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| Intel Core2 Quad Q6700 vs Duo E8400 |
Released July, 2007
Intel Core2 Quad Q6700
- 2.66 GHz
- Quad core
Reasons to buy the Intel Core2 Quad Q6700
![]() | More cores 4 | ![]() | More threads 4 |
VS
Released January, 2008
Intel Core2 Duo E8400
- 3 GHz
- Dual core
Reasons to buy the Duo E8400
![]() | Much newer manufacturing process 45 nm | ![]() | Higher clock speed 3 GHz |
![]() | Much lower typical power consumption 52.81W | ![]() | Supports trusted computing Yes |
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Differences What are the advantages of each
| |||||||
More cores | 4 | vs | 2 | Twice as many cores; run more applications at once | |||
---|---|---|---|---|---|---|---|
More threads | 4 | vs | 2 | Twice as many threads | |||
| |||||||
Much newer manufacturing process | 45 nm | vs | 65 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
Higher clock speed | 3 GHz | vs | 2.66 GHz | Around 15% higher clock speed | |||
Much lower typical power consumption | 52.81W | vs | 85.31W | Around 40% lower typical power consumption | |||
Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
Much better overclocked clock speed (Air) | 4.22 GHz | vs | 3.65 GHz | More than 15% better overclocked clock speed (Air) | |||
Much higher Maximum operating temperature | 72.4 °C | vs | 62.2 °C | More than 15% higher Maximum operating temperature | |||
Much lower annual commercial energy cost | 56.94 $/year | vs | 91.98 $/year | Around 40% lower annual commercial energy cost | |||
Much lower annual home energy cost | 15.66 $/year | vs | 25.29 $/year | Around 40% lower annual home energy cost | |||
Significantly better overclocked clock speed (Water) | 4.23 GHz | vs | 3.7 GHz | Around 15% better overclocked clock speed (Water) |
Benchmarks Real world tests of Core2 Quad Q6700 vs Duo E8400
GeekBench 3 (Multi-core) Data courtesy Primate Labs
Core2 Quad Q6700
4,901
Core2 Duo E8400
2,982
GeekBench 3 (Single core) Data courtesy Primate Labs
Core2 Quad Q6700
1,425
Core2 Duo E8400
1,625
GeekBench 3 (AES single core) Data courtesy Primate Labs
Core2 Quad Q6700
113,900 MB/s
Core2 Duo E8400
128,000 MB/s
GeekBench (32-bit) Data courtesy Primate Labs
Core2 Quad Q6700
4,661
Core2 Duo E8400
2,826
GeekBench (64-bit) Data courtesy Primate Labs
Core2 Quad Q6700
5,096
Core2 Duo E8400
3,092
GeekBench
Core2 Quad Q6700
6,127
Core2 Duo E8400
4,794
PassMark Data courtesy Passmark
Core2 Quad Q6700
3,309
Core2 Duo E8400
2,160
PassMark (Single Core)
Core2 Quad Q6700
1,031
Core2 Duo E8400
1,251
Specifications Full list of technical specs
summary | Core2 Quad Q6700 | vs | Duo E8400 |
---|---|---|---|
Clock speed | 2.66 GHz | 3 GHz | |
Cores | Quad core | Dual core | |
Socket type | |||
LGA 775 | |||
features | |||
Has a NX bit | Yes | Yes | |
Supports trusted computing | No | Yes | |
Has virtualization support | Yes | Yes | |
Instruction set extensions | |||
SSE2 | |||
MMX | |||
SSE3 | |||
SSE | |||
SSE4.1 | |||
Supplemental SSE3 | |||
Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
TDP | 105W | 65W | |
Annual home energy cost | 25.29 $/year | 15.66 $/year | |
Annual commercial energy cost | 91.98 $/year | 56.94 $/year | |
Performance per watt | 1.2 pt/W | 1.83 pt/W | |
Typical power consumption | 85.31W | 52.81W | |
bus | |||
Architecture | FSB | FSB | |
Number of links | 1 | 1 | |
Clock speed | 1,066 MHz | 1,333 MHz |
details | Core2 Quad Q6700 | vs | Duo E8400 |
---|---|---|---|
Architecture | x86-64 | x86-64 | |
Threads | 4 | 2 | |
L2 cache | 8 MB | 6 MB | |
L2 cache per core | 2 MB/core | 3 MB/core | |
Manufacture process | 65 nm | 45 nm | |
Transistor count | 582,000,000 | 410,000,000 | |
Max CPUs | 1 | 1 | |
Clock multiplier | 10 | 9 | |
Voltage range | 0.85 - 1.5V | 0.85 - 1.36V | |
Operating temperature | Unknown - 62.2°C | Unknown - 72.4°C | |
overclocking | |||
Overclock popularity | 18 | 125 | |
Overclocked clock speed | 3.65 GHz | 4.22 GHz | |
Overclocked clock speed (Water) | 3.7 GHz | 4.23 GHz | |
Overclocked clock speed (Air) | 3.65 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 Core2 Quad Q6700 ![]() | Intel Core2 Duo E8400 ![]() |
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