Atom E3845 vs Phenom II X3 P820
Aggregate performance score
Atom E3845 outperforms Phenom II X3 P820 by a minimal 2% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X3 P820 and Atom E3845 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2754 | 2747 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | 3x AMD Phenom II | Atom |
| Power efficiency | 2.50 | 6.34 |
| Architecture codename | Champlain (2010−2011) | Bay Trail-I (2013) |
| Release date | 12 May 2010 (14 years ago) | 8 October 2013 (11 years ago) |
Detailed specifications
Phenom II X3 P820 and Atom E3845 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 | 3 (Tri-Core) | 4 (Quad-Core) |
| Threads | 3 | 4 |
| Boost clock speed | 1.8 GHz | 1.91 GHz |
| Bus rate | 3600 MHz | no data |
| L1 cache | 384 KB | 64 KB (per core) |
| L2 cache | 1.5 MB | 512 KB (per core) |
| L3 cache | no data | 0 KB |
| Chip lithography | 45 nm | 22 nm |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X3 P820 and Atom E3845 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 | S1 | Intel BGA1170 |
| Power consumption (TDP) | 25 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X3 P820 and Atom E3845. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Virtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a) | no data |
| VirusProtect | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X3 P820 and Atom E3845 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X3 P820 and Atom E3845. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel HD Graphics |
Pros & cons summary
| Performance score | 0.66 | 0.67 |
| Recency | 12 May 2010 | 8 October 2013 |
| Physical cores | 3 | 4 |
| Threads | 3 | 4 |
| Chip lithography | 45 nm | 22 nm |
| Power consumption (TDP) | 25 Watt | 10 Watt |
Atom E3845 has a 1.5% higher aggregate performance score, an age advantage of 3 years, 33.3% more physical cores and 33.3% more threads, a 104.5% more advanced lithography process, and 150% lower power consumption.
Given the minimal performance differences, no clear winner can be declared between Phenom II X3 P820 and Atom E3845.
Should you still have questions on choice between Phenom II X3 P820 and Atom E3845, ask them in Comments section, and we shall answer.
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