Ryzen 9 7945HX3D vs A8-3870K
Aggregate performance score
Ryzen 9 7945HX3D outperforms A8-3870K by a whopping 2352% 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 | 2394 | 137 |
| 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 | 0.56 | 25.19 |
| Designer | AMD | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Llano (2011−2012) | Dragon Range-HX (Zen 4) (2023−2024) |
| Release date | 20 December 2011 (13 years ago) | 27 July 2023 (2 years ago) |
Detailed specifications
A8-3870K and Ryzen 9 7945HX3D 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 | 4 (Quad-Core) | 16 (Hexadeca-Core) |
| Threads | 4 | 32 |
| Base clock speed | 3 GHz | 2.3 GHz |
| Boost clock speed | 3 GHz | 5.4 GHz |
| L1 cache | 128 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 0 KB | 128 MB (shared) |
| Chip lithography | 32 nm | 5 nm |
| Die size | 228 mm2 | 2x 71 mm2 |
| Maximum core temperature | no data | 89 °C |
| Number of transistors | 1,178 million | 17,840 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | + | + |
Compatibility
Information on A8-3870K and Ryzen 9 7945HX3D 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 | FM1 | FL1 |
| Power consumption (TDP) | 100 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A8-3870K and Ryzen 9 7945HX3D. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A8-3870K and Ryzen 9 7945HX3D are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A8-3870K and Ryzen 9 7945HX3D. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5-5200 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon HD 6550D | AMD Radeon 610M (400 - 2200 MHz) |
Peripherals
Specifications and connection of peripherals supported by A8-3870K and Ryzen 9 7945HX3D.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 28 |
Synthetic benchmarks
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.
Pros & cons summary
| Performance score | 1.34 | 32.86 |
| Integrated graphics card | 0.90 | 2.49 |
| Recency | 20 December 2011 | 27 July 2023 |
| Physical cores | 4 | 16 |
| Threads | 4 | 32 |
| Chip lithography | 32 nm | 5 nm |
| Power consumption (TDP) | 100 Watt | 55 Watt |
Ryzen 9 7945HX3D has a 2352.2% higher aggregate performance score, 176.7% faster integrated GPU, an age advantage of 11 years, 300% more physical cores and 700% more threads, a 540% more advanced lithography process, and 81.8% lower power consumption.
The AMD Ryzen 9 7945HX3D is our recommended choice as it beats the AMD A8-3870K in performance tests.
Note that A8-3870K is a desktop processor while Ryzen 9 7945HX3D is a notebook one.
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