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| Intel Core2 Quad Q9400 vs Q8400 |
Released July, 2008
Intel Core2 Quad Q9400
- 2.66 GHz
- Quad core
Reasons to buy the Intel Core2 Quad Q9400
![]() | Supports trusted computing Yes |
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Differences What are the advantages of each
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Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
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CPUBoss is not aware of any important advantages of the Q8400 vs the Q9400. | |||||||
Benchmarks Real world tests of Core2 Quad Q9400 vs Q8400
GeekBench 3 (Multi-core) Data courtesy Primate Labs
Core2 Quad Q9400
5,123
Core2 Quad Q8400
5,035
GeekBench 3 (Single core) Data courtesy Primate Labs
Core2 Quad Q9400
1,490
Core2 Quad Q8400
1,465
GeekBench 3 (AES single core) Data courtesy Primate Labs
Core2 Quad Q9400
114,000 MB/s
Core2 Quad Q8400
113,900 MB/s
GeekBench (32-bit) Data courtesy Primate Labs
Core2 Quad Q9400
4,796
Core2 Quad Q8400
4,623
GeekBench (64-bit) Data courtesy Primate Labs
Core2 Quad Q9400
4,951
Core2 Quad Q8400
5,191
GeekBench
Core2 Quad Q9400
6,513
Core2 Quad Q8400
6,816
PassMark Data courtesy Passmark
Core2 Quad Q9400
3,379
Core2 Quad Q8400
3,197
PassMark (Single Core)
Core2 Quad Q9400
1,130
Core2 Quad Q8400
1,126
Specifications Full list of technical specs
summary | Core2 Quad Q9400 | vs | Q8400 |
---|---|---|---|
Clock speed | 2.66 GHz | 2.66 GHz | |
Cores | Quad core | Quad 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 | 95W | 95W | |
Annual home energy cost | 22.89 $/year | 51.39 $/year | |
Annual commercial energy cost | 83.22 $/year | 130.79 $/year | |
Performance per watt | 1.51 pt/W | 0.94 pt/W | |
Typical power consumption | 77.19W | 135.97W | |
bus | |||
Architecture | FSB | FSB | |
Number of links | 1 | 1 | |
Clock speed | 1,333 MHz | 1,333 MHz |
details | Core2 Quad Q9400 | vs | Q8400 |
---|---|---|---|
Architecture | x86-64 | x86-64 | |
Threads | 4 | 4 | |
L2 cache | 6 MB | 4 MB | |
L2 cache per core | 1.5 MB/core | 1 MB/core | |
Manufacture process | 45 nm | 45 nm | |
Transistor count | 456,000,000 | 456,000,000 | |
Max CPUs | 1 | 1 | |
Clock multiplier | 8 | 8 | |
Voltage range | 0.85 - 1.36V | 0.85 - 1.36V | |
Operating temperature | Unknown - 71.4°C | Unknown - 71.4°C | |
overclocking | |||
Overclock popularity | 34 | 29 | |
Overclocked clock speed | 3.54 GHz | 3.48 GHz | |
Overclocked clock speed (Water) | 4.15 GHz | 3.91 GHz | |
Overclocked clock speed (Air) | 3.54 GHz | 3.48 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 Q9400 ![]() | Intel Core2 Quad Q8400 ![]() |
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