Ryzen 3 7440U vs Ryzen 5 7645HX
Primary details
Comparing Ryzen 5 7645HX and Ryzen 3 7440U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 328 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | no data | AMD Phoenix (Zen 4, Ryzen 7040) |
| Architecture codename | Dragon Range (Zen4) | Phoenix-U (Zen 4 + Zen 4c) |
| Release date | 4 January 2023 (1 year ago) | 3 May 2023 (1 year ago) |
Detailed specifications
Ryzen 5 7645HX and Ryzen 3 7440U 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) | 4 (Quad-Core) |
| Threads | 12 | 8 |
| Base clock speed | 4 GHz | 3 GHz |
| Boost clock speed | 5 GHz | 4.7 GHz |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 32 MB (shared) | 8 MB (shared) |
| Chip lithography | 5 nm | 4 nm |
| Die size | 71 mm2 | 137 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | 6570 Million | 20,900 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | No | No |
Compatibility
Information on Ryzen 5 7645HX and Ryzen 3 7440U 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 | FL1 | FP7 |
| Power consumption (TDP) | 45 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 7645HX and Ryzen 3 7440U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | DDR5-5600/LPDDR5x-7500 RAM, PCIe 4, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3 |
| AES-NI | + | + |
| AVX | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 7645HX and Ryzen 3 7440U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 5 7645HX and Ryzen 3 7440U. 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 Compare | AMD Radeon 610M | AMD Radeon 740M |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 7645HX and Ryzen 3 7440U.
| PCIe version | 5.0 | 4.0 |
| PCI Express lanes | 28 | 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.
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 5 7645HX outperforms Ryzen 3 7440U by 102% in Passmark.
Pros & cons summary
| Integrated graphics card | 2.85 | 9.03 |
| Recency | 4 January 2023 | 3 May 2023 |
| Physical cores | 6 | 4 |
| Threads | 12 | 8 |
| Chip lithography | 5 nm | 4 nm |
| Power consumption (TDP) | 45 Watt | 28 Watt |
We couldn't decide between Ryzen 5 7645HX and Ryzen 3 7440U. We've got no test results to judge.
Should you still have questions on choice between Ryzen 5 7645HX and Ryzen 3 7440U, ask them in Comments section, and we shall answer.
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