Ryzen 7 7840U vs Core 2 Duo L7400
Aggregate performance score
Ryzen 7 7840U outperforms Core 2 Duo L7400 by a whopping 4816% based on our aggregate benchmark results.
Primary details
Comparing Core 2 Duo L7400 and Ryzen 7 7840U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3079 | 427 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | no data | AMD Phoenix (Zen 4, Ryzen 7040) |
| Power efficiency | 1.78 | 53.17 |
| Architecture codename | no data | Phoenix-U (Zen 4) (2023) |
| Release date | 1 July 2006 (18 years ago) | May 2023 (1 year ago) |
Detailed specifications
Core 2 Duo L7400 and Ryzen 7 7840U 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 | 2 (Dual-core) | 8 (Octa-Core) |
| Threads | no data | 16 |
| Base clock speed | 1.5 GHz | 3.3 GHz |
| Boost clock speed | no data | 5.1 GHz |
| Bus rate | 667 MHz | no data |
| L1 cache | no data | 64K (per core) |
| L2 cache | no data | 1 MB (per core) |
| L3 cache | 4 MB L2 Cache | 16 MB (shared) |
| Chip lithography | 65 nm | 4 nm |
| Die size | no data | 178 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | no data | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| VID voltage range | 0.9V-1.1V | no data |
Compatibility
Information on Core 2 Duo L7400 and Ryzen 7 7840U 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 | no data | 1 |
| Socket | PBGA479 | FP8 |
| Power consumption (TDP) | 17 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo L7400 and Ryzen 7 7840U. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | - | no data |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
| Precision Boost 2 | no data | + |
Security technologies
Core 2 Duo L7400 and Ryzen 7 7840U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo L7400 and Ryzen 7 7840U are enumerated here.
| AMD-V | - | + |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Duo L7400 and Ryzen 7 7840U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR5-5600 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 780M |
Peripherals
Specifications and connection of peripherals supported by Core 2 Duo L7400 and Ryzen 7 7840U.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
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 | 0.32 | 15.73 |
| Physical cores | 2 | 8 |
| Chip lithography | 65 nm | 4 nm |
| Power consumption (TDP) | 17 Watt | 28 Watt |
Core 2 Duo L7400 has 64.7% lower power consumption.
Ryzen 7 7840U, on the other hand, has a 4815.6% higher aggregate performance score, 300% more physical cores, and a 1525% more advanced lithography process.
The Ryzen 7 7840U is our recommended choice as it beats the Core 2 Duo L7400 in performance tests.
Should you still have questions on choice between Core 2 Duo L7400 and Ryzen 7 7840U, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
