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AMD Ryzen 7 7840S
Benchmarks & Specs
Last updated:
AMD Ryzen 7 7840S
Summary
The AMD Ryzen 7 7840S is a notable mobile processor from AMD. It is based on the modern Phoenix architecture, which is built on Zen 4 cores. Manufacturing in the advanced 4 nm process ensures high energy efficiency for this chip. An outstanding feature is the integrated AMD Radeon 780M graphics unit.
This offers very solid graphics performance for many different applications in everyday life. The processor is ideal for everyday tasks. Even more demanding multitasking is easily possible with this chip. Even more complex programs run surprisingly smoothly. We were surprised at how well it still holds up in comparison today.
With its 8 MB L2 and 16 MB L3 cache, data is processed particularly quickly. This contributes significantly to consistently smooth usage. A maximum memory bandwidth of 77 GB/s also supports fast data access. The entire system therefore remains pleasantly responsive and agile at all times. With the AMD Ryzen 7 7840S, AMD has created a very reliable chip.
It offers a harmonious blend of considerable performance and high efficiency for mobile devices. Overall, the AMD Ryzen 7 7840S is a well-considered choice for notebooks.
This offers very solid graphics performance for many different applications in everyday life. The processor is ideal for everyday tasks. Even more demanding multitasking is easily possible with this chip. Even more complex programs run surprisingly smoothly. We were surprised at how well it still holds up in comparison today.
With its 8 MB L2 and 16 MB L3 cache, data is processed particularly quickly. This contributes significantly to consistently smooth usage. A maximum memory bandwidth of 77 GB/s also supports fast data access. The entire system therefore remains pleasantly responsive and agile at all times. With the AMD Ryzen 7 7840S, AMD has created a very reliable chip.
It offers a harmonious blend of considerable performance and high efficiency for mobile devices. Overall, the AMD Ryzen 7 7840S is a well-considered choice for notebooks.
- Modern Phoenix (Zen 4) architecture
- Efficient 4 nm manufacturing
- Integrated AMD Radeon 780M graphics
- Balanced performance and high energy efficiency
Benchmarks
Performance Overview
Average performance across multiple benchmarks
Single-core performance
Multi-core performance
iGPU - FP32 Performance (Single-precision GFLOPS)
Apple M4 (10-CPU)
101 %
Apple M4 (10 Core)
Apple M4
101 %
Apple M4 (10 Core)
AMD Ryzen 7 7840S
100 %
AMD Radeon 780M
AMD Ryzen 7 8745HS
96 %
AMD Radeon 780M
Intel Iris Xe 7 Core Graphics 112 EUs (Meteor Lake)
More benchmarks
Specifications
At a glance
| Property | Value |
|---|---|
| Family | AMD Ryzen 7 (79) |
| CPU group | AMD Ryzen 7040 (21) |
| Architecture | Phoenix (Zen 4) |
| Technology | 4 nm |
| Segment | Notebook |
| Socket | FP8 |
| Generation | 6 |
| Predecessor | |
| Successor |
CPU Cores and Base Frequency
| Property | Value |
|---|---|
| CPU Cores / Threads | 8 / 16 |
| Hyperthreading / SMT | ✓ |
| Core architecture | normal |
| Cores: | 8x Zen 4 |
| Frequency: | 3.30 GHz |
| Turbo Frequency (1 Core): | 5.10 GHz |
| Turbo Frequency (8 Cores): | |
| L2-Cache | 8.00 MB |
| L3-Cache | 16.00 MB |
| Overclocking | No |
Integrated graphics (iGPU)
| Property | Value |
|---|---|
| GPU name | AMD Radeon 780M |
| GPU frequency | 0.80 - 2.70 GHz |
| CUs / Shader | 12 / 768 |
| Raytracing | ✓ |
| Max. displays | 4 |
| Max. GPU Memory | 32 GB |
| Technology | 4 nm |
| Release date | Q1/2023 |
Memory & PCIe
| Memory type | Memory bandwidth |
|---|---|
| DDR5-4800 DDR5-5600 LPDDR5-6400 LPDDR5X-7500 | 76.8 GB/s 89.6 GB/s 102.4 GB/s 120.0 GB/s |
| Property | Value |
| Max. Memory | 256 GB |
| Memory channels | 2 |
| ECC | ✓ |
| PCIe | 4.0 x 20 |
| PCIe Bandwidth | 39.4 GB/s |
Thermal Management
| Property | Value |
|---|---|
| TDP | 15 W |
| TDP (PL2) | |
| TDP up | 28 W |
| TDP down | |
| T. junction max. | 100 °C |
Technical details
| Property | Value |
|---|---|
| Chip design | Monolithic |
| AES-NI | ✓ |
| Operating systems | Windows 10, Windows 11, Linux |
| Instruction set | x86-64 (64 bit) |
| ISA extensions | SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 |
| Release date | Q2/2023 |
| Release price | |
| Documents |
User Reviews
Most popular CPUs in the category Notebook
1
AMD Ryzen 7 7840S
8C / 16T · 5.10 GHz
2
Apple M5 Max (18-CPU 32-GPU)
18C / 18T · 4.61 GHz
3
Apple M5 Max (18-CPU 40-GPU)
18C / 18T · 4.61 GHz
4
Apple M2 Ultra (76-GPU)
24C / 24T · 3.50 GHz
5
Apple M1 Ultra (64-GPU)
20C / 20T · 3.20 GHz
6
Apple M1 Ultra (48-GPU)
20C / 20T · 3.20 GHz
7
Apple M4 (8-CPU)
8C / 8T · 4.46 GHz
8
Apple M2 Ultra (60-GPU)
24C / 24T · 3.50 GHz
9
Apple M1 Pro (8-CPU)
8C / 8T · 3.20 GHz
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