AMD Ryzen 7 7840HS vs AMD Ryzen 9 8940HX
64
out 100
VS
70
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Compared 2 processors: AMD Ryzen 7 7840HS, vs AMD Ryzen 9 8940HX. Below are specs, tests, pros and cons for each device
Review
Single-Thread Perf.
Single-Core Benchmark Score
Multi-Thread Perf.
Multi-Core Benchmark Score
Energy Efficiency
Chip Power Efficiency
Integrated Graphics
iGPU Performance in Games & 3D
Tests & specs
Specs & test comparisonBenchmarks
| Integer Math | 99.4 GOps/s | n/a |
| Floating-Point Math | 60.4 GOps/s | n/a |
| Prime Number Search | 89 M primes/s | n/a |
| Random String Sort | 40.3 M strings/s | n/a |
| Data Encryption | 20.8 GB/s | n/a |
| Data Compression | 348.1 MB/s | n/a |
| Physics | 1385 frames/s | n/a |
| Extended Instructions | 259 M matrices/s | n/a |
| File Compression | 1120 MB/s | 1250 MB/s |
| Clang Compilation | 102.5 KLines/s | 178.9 KLines/s |
| HTML5 Browser | 217.2 pages/s | 262.1 pages/s |
| PDF Rendering | 350 MP/sec | 430 MP/sec |
| Text Processing | 251.8 pages/s | 255 pages/s |
| Background Blur | 59.4 frames/s | 55.9 frames/s |
| Photo Processing | 87.6 frames/s | 94.7 frames/s |
| Ray Tracing | 22.5 MP/sec | 39.9 MP/sec |
Blender
Performance/Watt
| Geekbench 6 Multi / W | 223.8 PPW | 278.5 PPW |
| PassMark CPU / W | 533.5 PPW | n/a |
| Cinebench 2024 / W | 17.5 PPW | 29.6 PPW |
| Blender / W | 4.05 PPW | n/a |
General Info
| Manufacturer | AMD | AMD |
| Announced | January, 4, 2023 | April, 1, 2025 |
| Type | Laptop use | Laptop use |
| Architecture | x86-64 | x86-64 |
| Codename | Zen 4 (Phoenix) | Zen 4 (Dragon Range) |
| Integrated GPU | Radeon 780M | Radeon 610M |
Processor
| Cores | 8 | 16 |
| Threads | 16 | 32 |
| Frequency | 3.8 GHz | 2.4 GHz |
| Max Frequency (Turbo) | 5.1 GHz | 5.3 GHz |
| Cores count | 8 | 16 |
| Threads count | 16 | 32 |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 38x | 24 |
| L1 cache | 64 KB/core | 64 KB/core |
| L2 cache | 1000 KB/core | 1000 KB/core |
| L3 Cache | 16 MB total | 64 MB total |
| Unlocked multiplier | No | Yes |
Package
| Transistor count | 25 billion | n/a |
| Process tech. | 4 nm | 5 nm |
| Power (TDP) | 35-54 W | 55 W |
| Max TDP (Boost) | n/a | 75 W |
| Socket | FP8 | FL1 |
| Critical temp. | 100 °C | 100 °C |
Memory Support
| Memory Type | - DDR5-5600 - LPDDR5x-7500 |
DDR5-5200 |
| Max Size | 256 GB | 64 GB |
| Channels | 2 | 2 |
| ECC support | Yes | No |
Other
| PCIe Version | 4.0 | 5.0 |
| Max PCIe Lanes | 20 | 28 |
| Tech | n/a | - Compute: AVX-512, BMI1, BMI2, F16C, SHA - Performance: Precision Boost 2, SMT - Virtualization: AMD-V - Security: EVP, NX-Bit, SMAP, SMEP |
Note
AMD Ryzen 7 7840HS:
DDR5 memory is supported only on the FP7r2 socket, while FP7 and FP8 sockets support LPDDR5/x. ECC support is available exclusively on the FP7r2 socket.
Results
No clear favorite identified yet; updates may follow as new data arrives.
Survey
Total Votes: 0
