A6-4455M vs Phenom II X3 P820
Aggregate performance score
Phenom II X3 P820 outperforms A6-4455M by a substantial 32% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X3 P820 and A6-4455M processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2738 | 2876 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | 3x AMD Phenom II | AMD A-Series |
| Power efficiency | 2.49 | 2.77 |
| Architecture codename | Champlain (2010−2011) | Trinity (2012−2013) |
| Release date | 12 May 2010 (14 years ago) | 15 May 2012 (12 years ago) |
Detailed specifications
Phenom II X3 P820 and A6-4455M 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) | 2 (Dual-core) |
| Threads | 3 | 2 |
| Base clock speed | no data | 2.1 GHz |
| Boost clock speed | 1.8 GHz | 2.6 GHz |
| Bus rate | 3600 MHz | no data |
| L1 cache | 384 KB | 92 KB |
| L2 cache | 1.5 MB | 2 MB (shared) |
| L3 cache | no data | 0 KB |
| Chip lithography | 45 nm | 32 nm |
| Die size | no data | 246 mm2 |
| Maximum case temperature (TCase) | no data | 100 °C |
| Number of transistors | no data | 1,178 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X3 P820 and A6-4455M 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 | FP2 |
| Power consumption (TDP) | 25 Watt | 17 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X3 P820 and A6-4455M. 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) | 86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMA |
| AES-NI | - | + |
| FMA | - | + |
| AVX | - | + |
| VirusProtect | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X3 P820 and A6-4455M are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X3 P820 and A6-4455M. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | unknown Dual-channel |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon HD 7500G |
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.
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.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
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 | 0.66 | 0.50 |
| Recency | 12 May 2010 | 15 May 2012 |
| Physical cores | 3 | 2 |
| Threads | 3 | 2 |
| Chip lithography | 45 nm | 32 nm |
| Power consumption (TDP) | 25 Watt | 17 Watt |
Phenom II X3 P820 has a 32% higher aggregate performance score, and 50% more physical cores and 50% more threads.
A6-4455M, on the other hand, has an age advantage of 2 years, a 40.6% more advanced lithography process, and 47.1% lower power consumption.
The Phenom II X3 P820 is our recommended choice as it beats the A6-4455M in performance tests.
Should you still have questions on choice between Phenom II X3 P820 and A6-4455M, ask them in Comments section, and we shall answer.
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