Performance per price, higher is better.
Phenom II X2 550 vs Core 2 Duo E8400
Aggregated performance score
Core 2 Duo E8400
2008
2 cores / 2 threads
0.76
General info
Comparing Core 2 Duo E8400 and Phenom II X2 550 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2521 | 2527 |
| Place by popularity | not in top-100 | not in top-100 |
| Value for money | 1.86 | 3.55 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Wolfdale (2008−2010) | Callisto (2009−2010) |
| Release date | 1 January 2008 (16 years old) | November 2009 (14 years old) |
| Launch price (MSRP) | no data | $133 |
| Current price | $70 | $26 (0.2x MSRP) |
Value for money
Phenom II X2 550 has 91% better value for money than Core 2 Duo E8400.
Technical specs
Core 2 Duo E8400 and Phenom II X2 550 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) | 2 (Dual-core) |
| Threads | 2 | 2 |
| Base clock speed | 3 GHz | no data |
| Boost clock speed | 3 GHz | 3.1 GHz |
| L1 cache | 64 KB (per core) | 128 KB (per core) |
| L2 cache | 6 MB (shared) | 512 KB (per core) |
| L3 cache | 0 KB | 6 MB (shared) |
| Chip lithography | 45 nm | 45 nm |
| Die size | 104 mm2 | 258 mm2 |
| Maximum core temperature | 72 °C | no data |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 410 million | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Duo E8400 and Phenom II X2 550 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 | 80 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo E8400 and Phenom II X2 550. 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 E8400 and Phenom II X2 550 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 E8400 and Phenom II X2 550 are enumerated here.
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Phenom II X2 550. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, 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 Core 2 Duo E8400 and Phenom II X2 550.
| PCIe version | 2.0 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 68%
Core 2 Duo E8400 outperforms Phenom II X2 550 by 1% in Passmark.
Advantages and disadvantages
| Power consumption (TDP) | 65 Watt | 80 Watt |
We couldn't decide between Core 2 Duo E8400 and Phenom II X2 550. The differences in performance seem too small.
Should you still have questions on choice between Core 2 Duo E8400 and Phenom II X2 550, ask them in Comments section, and we shall answer.
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