Celeron N4000C vs Athlon X4 840
Aggregate performance score
Athlon X4 840 outperforms Celeron N4000C by a whopping 136% based on our aggregate benchmark results.
Primary details
Comparing Athlon X4 840 and Celeron N4000C processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1870 | 2540 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | 4x Athlon | no data |
| Power efficiency | 3.04 | 13.98 |
| Architecture codename | Kaveri (2014−2015) | no data |
| Release date | August 2014 (10 years ago) | 1 April 2019 (5 years ago) |
Detailed specifications
Athlon X4 840 and Celeron N4000C 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) | 2 (Dual-core) |
| Threads | 4 | 2 |
| Base clock speed | 3.1 GHz | 1.1 GHz |
| Boost clock speed | 3.8 GHz | 2.6 GHz |
| L1 cache | 256K | no data |
| L2 cache | 4 MB | no data |
| L3 cache | no data | 4 MB |
| Chip lithography | 28 nm | 14 nm |
| Die size | 245 mm2 | no data |
| Maximum core temperature | no data | 105 deg C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 2,411 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Athlon X4 840 and Celeron N4000C 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 | Socket FM2+ | FCBGA1090 |
| Power consumption (TDP) | 65 watt | 6 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon X4 840 and Celeron N4000C. 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 | no data | - |
| Enhanced SpeedStep (EIST) | no data | + |
| 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
Athlon X4 840 and Celeron N4000C technologies aimed at improving security, for example, by protecting against hacks.
| 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 Athlon X4 840 and Celeron N4000C 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 Athlon X4 840 and Celeron N4000C. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4/LPDDR4 up to 2400 MT/s |
| Maximum memory size | no data | 8 GB |
| Max memory channels | no data | 2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel UHD Graphics 600 |
| Max video memory | no data | 8 GB |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 650 MHz |
| Execution Units | no data | 12 |
Graphics interfaces
Available interfaces and connections of Athlon X4 840 and Celeron N4000C 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 Athlon X4 840 and Celeron N4000C integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
Graphics API support
APIs supported by Athlon X4 840 and Celeron N4000C integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.4 |
Peripherals
Specifications and connection of peripherals supported by Athlon X4 840 and Celeron N4000C.
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 16 | 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 | 2.17 | 0.92 |
| Recency | on August 2014 | 1 April 2019 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 28 nm | 14 nm |
| Power consumption (TDP) | 65 Watt | 6 Watt |
Athlon X4 840 has a 135.9% higher aggregate performance score, and 100% more physical cores and 100% more threads.
Celeron N4000C, on the other hand, has an age advantage of 4 years, a 100% more advanced lithography process, and 983.3% lower power consumption.
The Athlon X4 840 is our recommended choice as it beats the Celeron N4000C in performance tests.
Note that Athlon X4 840 is a desktop processor while Celeron N4000C is a notebook one.
Should you still have questions on choice between Athlon X4 840 and Celeron N4000C, ask them in Comments section, and we shall answer.
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