Phenom X4 9950 BE (125W) vs Athlon 64 X2 6400+ BE
Primary details
Comparing Athlon 64 X2 6400+ BE and Phenom X4 9950 BE (125W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Windsor (2006−2007) | Agena (2007−2008) |
| Release date | August 2007 (17 years ago) | October 2008 (16 years ago) |
Detailed specifications
Athlon 64 X2 6400+ BE and Phenom X4 9950 BE (125W) 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 | 2 (Dual-core) | 4 (Quad-Core) |
| Threads | 2 | 4 |
| Boost clock speed | 3.2 GHz | 2.6 GHz |
| L1 cache | 256 KB | 128 KB (per core) |
| L2 cache | 1 MB | 512 KB (per core) |
| L3 cache | 0 KB | 2 MB (shared) |
| Chip lithography | 90 nm | 65 nm |
| Die size | 230 mm2 | 285 mm2 |
| Number of transistors | 227 million | 450 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | + |
Compatibility
Information on Athlon 64 X2 6400+ BE and Phenom X4 9950 BE (125W) 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 | AM2+ |
| Power consumption (TDP) | 125 Watt | 125 Watt |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon 64 X2 6400+ BE and Phenom X4 9950 BE (125W) are enumerated here.
| AMD-V | - | + |
Pros & cons summary
| Physical cores | 2 | 4 |
| Threads | 2 | 4 |
| Chip lithography | 90 nm | 65 nm |
Phenom X4 9950 BE (125W) has 100% more physical cores and 100% more threads, and a 38.5% more advanced lithography process.
We couldn't decide between Athlon 64 X2 6400+ BE and Phenom X4 9950 BE (125W). We've got no test results to judge.
Should you still have questions on choice between Athlon 64 X2 6400+ BE and Phenom X4 9950 BE (125W), ask them in Comments section, and we shall answer.
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