Follow us
Share link
Submit benchmark
AMD Ryzen 9 8945HS vs AMD Ryzen 7 7840HS
Last updated:
CPU comparison with benchmarks
|
 |
|
| AMD Ryzen 9 8945HS | AMD Ryzen 7 7840HS | |
CPU comparisonAMD Ryzen 9 8945HS or AMD Ryzen 7 7840HS - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The AMD Ryzen 9 8945HS has 8 cores with 16 threads and clocks with a maximum frequency of 5.20 GHz. Up to 256 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 8945HS was released in Q1/2024. The AMD Ryzen 7 7840HS has 8 cores with 16 threads and clocks with a maximum frequency of 5.10 GHz. The CPU supports up to 256 GB of memory in 2 memory channels. The AMD Ryzen 7 7840HS was released in Q1/2023. |
||
| AMD Ryzen 9 (47) | Family | AMD Ryzen 7 (74) |
| AMD Ryzen 8040 (21) | CPU group | AMD Ryzen 7040 (21) |
| 7 | Generation | 6 |
| Hawk Point (Zen 4) | Architecture | Phoenix (Zen 4) |
| Notebook | Segment | Notebook |
| AMD Ryzen 9 7940HS | Predecessor | -- |
| AMD Ryzen AI 9 365 | Successor | AMD Ryzen 7 8840HS |
|
|
||
CPU Cores and Base FrequencyThe AMD Ryzen 9 8945HS has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD Ryzen 9 8945HS is 4.00 GHz (5.20 GHz) while the AMD Ryzen 7 7840HS has 8 CPU cores and 16 threads can calculate simultaneously. The clock frequency of the AMD Ryzen 7 7840HS is at 3.80 GHz (5.10 GHz). |
||
| AMD Ryzen 9 8945HS | Characteristic | AMD Ryzen 7 7840HS |
| 8 | Cores | 8 |
| 16 | Threads | 16 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 4.00 GHz | Frequency | 3.80 GHz |
| 5.20 GHz | Turbo Frequency (1 Core) | 5.10 GHz |
| -- | Turbo Frequency (All Cores) | 4.25 GHz |
NPU AI performanceThe performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. |
||
| AMD Ryzen 9 8945HS | Characteristic | AMD Ryzen 7 7840HS |
| AMD Ryzen™ AI | AI hardware | AMD Ryzen™ AI |
| AMD Ryzen™ AI (XDNA) @ 16 TOPS | AI specifications | AMD dedicated AI XDNA Technology |
| -- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The AMD Ryzen 9 8945HS or AMD Ryzen 7 7840HS has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
||
| AMD Radeon 780M | GPU | AMD Radeon 780M |
| 0.80 GHz | GPU frequency | 0.80 GHz |
| 2.80 GHz | GPU (Turbo) | 2.70 GHz |
| 3 | GPU Generation | 3 |
| 4 nm | Technology | 4 nm |
| 4 | Max. displays | 4 |
| 12 | Compute units | 12 |
| 768 | Shader | 768 |
| Yes | Hardware Raytracing | Yes |
| AMD FSR | Frame Generation | AMD FSR |
| 32 GB | Max. GPU Memory | 32 GB |
| 12 | DirectX Version | 12 |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
||
| AMD Radeon 780M | GPU | AMD Radeon 780M |
| Decode / Encode | Codec h265 / HEVC (8 bit) | Decode / Encode |
| Decode / Encode | Codec h265 / HEVC (10 bit) | Decode / Encode |
| Decode / Encode | Codec h264 | Decode / Encode |
| Decode | Codec VP9 | Decode |
| Decode | Codec VP8 | Decode |
| Decode / Encode | Codec AV1 | Decode / Encode |
| Decode | Codec AVC | Decode |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeThe AMD Ryzen 9 8945HS can use up to 256 GB of memory in 2 memory channels. The maximum memory bandwidth is 120.0 GB/s. The AMD Ryzen 7 7840HS supports up to 256 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 120.0 GB/s. |
||
| AMD Ryzen 9 8945HS | Characteristic | AMD Ryzen 7 7840HS |
| DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 | Memory | DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 |
| 256 GB | Max. Memory | 256 GB |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 120.0 GB/s | Max. Bandwidth | 120.0 GB/s |
| No | ECC | Yes |
| 8.00 MB | L2 Cache | 8.00 MB |
| 16.00 MB | L3 Cache | 16.00 MB |
| 4.0 | PCIe version | 4.0 |
| 20 | PCIe lanes | 20 |
| 39.4 GB/s | PCIe Bandwidth | 39.4 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Ryzen 9 8945HS is 45 W, while the AMD Ryzen 7 7840HS has a TDP of 54 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
||
| AMD Ryzen 9 8945HS | Characteristic | AMD Ryzen 7 7840HS |
| 45 W | TDP (PL1 / PBP) | 54 W |
| -- | TDP (PL2) | -- |
| 54 W | TDP up | 60 W |
| 35 W | TDP down | 35 W |
| 100 °C | Tjunction max. | 100 °C |
Technical detailsThe AMD Ryzen 9 8945HS is manufactured in 4 nm and has 24.00 MB cache. The AMD Ryzen 7 7840HS is manufactured in 4 nm and has a 24.00 MB cache. |
||
| AMD Ryzen 9 8945HS | Characteristic | AMD Ryzen 7 7840HS |
| 4 nm | Technology | 4 nm |
| Monolithic | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 | ISA extensions | SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 |
| FP8 | Socket | FP8 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | Windows 10, Windows 11, Linux |
| Q1/2024 | Release date | Q1/2023 |
| -- | Release price | -- |
| show more data | show more data | |
8C 16T @ 4.00 GHz (5.20 GHz) buy now on Amazon and save!
8C 16T @ 3.80 GHz (5.10 GHz) buy now on Amazon and save!
|
||
Rate these processors
Average performance in benchmarks
⌀ Single core performance in 3 CPU benchmarks
⌀ Multi core performance in 4 CPU benchmarks
Cinebench 2024 (Single-Core)
The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
|
AMD Ryzen 9 8945HS
8C 16T @ 5.20 GHz |
||
|
AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz |
||
Cinebench 2024 (Multi-Core)
The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 5.20 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz |
||
Geekbench 6 (Single-Core)
Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 5.20 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz |
||
Geekbench 6 (Multi-Core)
The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 4.00 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz |
||
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 5.20 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz |
||
Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 4.00 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz |
||
iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
|
|
AMD Ryzen 9 8945HS
AMD Radeon 780M @ 2.80 GHz |
||
|
|
AMD Ryzen 7 7840HS
AMD Radeon 780M @ 2.70 GHz |
||
Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 4.00 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz |
||
AI performance (NPU)
The performance values of the processor's AI unit. The isolated NPU performance is given here, the total AI performance (NPU+CPU+iGPU) can be higher.
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
|
|
AMD Ryzen 9 8945HS
8C 16T @ 4.00 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 3.80 GHz |
||
Cinebench R23 (Single-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 5.20 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz |
||
Cinebench R23 (Multi-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 4.00 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz |
||
CPU-Z Benchmark 17 (Single-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 5.20 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz |
||
CPU-Z Benchmark 17 (Multi-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
|
|
AMD Ryzen 9 8945HS
8C 16T @ 4.00 GHz |
||
|
|
AMD Ryzen 7 7840HS
8C 16T @ 3.80 GHz |
||
CPU performance per watt (efficiency)
Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
|
|
AMD Ryzen 9 8945HS
4.00 GHz |
||
|
|
AMD Ryzen 7 7840HS
15,930 CB R23 MC @ 55 W |
||
Devices using this processor |
|
| AMD Ryzen 9 8945HS | AMD Ryzen 7 7840HS |
| Unknown | Lenovo IdeaPad Pro 5 14 Lenovo IdeaPad Pro 5 16 |
Popular comparisons containing this CPUs
back to index