Phenom II X4 955 BE vs Phenom X3 8400
Primary details
Comparing Phenom X3 8400 and Phenom II X4 955 BE processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2670 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | 0.73 | no data |
| Architecture codename | Toliman (2008) | Deneb (2009−2011) |
| Release date | March 2008 (16 years ago) | 23 April 2009 (15 years ago) |
Detailed specifications
Phenom X3 8400 and Phenom II X4 955 BE 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 |
| Base clock speed | no data | 3.2 GHz |
| Boost clock speed | 2.1 GHz | 3.2 GHz |
| L1 cache | 128 KB (per core) | 128 KB (per core) |
| L2 cache | 512 KB (per core) | 512 KB (per core) |
| L3 cache | 2 MB (shared) | 6 MB (shared) |
| Chip lithography | 65 nm | 45 nm |
| Die size | 285 mm2 | 258 mm2 |
| Number of transistors | 450 million | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Phenom X3 8400 and Phenom II X4 955 BE 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 | 1 |
| Socket | AM2+ | AM3 |
| Power consumption (TDP) | 95 Watt | 125 Watt |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom X3 8400 and Phenom II X4 955 BE are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom X3 8400 and Phenom II X4 955 BE. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Phenom X3 8400 and Phenom II X4 955 BE.
| PCIe version | no data | 2.0 |
Pros & cons summary
| Physical cores | 3 | 4 |
| Threads | 3 | 4 |
| Chip lithography | 65 nm | 45 nm |
| Power consumption (TDP) | 95 Watt | 125 Watt |
Phenom X3 8400 has 31.6% lower power consumption.
Phenom II X4 955 BE, on the other hand, has 33.3% more physical cores and 33.3% more threads, and a 44.4% more advanced lithography process.
We couldn't decide between Phenom X3 8400 and Phenom II X4 955 BE. We've got no test results to judge.
Should you still have questions on choice between Phenom X3 8400 and Phenom II X4 955 BE, ask them in Comments section, and we shall answer.
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