Phenom II X3 P820 vs Phenom II X4 840
Aggregate performance score
Phenom II X4 840 outperforms Phenom II X3 P820 by a whopping 130% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2346 | 2967 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.08 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | 3x AMD Phenom II |
| Power efficiency | 0.62 | 1.02 |
| Designer | AMD | AMD |
| Architecture codename | Propus (2009−2011) | Champlain (2010−2011) |
| Release date | 4 January 2011 (14 years ago) | 12 May 2010 (15 years ago) |
| Launch price (MSRP) | $90 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Phenom II X4 840 and Phenom II X3 P820 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) | 3 (Tri-Core) |
| Threads | 4 | 3 |
| Base clock speed | 3.2 GHz | no data |
| Boost clock speed | 3.2 GHz | 1.8 GHz |
| Bus rate | no data | 3600 MHz |
| L1 cache | 128 KB (per core) | 384 KB |
| L2 cache | 512 KB (per core) | 1.5 MB |
| L3 cache | 0 KB | no data |
| Chip lithography | 45 nm | 45 nm |
| Die size | 169 mm2 | no data |
| Number of transistors | 300 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X4 840 and Phenom II X3 P820 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 | no data |
| Socket | AM3 | S1 |
| Power consumption (TDP) | 95 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X4 840 and Phenom II X3 P820. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Virtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a) |
| VirusProtect | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 840 and Phenom II X3 P820 are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 840 and Phenom II X3 P820. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 840 and Phenom II X3 P820.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Performance score | 1.38 | 0.60 |
| Recency | 4 January 2011 | 12 May 2010 |
| Physical cores | 4 | 3 |
| Threads | 4 | 3 |
| Power consumption (TDP) | 95 Watt | 25 Watt |
Phenom II X4 840 has a 130% higher aggregate performance score, an age advantage of 7 months, and 33.3% more physical cores and 33.3% more threads.
Phenom II X3 P820, on the other hand, has 280% lower power consumption.
The AMD Phenom II X4 840 is our recommended choice as it beats the AMD Phenom II X3 P820 in performance tests.
Note that Phenom II X4 840 is a desktop processor while Phenom II X3 P820 is a notebook one.
Other comparisons
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