i7-1355U vs Ryzen 7 7840H
Aggregate performance score
Ryzen 7 7840H outperforms Core i7-1355U by an impressive 91% based on our aggregate benchmark results.
Primary details
Comparing Ryzen 7 7840H and Core i7-1355U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 339 | 811 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | no data | Intel Raptor Lake-U |
| Power efficiency | 48.33 | 58.97 |
| Architecture codename | Phoenix (2023−2024) | Raptor Lake-U (2023) |
| Release date | January 2023 (1 year ago) | 4 January 2023 (1 year ago) |
| Launch price (MSRP) | no data | $469 |
Detailed specifications
Ryzen 7 7840H and Core i7-1355U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 8 (Octa-Core) | 10 (Deca-Core) |
| Threads | 16 | 12 |
| Base clock speed | 3.8 GHz | 1.7 GHz |
| Boost clock speed | 5.1 GHz | 5 GHz |
| L1 cache | 64K (per core) | 80K (per core) |
| L2 cache | 1 MB (per core) | 1.25 MB (per core) |
| L3 cache | 16 MB (shared) | 12 MB (shared) |
| Chip lithography | 4 nm | Intel 7 nm |
| Die size | 178 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 25,000 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
Compatibility
Information on Ryzen 7 7840H and Core i7-1355U compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | FP8 | FCBGA1744 |
| Power consumption (TDP) | 35 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 7 7840H and Core i7-1355U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Precision Boost 2 | + | no data |
| Deep Learning Boost | - | + |
Security technologies
Ryzen 7 7840H and Core i7-1355U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 7 7840H and Core i7-1355U are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 7 7840H and Core i7-1355U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-5600 | DDR5-5200, DDR4-3200, LPDDR4x-4267 |
| Maximum memory size | no data | 96 GB |
| Max memory channels | no data | 2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 780M | Intel® Iris® Xe Graphics eligible |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 1.3 GHz |
| Execution Units | no data | 96 |
Graphics interfaces
Available interfaces and connections of Ryzen 7 7840H and Core i7-1355U integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Ryzen 7 7840H and Core i7-1355U integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4096 x 2304 @ 60Hz |
| Max resolution over eDP | no data | 4096 x 2304 @ 120Hz |
| Max resolution over DisplayPort | no data | 7680 x 4320 @ 60Hz |
Graphics API support
APIs supported by Ryzen 7 7840H and Core i7-1355U integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12.1 |
| OpenGL | no data | 4.6 |
Peripherals
Specifications and connection of peripherals supported by Ryzen 7 7840H and Core i7-1355U.
| PCIe version | 4.0 | 4.0 |
| PCI Express lanes | 20 | 8 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 18.55 | 9.70 |
| Physical cores | 8 | 10 |
| Threads | 16 | 12 |
| Power consumption (TDP) | 35 Watt | 15 Watt |
Ryzen 7 7840H has a 91.2% higher aggregate performance score, and 33.3% more threads.
i7-1355U, on the other hand, has 25% more physical cores, and 133.3% lower power consumption.
The Ryzen 7 7840H is our recommended choice as it beats the Core i7-1355U in performance tests.
Should you still have questions on choice between Ryzen 7 7840H and Core i7-1355U, ask them in Comments section, and we shall answer.
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