AMD Ryzen 7 7840HS vs Intel Core i7 1255U
64
out 100
VS
48
out 100
Compared 2 processors: AMD Ryzen 7 7840HS, vs Intel Core i7 1255U. 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 | 49.1 GOps/s |
| Floating-Point Math | 60.4 GOps/s | 33 GOps/s |
| Prime Number Search | 89 M primes/s | 41 M primes/s |
| Random String Sort | 40.3 M strings/s | 17.1 M strings/s |
| Data Encryption | 20.8 GB/s | 9.3 GB/s |
| Data Compression | 348.1 MB/s | 148.2 MB/s |
| Physics | 1385 frames/s | 798 frames/s |
| Extended Instructions | 259 M matrices/s | 83 M matrices/s |
| File Compression | 1120 MB/s | 626.4 MB/s |
| Clang Compilation | 102.5 KLines/s | 49.1 KLines/s |
| HTML5 Browser | 217.2 pages/s | 179.7 pages/s |
| PDF Rendering | 350 MP/sec | 201.5 MP/sec |
| Text Processing | 251.8 pages/s | 217.7 pages/s |
| Background Blur | 59.4 frames/s | 31.6 frames/s |
| Photo Processing | 87.6 frames/s | 71.1 frames/s |
| Ray Tracing | 22.5 MP/sec | 9.8 MP/sec |
Blender
Performance/Watt
| Geekbench 6 Multi / W | 223.8 PPW | 477.3 PPW |
| PassMark CPU / W | 533.5 PPW | 890.2 PPW |
| Cinebench 2024 / W | 17.5 PPW | n/a |
| Blender / W | 4.05 PPW | 5.15 PPW |
General Info
| Manufacturer | AMD | Intel |
| Announced | January, 4, 2023 | February, 23, 2022 |
| Type | Laptop use | Laptop use |
| Architecture | x86-64 | x86-64 |
| Codename | Zen 4 (Phoenix) | Alder Lake |
| Model number | n/a | i7-1255U |
| Integrated GPU | Radeon 780M | Iris Xe Graphics (96EU) |
Processor
| Cores | 8 | 2 |
| Threads | 16 | 4 |
| Frequency | 3.8 GHz | 1.7 GHz |
| Max Frequency (Turbo) | 5.1 GHz | 4.7 GHz |
| Cores | n/a | 8 |
| Threads | n/a | 8 |
| Frequency | n/a | 1.2 GHz |
| Max Frequency (Turbo) | n/a | 3.5 GHz |
| Cores count | 8 | 10 |
| Threads count | 16 | 12 |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 38x | 17x |
| L1 cache | 64 KB/core | 80 KB/core |
| L2 cache | 1000 KB/core | 1280 KB/core |
| L3 Cache | 16 MB total | 12 MB total |
| Unlocked multiplier | No | No |
Package
| Transistor count | 25 billion | n/a |
| Process tech. | 4 nm | 10 nm |
| Power (TDP) | 35-54 W | 12-15 W |
| Max TDP (Boost) | n/a | 55 W |
| Socket | FP8 | BGA-1744 |
| Critical temp. | 100 °C | 100 °C |
Memory Support
| Memory Type | - DDR5-5600 - LPDDR5x-7500 |
- DDR5-4800 - DDR4-3200 - LPDDR5-5200 - LPDDR4x-4267 |
| Max Size | 256 GB | 64 GB |
| Channels | 2 | 2 |
| ECC support | Yes | No |
Other
| PCIe Version | 4.0 | 4.0 |
| Max PCIe Lanes | 20 | 20 |
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
After analyzing the data, we consider AMD Ryzen 7 7840HS the clear winner in this comparison.
Survey
Total Votes: 0
