Intel Core2 Quad Q9400S vs Q8400S |
Released January, 2009
Intel Core2 Quad Q9400S
- 2.66 GHz
- Quad core
Reasons to buy the Intel Core2 Quad Q9400S
 | Supports trusted computing Yes |
VS
Released April, 2009
Intel Core2 Quad Q8400S
- 2.66 GHz
- Quad core
Reasons to buy the Q8400S
| | Newer Apr, 2009 |
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VS
Differences What are the advantages of each
| |||||||
| Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
|---|---|---|---|---|---|---|---|
| |||||||
| Newer | Apr, 2009 | vs | Jan, 2009 | Release date 3 months later | |||
Report a correction
Features Key features of the Core2 Quad Q9400S vs Q8400S
clock speed
L2 cache
overclocked clock speed (air)
overclocked clock speed (water)
TDP
Specifications Full list of technical specs
summary | Core2 Quad Q9400S | vs | Q8400S |
|---|---|---|---|
| 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 | 65W | 65W | |
| Annual home energy cost | 15.66 $/year | 15.66 $/year | |
| Annual commercial energy cost | 56.94 $/year | 56.94 $/year | |
| Typical power consumption | 52.81W | 52.81W | |
bus | |||
| Architecture | FSB | FSB | |
| Number of links | 1 | 1 | |
| Clock speed | 1,333 MHz | 1,333 MHz | |
details | Core2 Quad Q9400S | vs | Q8400S |
|---|---|---|---|
| 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 - 76.3°C | Unknown - 76.3°C | |
overclocking | |||
| Overclocked clock speed | 2.67 GHz | 2.67 GHz | |
| Overclocked clock speed (Water) | 2.67 GHz | 2.67 GHz | |
| Overclocked clock speed (Air) | 2.67 GHz | 2.67 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 Q9400S  Report a correction |  Intel Core2 Quad Q8400S Report a correction |
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