Ryzen 7 PRO 7840HS vs Ryzen 9 8945H
Aggregate performance score
Ryzen 9 8945H outperforms Ryzen 7 PRO 7840HS by a moderate 13% based on our aggregate benchmark results.
Primary details
Comparing Ryzen 9 8945H and Ryzen 7 PRO 7840HS processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 307 | 393 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD Hawk Point (Zen 4/4c, Ryzen 8040) | AMD Phoenix (Zen 4, Ryzen 7040) |
| Power efficiency | 40.04 | 45.47 |
| Architecture codename | Hawk Point-HS (Zen 4) (2023−2024) | Phoenix-HS (Zen 4) (2023) |
| Release date | 6 December 2023 (1 year ago) | 13 June 2023 (1 year ago) |
Detailed specifications
Ryzen 9 8945H and Ryzen 7 PRO 7840HS 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) | 8 (Octa-Core) |
| Threads | 16 | 16 |
| Base clock speed | 4 GHz | 3.8 GHz |
| Boost clock speed | 5.2 GHz | 5.1 GHz |
| L1 cache | 512 KB | 512 KB |
| L2 cache | 8 MB | 8 MB |
| L3 cache | 16 MB | 16 MB |
| Chip lithography | 4 nm | 4 nm |
| Die size | 178 mm2 | 178 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| 64 bit support | + | + |
Compatibility
Information on Ryzen 9 8945H and Ryzen 7 PRO 7840HS 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.
| Socket | FP7/FP7r2/FP8 | FP7/FP8 |
| Power consumption (TDP) | 45 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 8945H and Ryzen 7 PRO 7840HS. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Ryzen AI, 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 | no data |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 8945H and Ryzen 7 PRO 7840HS. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 780M ( - 2800 MHz) | AMD Radeon 780M ( - 2700 MHz) |
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.
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.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
Cinebench 15 64-bit single-core
Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.
Geekbench 5.5 Multi-Core
Blender(-)
Geekbench 5.5 Single-Core
7-Zip Single
7-Zip
WebXPRT 3
CrossMark Overall
WebXPRT 4 Overall
Blender v3.3 Classroom CPU(-)
Geekbench 6.3 Multi-Core
Geekbench 6.3 Single-Core
Pros & cons summary
| Performance score | 18.93 | 16.72 |
| Recency | 6 December 2023 | 13 June 2023 |
| Power consumption (TDP) | 45 Watt | 35 Watt |
Ryzen 9 8945H has a 13.2% higher aggregate performance score, and an age advantage of 5 months.
Ryzen 7 PRO 7840HS, on the other hand, has 28.6% lower power consumption.
The Ryzen 9 8945H is our recommended choice as it beats the Ryzen 7 PRO 7840HS in performance tests.
Should you still have questions on choice between Ryzen 9 8945H and Ryzen 7 PRO 7840HS, ask them in Comments section, and we shall answer.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
