Intel Core2 Quad Q9400 vs Q8400 |
Released July, 2008
Intel Core2 Quad Q9400
- 2.66 GHz
- Quad core
3.9 Out of 10
Reasons to buy the Intel Core2 Quad Q9400
 | Supports trusted computing Yes |
by Legit Reviews (Mar, 2009)When it comes to benchmarks, the overclocked Intel Core 2 Quad Q9400 processor was able to complete the benchmark just as fast as the Intel Core i7 940 processor, which is wicked fast.
VS
CPUBoss Review Our evaluation of Q9400 vs Q8400 among desktop CPUs (over 75W)
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 | |
No winner declared
Too close to call
Cast your vote Do you agree or disagree with CPUBoss?
VS
Differences What are the advantages of each
| |||||||
| Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
|---|---|---|---|---|---|---|---|
| |||||||
| CPUBoss is not aware of any important advantages of the Q8400 vs the Q9400. | |||||||
Report a correction
Benchmarks Real world tests of Core2 Quad Q9400 vs Q8400
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 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 | 3.46 GHz | |
| Overclocked clock speed (Water) | 4.16 GHz | 3.91 GHz | |
| Overclocked clock speed (Air) | 3.54 GHz | 3.46 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  Report a correction |  Intel Core2 Quad Q8400 Report a correction |
Follow us
Compare
Related Comparisons
 | VS |  |
| $200 | ||
| Q6600 vs Q9400 | ||
 | VS | |
| $148 | $200 | |
| E8400 vs Q9400 | ||
 | VS | |
| $287 | $200 | |
| Q9550 vs Q9400 | ||
 | VS | |
| $150 | $200 | |
| 2100 vs Q9400 | ||
| | VS |  |
| $179 | ||
| Q6600 vs Q8400 | ||
| | VS | |
| $148 | $179 | |
| E8400 vs Q8400 | ||
 | VS | |
| $125 | $179 | |
| 3220 vs Q8400 | ||
Popular Comparisons
 | VS |  |
| $281 | ||
| 7th Gen A9-9410 vs 6200U | ||
 | VS | |
| $281 | ||
| 7th Gen A9-9420 vs 6200U | ||
 | VS |  |
| $300 | $305 | |
| 2500 vs W3520 | ||
 | VS |  |
| $350 | ||
| 7th Gen A12-9700P vs 6700K | ||
| | VS |  |
| $350 | $272 | |
| 6700K vs 4790K | ||
 | VS |  |
| $281 | ||
| N4200 vs 6100U | ||
 | VS | |
| $281 | ||
| 7th Gen A6-9220 vs 6200U | ||
