Intel Core2 Quad Q9650 vs Duo E8400 |
Released August, 2008
Intel Core2 Quad Q9650
- 3 GHz
- Quad core
- Unlocked
Reasons to buy the Intel Core2 Quad Q9650
 | More cores 4 | | More threads 4 |
| | Newer Aug, 2008 |
VS
Released January, 2008
Intel Core2 Duo E8400
- 3 GHz
- Dual core
Reasons to buy the Duo E8400
| | Much lower typical power consumption 52.81W | | Better overclocked clock speed (Air) 4.22 GHz |
| | Significantly lower annual home energy cost 15.66 $/year | | Significantly lower annual commercial energy cost 56.94 $/year |
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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 | |||
| Newer | Aug, 2008 | vs | Jan, 2008 | Release date 7 months later | |||
| |||||||
| Much lower typical power consumption | 52.81W | vs | 77.19W | More than 30% lower typical power consumption | |||
| Better overclocked clock speed (Air) | 4.22 GHz | vs | 4.15 GHz | Almost the same | |||
| Significantly lower annual home energy cost | 15.66 $/year | vs | 22.89 $/year | More than 30% lower annual home energy cost | |||
| Significantly lower annual commercial energy cost | 56.94 $/year | vs | 83.22 $/year | More than 30% lower annual commercial energy cost | |||
| Higher Maximum operating temperature | 72.4 °C | vs | 71.4 °C | Almost the same | |||
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Benchmarks Real world tests of Core2 Quad Q9650 vs Duo E8400
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 Q9650 | vs | Duo E8400 |
|---|---|---|---|
| Clock speed | 3 GHz | 3 GHz | |
| Cores | Quad core | Dual core | |
| Socket type | |||
| LGA 775 | |||
features | |||
| Has a NX bit | Yes | Yes | |
| Supports trusted computing | Yes | 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 | 95W | 65W | |
| Annual home energy cost | 22.89 $/year | 15.66 $/year | |
| Annual commercial energy cost | 83.22 $/year | 56.94 $/year | |
| Performance per watt | 1.47 pt/W | 1.83 pt/W | |
| Typical power consumption | 77.19W | 52.81W | |
bus | |||
| Architecture | FSB | FSB | |
| Number of links | 1 | 1 | |
| Clock speed | 1,333 MHz | 1,333 MHz | |
details | Core2 Quad Q9650 | vs | Duo E8400 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 4 | 2 | |
| L2 cache | 12 MB | 6 MB | |
| L2 cache per core | 3 MB/core | 3 MB/core | |
| Manufacture process | 45 nm | 45 nm | |
| Transistor count | 820,000,000 | 410,000,000 | |
| Max CPUs | 1 | 1 | |
| Clock multiplier | 9 | 9 | |
| Voltage range | 0.85 - 1.36V | 0.85 - 1.36V | |
| Operating temperature | Unknown - 71.4°C | Unknown - 72.4°C | |
overclocking | |||
| Overclocked clock speed | 4.15 GHz | 4.22 GHz | |
| Overclocked clock speed (Water) | 4.25 GHz | 4.23 GHz | |
| Overclocked clock speed (Air) | 4.15 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 Q9650  Report a correction |  Intel Core2 Duo E8400 Report a correction |
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