Pentium B940 vs Celeron 3865U
Aggregate performance score
Celeron 3865U outperforms Pentium B940 by an impressive 54% based on our aggregate benchmark results.
Primary details
Comparing Celeron 3865U and Pentium B940 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2580 | 2835 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | Intel Pentium |
| Power efficiency | 5.24 | 1.46 |
| Architecture codename | Kaby Lake-U (2017) | Sandy Bridge (2011−2013) |
| Release date | 3 January 2017 (7 years ago) | 19 June 2011 (13 years ago) |
| Launch price (MSRP) | $107 | $134 |
Detailed specifications
Celeron 3865U and Pentium B940 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) | 2 (Dual-core) |
| Threads | 2 | 2 |
| Base clock speed | 1.8 GHz | 2 GHz |
| Boost clock speed | 1.8 GHz | 2 GHz |
| Bus type | OPI | DMI 2.0 |
| Bus rate | 4 GT/s | 4 × 5 GT/s |
| Multiplier | 22 | 20 |
| L1 cache | 64K (per core) | 64K (per core) |
| L2 cache | 256K (per core) | 256K (per core) |
| L3 cache | 2 MB (shared) | 2 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | 98.7 mm2 | 131 mm2 |
| Maximum core temperature | 100 °C | 85 °C |
| Number of transistors | no data | 504 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron 3865U and Pentium B940 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 (Uniprocessor) |
| Socket | FCBGA1356,FPBGA1356 | PGA988 |
| Power consumption (TDP) | 15 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron 3865U and Pentium B940. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | - |
| FMA | - | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | no data |
| My WiFi | + | - |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | + |
| Smart Response | + | no data |
| Demand Based Switching | no data | - |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Celeron 3865U and Pentium B940 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Secure Key | + | no data |
| MPX | + | - |
| SGX | Yes with Intel® ME | no data |
| OS Guard | + | no data |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron 3865U and Pentium B940 are enumerated here.
| AMD-V | + | - |
| VT-d | + | - |
| VT-x | + | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron 3865U and Pentium B940. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 | DDR3 |
| Maximum memory size | 32 GB | 16 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 34.134 GB/s | 21.335 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 610 | Intel® HD Graphics for 2nd Generation Intel® Processors |
| Max video memory | 32 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | - |
| Clear Video HD | + | - |
| Graphics max frequency | 900 MHz | 1.1 GHz |
Graphics interfaces
Available interfaces and connections of Celeron 3865U and Pentium B940 integrated GPUs.
| Number of displays supported | 3 | 2 |
| eDP | + | + |
| DisplayPort | + | + |
| HDMI | + | + |
| DVI | + | no data |
| SDVO | no data | + |
| CRT | no data | + |
Graphics image quality
Maximum display resolutions supported by Celeron 3865U and Pentium B940 integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | + | no data |
| Max resolution over HDMI 1.4 | 4096x2304@24Hz | no data |
| Max resolution over eDP | 4096x2304@60Hz | no data |
| Max resolution over DisplayPort | 4096x2304@60Hz | no data |
Graphics API support
APIs supported by Celeron 3865U and Pentium B940 integrated GPUs, sometimes API versions are included.
| DirectX | 12 | no data |
| OpenGL | 4.4 | no data |
Peripherals
Specifications and connection of peripherals supported by Celeron 3865U and Pentium B940.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 10 | 16 |
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.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Pros & cons summary
| Performance score | 0.83 | 0.54 |
| Recency | 3 January 2017 | 19 June 2011 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 15 Watt | 35 Watt |
Celeron 3865U has a 53.7% higher aggregate performance score, an age advantage of 5 years, a 128.6% more advanced lithography process, and 133.3% lower power consumption.
The Celeron 3865U is our recommended choice as it beats the Pentium B940 in performance tests.
Should you still have questions on choice between Celeron 3865U and Pentium B940, ask them in Comments section, and we shall answer.
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