Celeron J4115 vs i7-2840QM
Aggregate performance score
Core i7-2840QM outperforms Celeron J4115 by a considerable 43% based on our aggregate benchmark results.
Primary details
Comparing Core i7-2840QM and Celeron J4115 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1761 | 2045 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Core i7 | Intel Gemini Lake |
| Power efficiency | 5.09 | 16.02 |
| Architecture codename | Sandy Bridge (2011−2013) | Gemini Lake (2019) |
| Release date | 4 September 2011 (13 years ago) | 4 November 2019 (5 years ago) |
Detailed specifications
Core i7-2840QM and Celeron J4115 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 | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 8 | 4 |
| Base clock speed | no data | 1.8 GHz |
| Boost clock speed | 2.4 GHz | 2.5 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 24 | no data |
| L1 cache | 256 KB | no data |
| L2 cache | 1 MB | 4 MB |
| L3 cache | 8 MB | 4 MB |
| Chip lithography | 32 nm | 14 nm |
| Die size | 216 mm2 | no data |
| Maximum core temperature | no data | 105 °C |
| Number of transistors | 1160 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Core i7-2840QM and Celeron J4115 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 (Uniprocessor) | 1 |
| Socket | Socket G2 | FCBGA1090 |
| Power consumption (TDP) | 45 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-2840QM and Celeron J4115. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.2 |
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | - |
| vPro | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | - |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Smart Response | no data | - |
| GPIO | no data | + |
| Turbo Boost Max 3.0 | no data | - |
Security technologies
Core i7-2840QM and Celeron J4115 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | no data | + |
| Secure Key | no data | + |
| MPX | - | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-2840QM and Celeron J4115 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-2840QM and Celeron J4115. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4 |
| Maximum memory size | 32 GB | 8 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | 25.598 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics 3000 | Intel UHD Graphics 600 |
| Max video memory | no data | 8 GB |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 750 MHz |
| Execution Units | no data | 12 |
Graphics interfaces
Available interfaces and connections of Core i7-2840QM and Celeron J4115 integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| MIPI-DSI | no data | + |
Graphics image quality
Maximum display resolutions supported by Core i7-2840QM and Celeron J4115 integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
Graphics API support
APIs supported by Core i7-2840QM and Celeron J4115 integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.4 |
Peripherals
Specifications and connection of peripherals supported by Core i7-2840QM and Celeron J4115.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 6 |
| USB revision | no data | 2.0/3.0 |
| Total number of SATA ports | no data | 2 |
| Max number of SATA 6 Gb/s Ports | no data | 2 |
| Number of USB ports | no data | 8 |
| Integrated LAN | no data | - |
| UART | no data | + |
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 | 2.50 | 1.75 |
| Integrated graphics card | 0.66 | 0.87 |
| Recency | 4 September 2011 | 4 November 2019 |
| Threads | 8 | 4 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 45 Watt | 10 Watt |
i7-2840QM has a 42.9% higher aggregate performance score, and 100% more threads.
Celeron J4115, on the other hand, has 31.8% faster integrated GPU, an age advantage of 8 years, a 128.6% more advanced lithography process, and 350% lower power consumption.
The Core i7-2840QM is our recommended choice as it beats the Celeron J4115 in performance tests.
Be aware that Core i7-2840QM is a notebook processor while Celeron J4115 is a desktop one.
Should you still have questions on choice between Core i7-2840QM and Celeron J4115, ask them in Comments section, and we shall answer.
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