AMD Ryzen 7 7840U vs AMD Ryzen 7 H 255
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Compared 2 processors: AMD Ryzen 7 7840U, vs AMD Ryzen 7 H 255. 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 | 91.5 GOps/s | 97.5 GOps/s |
| Floating-Point Math | 52.2 GOps/s | 59.7 GOps/s |
| Prime Number Search | 80 M primes/s | 88 M primes/s |
| Random String Sort | 33.7 M strings/s | 42.5 M strings/s |
| Data Encryption | 17.8 GB/s | 20.6 GB/s |
| Data Compression | 290.8 MB/s | 349.6 MB/s |
| Physics | 1254 frames/s | 1391 frames/s |
| Extended Instructions | 206 M matrices/s | 259 M matrices/s |
| File Compression | 1110 MB/s | 1020 MB/s |
| Clang Compilation | 82.2 KLines/s | 99.8 KLines/s |
| HTML5 Browser | 210.4 pages/s | 255.5 pages/s |
| PDF Rendering | 298.4 MP/sec | 378.2 MP/sec |
| Text Processing | 250.6 pages/s | 259.2 pages/s |
| Background Blur | 47.5 frames/s | 61.1 frames/s |
| Photo Processing | 90.5 frames/s | 99.7 frames/s |
| Ray Tracing | 17.5 MP/sec | 21.5 MP/sec |
Blender
Performance/Watt
| Geekbench 6 Multi / W | 357.5 PPW | 234.6 PPW |
| PassMark CPU / W | 831.5 PPW | 532.9 PPW |
| Cinebench 2024 / W | 25.4 PPW | 17.1 PPW |
| Blender / W | 6.65 PPW | 4.1 PPW |
General Info
| Manufacturer | AMD | AMD |
| Announced | May, 3, 2023 | August, 4, 2025 |
| Type | Laptop use | Laptop use |
| Architecture | x86-64 | x86-64 |
| Codename | Zen 4 (Phoenix) | Zen 4 (Hawk Point) |
| Integrated GPU | Radeon 780M | Radeon 780M |
Processor
| Cores | 8 | 8 |
| Threads | 16 | 16 |
| Frequency | 3.3 GHz | 3.8 GHz |
| Max Frequency (Turbo) | 5.1 GHz | 4.9 GHz |
| Cores count | 8 | 8 |
| Threads count | 16 | 16 |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 33x | 38x |
| L1 cache | 64 KB/core | 64 KB/core |
| L2 cache | 1000 KB/core | 1000 KB/core |
| L3 Cache | 16 MB total | 16 MB total |
| Unlocked multiplier | No | No |
Package
| Transistor count | 25 billion | 25 billion |
| Process tech. | 4 nm | 4 nm |
| Power (TDP) | 15-30 W | 35-54 W |
| Socket | FP8 | FP8 |
| Critical temp. | 100 °C | 100 °C |
Memory Support
| Memory Type | - DDR5-5600 - LPDDR5x-7500 |
- DDR5-5600 - LPDDR5x-7500 |
| Max Size | 256 GB | 256 GB |
| Channels | 2 | 2 |
| ECC support | No | No |
Other
| PCIe Version | 4.0 | 4.0 |
| Max PCIe Lanes | 20 | 20 |
Results
No clear favorite identified yet; updates may follow as new data arrives.
Survey
Total Votes: 0
