Phenom II X3 P840 vs FX-4300
Aggregate performance score
FX-4300 outperforms Phenom II X3 P840 by a whopping 127% based on our aggregate benchmark results.
Primary details
Comparing FX-4300 and Phenom II X3 P840 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1964 | 2574 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.28 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | 3x AMD Phenom II |
| Power efficiency | 1.87 | 3.14 |
| Architecture codename | Vishera (2012−2015) | Champlain (2010−2011) |
| Release date | 23 October 2012 (12 years ago) | 4 October 2010 (14 years ago) |
| Launch price (MSRP) | $122 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
FX-4300 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 | 4 (Quad-Core) | 3 (Tri-Core) |
| Threads | 4 | 3 |
| Base clock speed | 3.8 GHz | no data |
| Boost clock speed | 4 GHz | 1.9 GHz |
| Bus rate | no data | 3600 MHz |
| L1 cache | no data | 384 KB |
| L2 cache | 4096 KB | 1.5 MB |
| Chip lithography | 32 nm | 45 nm |
| Die size | 315 mm2 | no data |
| Maximum core temperature | 71 °C | no data |
| Number of transistors | 1,200 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
| P0 Vcore voltage | Min: 1.225 V - Max: 1.3875 V | no data |
Compatibility
Information on FX-4300 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.
| 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 FX-4300 and Phenom II X3 P840. 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) |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| VirusProtect | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by FX-4300 and Phenom II X3 P840 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by FX-4300 and Phenom II X3 P840. 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 | On certain motherboards (Chipset feature) | no data |
Peripherals
Specifications and connection of peripherals supported by FX-4300 and Phenom II X3 P840.
| PCIe version | n/a | no data |
Pros & cons summary
| Performance score | 1.95 | 0.86 |
| Recency | 23 October 2012 | 4 October 2010 |
| Physical cores | 4 | 3 |
| Threads | 4 | 3 |
| Chip lithography | 32 nm | 45 nm |
| Power consumption (TDP) | 95 Watt | 25 Watt |
FX-4300 has a 126.7% higher aggregate performance score, an age advantage of 2 years, 33.3% more physical cores and 33.3% more threads, and a 40.6% more advanced lithography process.
Phenom II X3 P840, on the other hand, has 280% lower power consumption.
The FX-4300 is our recommended choice as it beats the Phenom II X3 P840 in performance tests.
Note that FX-4300 is a desktop processor while Phenom II X3 P840 is a notebook one.
Should you still have questions on choice between FX-4300 and Phenom II X3 P840, ask them in Comments section, and we shall answer.
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