Phenom II X4 955 (125W) vs Core 2 Duo E4400
Primary Details
Comparing Core 2 Duo E4400 and Phenom II X4 955 (125W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Allendale (2006−2009) | Deneb (2009−2011) |
| Release date | July 2007 (16 years ago) | April 2009 (15 years ago) |
| Current price | $48 | $30 |
Detailed Specifications
Core 2 Duo E4400 and Phenom II X4 955 (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 |
| Base clock speed | 2 GHz | no data |
| Boost clock speed | 2 GHz | 3.2 GHz |
| L1 cache | 64 KB | 128 KB (per core) |
| L2 cache | 2 MB | 512 KB (per core) |
| L3 cache | 0 KB | 6 MB (shared) |
| Chip lithography | 65 nm | 45 nm |
| Die size | 111 mm2 | 258 mm2 |
| Maximum core temperature | L2=61 °C, M0=73 °C | no data |
| Number of transistors | 167 million | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | 0.85V-1.5V | no data |
Compatibility
Information on Core 2 Duo E4400 and Phenom II X4 955 (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 | LGA775 | AM3 |
| Power consumption (TDP) | 65 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo E4400 and Phenom II X4 955 (125W). You'll probably need this information if you require some particular technology.
| AES-NI | - | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | no data |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
| Status | Discontinued | no data |
Security technologies
Core 2 Duo E4400 and Phenom II X4 955 (125W) technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo E4400 and Phenom II X4 955 (125W) are enumerated here.
| VT-x | - | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E4400 and Phenom II X4 955 (125W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR3 |
Pros & Cons Summary
| Physical cores | 2 | 4 |
| Threads | 2 | 4 |
| Chip lithography | 65 nm | 45 nm |
| Power consumption (TDP) | 65 Watt | 125 Watt |
We couldn't decide between Core 2 Duo E4400 and Phenom II X4 955 (125W). We've got no test results to judge.
Should you still have questions on choice between Core 2 Duo E4400 and Phenom II X4 955 (125W), ask them in Comments section, and we shall answer.
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