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| Intel Core2 Duo E8400 vs E6400 |
Released January, 2008
Intel Core2 Duo E8400
- 3 GHz
- Dual core
Reasons to buy the Intel Core2 Duo E8400
![]() | Much higher clock speed 3 GHz | ![]() | Much better PassMark score 2,160 |
![]() | Much better geekbench 2 (32-bit) score 2,826 | ![]() | Much newer manufacturing process 45 nm |
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Differences What are the advantages of each
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Much higher clock speed | 3 GHz | vs | 2.13 GHz | More than 40% higher clock speed | |||
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Much better PassMark score | 2,160 | vs | 1,295 | More than 65% better PassMark score | |||
Much better geekbench 2 (32-bit) score | 2,826 | vs | 1,961 | Around 45% better geekbench 2 (32-bit) 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 | 3.33 GHz | More than 25% better overclocked clock speed (Air) | |||
Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
Much higher Maximum operating temperature | 72.4 °C | vs | 61.4 °C | Around 20% higher Maximum operating temperature | |||
Much better overclocked clock speed (Water) | 4.23 GHz | vs | 3.33 GHz | More than 25% better overclocked clock speed (Water) | |||
Newer | Jan, 2008 | vs | Jul, 2006 | Release date over 1 years later | |||
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CPUBoss is not aware of any important advantages of the E6400 vs the E8400. | |||||||
Benchmarks Real world tests of Core2 Duo E8400 vs E6400
GeekBench 3 (Multi-core) Data courtesy Primate Labs
Core2 Duo E8400
2,982
Core2 Duo E6400
2,071
GeekBench 3 (Single core) Data courtesy Primate Labs
Core2 Duo E8400
1,625
Core2 Duo E6400
1,133
GeekBench 3 (AES single core) Data courtesy Primate Labs
Core2 Duo E8400
128,000 MB/s
Core2 Duo E6400
91,000 MB/s
GeekBench (32-bit) Data courtesy Primate Labs
Core2 Duo E8400
2,826
Core2 Duo E6400
1,961
GeekBench (64-bit) Data courtesy Primate Labs
Core2 Duo E8400
3,092
Core2 Duo E6400
2,126
GeekBench
Core2 Duo E8400
4,794
Core2 Duo E6400
3,267
PassMark Data courtesy Passmark
Core2 Duo E8400
2,160
Core2 Duo E6400
1,295
PassMark (Single Core)
Core2 Duo E8400
1,251
Core2 Duo E6400
801
Specifications Full list of technical specs
summary | Core2 Duo E8400 | vs | E6400 |
---|---|---|---|
Clock speed | 3 GHz | 2.13 GHz | |
Cores | Dual core | Dual core | |
Socket type | |||
LGA 775 | |||
features | |||
Has a NX bit | Yes | Yes | |
Supports trusted computing | Yes | No | |
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 | 65W | 65W | |
Annual home energy cost | 15.66 $/year | 15.66 $/year | |
Annual commercial energy cost | 56.94 $/year | 56.94 $/year | |
Performance per watt | 1.83 pt/W | 1.35 pt/W | |
Typical power consumption | 52.81W | 52.81W | |
bus | |||
Architecture | FSB | FSB | |
Number of links | 1 | 1 | |
Clock speed | 1,333 MHz | 1,066 MHz |
details | Core2 Duo E8400 | vs | E6400 |
---|---|---|---|
Architecture | x86-64 | x86-64 | |
Threads | 2 | 2 | |
L2 cache | 6 MB | 2 MB | |
L2 cache per core | 3 MB/core | 1 MB/core | |
Manufacture process | 45 nm | 65 nm | |
Transistor count | 410,000,000 | 167,000,000 | |
Max CPUs | 1 | 1 | |
Clock multiplier | 9 | 8 | |
Voltage range | 0.85 - 1.36V | 0.85 - 1.5V | |
Operating temperature | Unknown - 72.4°C | Unknown - 61.4°C | |
overclocking | |||
Overclock popularity | 125 | 15 | |
Overclocked clock speed | 4.22 GHz | 3.33 GHz | |
Overclocked clock speed (Water) | 4.23 GHz | 3.33 GHz | |
Overclocked clock speed (Air) | 4.22 GHz | 3.33 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 Duo E8400 ![]() | Intel Core2 Duo E6400 ![]() |
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