) | 65 Watt | 55 Watt |
Ryzen 5 7400 has an age advantage of 1 year.
Ryzen 9 7840HX, on the other hand, has 43.9% faster integrated GPU, 100% more physical cores and 100% more threads, and 18.2% lower power consumption.
We couldn't decide between AMD Ryzen 5 7400 and AMD Ryzen 9 7840HX. We've got no test results to judge.
Note that Ryzen 5 7400 is a desktop processor while Ryzen 9 7840HX 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.
