Athlon 300U vs Celeron B840
Aggregate performance score
Athlon 300U outperforms Celeron B840 by a whopping 297% based on our aggregate benchmark results.
Primary details
Comparing Celeron B840 and Athlon 300U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2804 | 1776 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | AMD Athlon |
| Power efficiency | 1.65 | 15.28 |
| Architecture codename | Sandy Bridge (2011−2013) | Raven Ridge 2 (2019) |
| Release date | 1 July 2011 (13 years ago) | 6 January 2019 (6 years ago) |
| Launch price (MSRP) | $86 | no data |
Detailed specifications
Celeron B840 and Athlon 300U 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 | 4 |
| Base clock speed | no data | 2.4 GHz |
| Boost clock speed | 1.9 GHz | 3.3 GHz |
| Bus type | DMI 2.0 | PCIe 3.0 |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 19 | 24 |
| L1 cache | 64K (per core) | 128K (per core) |
| L2 cache | 256K (per core) | 512K (per core) |
| L3 cache | 2 MB (shared) | 4 MB (shared) |
| Chip lithography | 32 nm | 14 nm |
| Die size | 131 mm2 | 209.78 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 504 million | 4940 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Celeron B840 and Athlon 300U 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 | G2 (988B) | FP5 |
| Power consumption (TDP) | 35 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron B840 and Athlon 300U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | XFR, FMA3, SSE 4.2, AVX2, SMT |
| AES-NI | - | + |
| FMA | + | - |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
Security technologies
Celeron B840 and Athlon 300U technologies aimed at improving security, for example, by protecting against hacks.
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron B840 and Athlon 300U are enumerated here.
| AMD-V | - | + |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron B840 and Athlon 300U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 Dual-channel |
| Maximum memory size | 16 GB | 64 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 21.335 GB/s | 38.397 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics (Sandy Bridge) (650 - 950 MHz) | AMD Radeon RX Vega 3 ( - 1000 MHz) |
Peripherals
Specifications and connection of peripherals supported by Celeron B840 and Athlon 300U.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 12 |
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 | 0.61 | 2.42 |
| Integrated graphics card | 0.34 | 2.99 |
| Recency | 1 July 2011 | 6 January 2019 |
| Threads | 2 | 4 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 35 Watt | 15 Watt |
Athlon 300U has a 296.7% higher aggregate performance score, 779.4% faster integrated GPU, an age advantage of 7 years, 100% more threads, a 128.6% more advanced lithography process, and 133.3% lower power consumption.
The Athlon 300U is our recommended choice as it beats the Celeron B840 in performance tests.
Should you still have questions on choice between Celeron B840 and Athlon 300U, ask them in Comments section, and we shall answer.
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