Winner
Intel Core2 Duo E8400
CPUBoss recommends the Intel Core2 Duo E8400 based on its single-core performance and overclocking.
See full details Intel Core2 Duo E8400 vs AMD Phenom X4 9550 |
Released January, 2008
Intel Core2 Duo E8400
- 3 GHz
- Dual core
3.8 Out of 10
Reasons to buy the Intel Core2 Duo E8400
 | Much higher clock speed 3 GHz | | Much better PassMark (Single core) score 1,251 |
| | Much newer manufacturing process 45 nm | | Much better overclocked clock speed (Air) 4.22 GHz |
VS
Released March, 2008
AMD Phenom X4 9550
- 2.2 GHz
- Quad core
3.4 Out of 10
Reasons to buy the AMD Phenom X4 9550
| | More cores 4 | | More threads 4 |
CPUBoss Review Our evaluation of E8400 vs 9550 among desktop CPUs
Performance | |
Benchmark performance using all cores | |
| PCMark 8 Home 3.0 Accelerated, PassMark and 1 more | |
Single-core Performance | |
Individual core benchmark performance | |
| PassMark (Single Core), Geekbench 3 Single Core and 1 more | |
Integrated Graphics | |
Integrated GPU performance for graphics | |
| Fire Strike | |
Integrated Graphics (OpenCL) | |
Integrated GPU performance for parallel computing | |
| CompuBench 1.5 Bitcoin mining and 4 more | |
Performance per Watt | |
How efficiently does the processor use electricity? | |
| Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more | |
Value | |
Are you paying a premium for performance? | |
| Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more | |
| 3.8 | CPUBoss Score |
Combination of all six facets | |
 | Winner |
Cast your vote Do you agree or disagree with CPUBoss?
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Differences What are the advantages of each
| |||||||
| Much higher clock speed | 3 GHz | vs | 2.2 GHz | More than 35% higher clock speed | |||
|---|---|---|---|---|---|---|---|
| Much better PassMark (Single core) score | 1,251 | vs | 758 | More than 65% better PassMark (Single core) score | |||
| Much newer manufacturing process | 45 nm | vs | 65 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
| Much better overclocked clock speed (Air) | 4.22 GHz | vs | 2.77 GHz | More than 50% better overclocked clock speed (Air) | |||
| Much better performance per watt | 1.83 pt/W | vs | 1.11 pt/W | More than 65% better performance per watt | |||
| Much more l2 cache per core | 3 MB/core | vs | 0.5 MB/core | 6x more l2 cache per core | |||
| Much lower typical power consumption | 52.81W | vs | 77.19W | More than 30% lower typical power consumption | |||
| Higher Maximum operating temperature | 72.4 °C | vs | 70 °C | Around 5% higher Maximum operating temperature | |||
| Much better overclocked clock speed (Water) | 4.23 GHz | vs | 3.05 GHz | Around 40% better overclocked clock speed (Water) | |||
| Significantly lower annual home energy cost | 15.66 $/year | vs | 22.89 $/year | More than 30% lower annual home energy cost | |||
| Significantly lower annual commercial energy cost | 56.94 $/year | vs | 83.22 $/year | More than 30% lower annual commercial energy cost | |||
| |||||||
| More cores | 4 | vs | 2 | Twice as many cores; run more applications at once | |||
| More threads | 4 | vs | 2 | Twice as many threads | |||
Report a correction
Benchmarks Real world tests of Core2 Duo E8400 vs Phenom X4 9550
GeekBench 3 (Multi-core) Data courtesy Primate Labs
GeekBench 3 (Single core) Data courtesy Primate Labs
GeekBench 3 (AES single core) Data courtesy Primate Labs
GeekBench (32-bit) Data courtesy Primate Labs
GeekBench (64-bit) Data courtesy Primate Labs
GeekBench
PassMark Data courtesy Passmark
PassMark (Single Core)
Specifications Full list of technical specs
summary | Core2 Duo E8400 | vs | Phenom X4 9550 |
|---|---|---|---|
| Clock speed | 3 GHz | 2.2 GHz | |
| Cores | Dual core | Quad core | |
| Socket type | |||
| LGA 775 | |||
| AM2+ | |||
features | |||
| Has a NX bit | Yes | Yes | |
| Has virtualization support | Yes | Yes | |
| Instruction set extensions | |||
| SSE4a | |||
| SSE2 | |||
| MMX | |||
| SSE3 | |||
| SSE | |||
| SSE4.1 | |||
| 3DNow! | |||
| Supplemental SSE3 | |||
| Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
| TDP | 65W | 95W | |
| Annual home energy cost | 15.66 $/year | 22.89 $/year | |
| Annual commercial energy cost | 56.94 $/year | 83.22 $/year | |
| Performance per watt | 1.83 pt/W | 1.11 pt/W | |
| Typical power consumption | 52.81W | 77.19W | |
details | Core2 Duo E8400 | vs | Phenom X4 9550 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 2 | 4 | |
| L2 cache | 6 MB | 2 MB | |
| L2 cache per core | 3 MB/core | 0.5 MB/core | |
| Manufacture process | 45 nm | 65 nm | |
| Max CPUs | 1 | 1 | |
| Operating temperature | Unknown - 72.4°C | Unknown - 70°C | |
overclocking | |||
| Overclocked clock speed | 4.22 GHz | 2.77 GHz | |
| Overclocked clock speed (Water) | 4.23 GHz | 3.05 GHz | |
| Overclocked clock speed (Air) | 4.22 GHz | 2.77 GHz | |
integrated graphics | |||
| GPU | None | None | |
| Label | N/A | N/A | |
| Latest DirectX | N/A | N/A | |
| Number of displays supported | N/A | N/A | |
| GPU clock speed | N/A | N/A | |
| Turbo clock speed | N/A | N/A | |
| 3DMark06 | N/A | N/A | |
bus | |||
| Clock speed | 1,333 MHz | 1,800 MHz | |
 Intel Core2 Duo E8400  Report a correction |  AMD Phenom X4 9550 Report a correction |
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