Phenom II X3 P840 vs Phenom II X3 P820
Aggregate performance score
Phenom II X3 P840 outperforms Phenom II X3 P820 by a significant 24% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X3 P820 and Phenom II X3 P840 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2754 | 2598 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | 3x AMD Phenom II | 3x AMD Phenom II |
| Power efficiency | 2.50 | 3.10 |
| Architecture codename | Champlain (2010−2011) | Champlain (2010−2011) |
| Release date | 12 May 2010 (14 years ago) | 4 October 2010 (14 years ago) |
Detailed specifications
Phenom II X3 P820 and Phenom II X3 P840 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) | 3 (Tri-Core) |
| Threads | 3 | 3 |
| Boost clock speed | 1.8 GHz | 1.9 GHz |
| Bus rate | 3600 MHz | 3600 MHz |
| L1 cache | 384 KB | 384 KB |
| L2 cache | 1.5 MB | 1.5 MB |
| Chip lithography | 45 nm | 45 nm |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X3 P820 and Phenom II X3 P840 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.
| Socket | S1 | S1 |
| Power consumption (TDP) | 25 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X3 P820 and Phenom II X3 P840. 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) | Virtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a) |
| VirusProtect | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X3 P820 and Phenom II X3 P840 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X3 P820 and Phenom II X3 P840. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
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 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.
Pros & cons summary
| Performance score | 0.66 | 0.82 |
| Recency | 12 May 2010 | 4 October 2010 |
Phenom II X3 P840 has a 24.2% higher aggregate performance score, and an age advantage of 4 months.
The Phenom II X3 P840 is our recommended choice as it beats the Phenom II X3 P820 in performance tests.
Should you still have questions on choice between Phenom II X3 P820 and Phenom II X3 P840, ask them in Comments section, and we shall answer.
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