Intel Pentium 4 661 vs Core2 Duo E8400 |
Released January, 2006
Intel Pentium 4 661
- 3.6 GHz
- Single core
Reasons to buy the Intel Pentium 4 661
 | Much higher clock speed 3.6 GHz | | Much better overclocked clock speed (Air) 4.55 GHz |
| | Much better overclocked clock speed (Water) 5.04 GHz |
VS
Released January, 2008
Intel Core2 Duo E8400
- 3 GHz
- Dual core
Reasons to buy the Core2 Duo E8400
| | Much higher Maximum operating temperature 72.4 °C | | Much newer manufacturing process 45 nm |
| | More cores 2 | | Has virtualization support Yes |
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Differences What are the advantages of each
| |||||||
| Much higher clock speed | 3.6 GHz | vs | 3 GHz | More than 20% higher clock speed | |||
|---|---|---|---|---|---|---|---|
| Much better overclocked clock speed (Air) | 4.55 GHz | vs | 4.22 GHz | Around 10% better overclocked clock speed (Air) | |||
| Much better overclocked clock speed (Water) | 5.04 GHz | vs | 4.23 GHz | Around 20% better overclocked clock speed (Water) | |||
| |||||||
| Much higher Maximum operating temperature | 72.4 °C | vs | 1 °C | Around 72.5x higher Maximum operating temperature | |||
| Much newer manufacturing process | 45 nm | vs | 65 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
| More cores | 2 | vs | 1 | Twice as many cores; run more applications at once | |||
| Has virtualization support | Yes | vs | No | Somewhat common; Boosts performance of virtual machines | |||
| Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
| Significantly lower typical power consumption | 52.81W | vs | 69.88W | Around 25% lower typical power consumption | |||
| Significantly lower annual home energy cost | 15.66 $/year | vs | 20.72 $/year | Around 25% lower annual home energy cost | |||
| Significantly lower annual commercial energy cost | 56.94 $/year | vs | 75.34 $/year | Around 25% lower annual commercial energy cost | |||
| Newer | Jan, 2008 | vs | Jan, 2006 | Release date over 2 years later | |||
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Features Key features of the Pentium 4 661 vs Core2 Duo E8400
clock speed
L2 cache
overclocked clock speed (air)
overclocked clock speed (water)
TDP
Specifications Full list of technical specs
summary | Pentium 4 661 | vs | Core2 Duo E8400 |
|---|---|---|---|
| Clock speed | 3.6 GHz | 3 GHz | |
| Cores | Single core | Dual core | |
| Socket type | |||
| LGA 775 | |||
features | |||
| Has a NX bit | Yes | Yes | |
| Supports trusted computing | No | Yes | |
| Has virtualization support | No | Yes | |
| Instruction set extensions | |||
| SSE2 | |||
| MMX | |||
| SSE3 | |||
| SSE | |||
| SSE4.1 | |||
| Supplemental SSE3 | |||
| Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
| TDP | 86W | 65W | |
| Annual home energy cost | 20.72 $/year | 15.66 $/year | |
| Annual commercial energy cost | 75.34 $/year | 56.94 $/year | |
| Typical power consumption | 69.88W | 52.81W | |
bus | |||
| Architecture | FSB | FSB | |
| Number of links | 1 | 1 | |
| Clock speed | 800 MHz | 1,333 MHz | |
details | Pentium 4 661 | vs | Core2 Duo E8400 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 2 | 2 | |
| L2 cache | 2 MB | 6 MB | |
| L2 cache per core | 2 MB/core | 3 MB/core | |
| Manufacture process | 65 nm | 45 nm | |
| Transistor count | 188,000,000 | 410,000,000 | |
| Max CPUs | 1 | 1 | |
| Clock multiplier | 18 | 9 | |
| Voltage range | 1.2 - 1.34V | 0.85 - 1.36V | |
| Operating temperature | Unknown - 1°C | Unknown - 72.4°C | |
overclocking | |||
| Overclocked clock speed | 4.55 GHz | 4.22 GHz | |
| Overclocked clock speed (Water) | 5.04 GHz | 4.23 GHz | |
| Overclocked clock speed (Air) | 4.55 GHz | 4.22 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 | |
 Intel Pentium 4 661  Report a correction |  Intel Core2 Duo E8400 Report a correction |
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