Intel Xeon L5408 vs Core2 Quad Q9400 |
Released February, 2008
Intel Xeon L5408
- 2.13 GHz
- Quad core
Reasons to buy the Intel Xeon L5408
 | Much more l2 cache 12 MB | | Much more l2 cache per core 3 MB/core |
| | Much lower typical power consumption 32.5W | | Supports more CPUs in SMP configuration 2 |
VS
Released July, 2008
Intel Core2 Quad Q9400
- 2.66 GHz
- Quad core
Reasons to buy the Core2 Quad Q9400
| | Higher clock speed 2.66 GHz | | Supports trusted computing Yes |
| | Much better performance per dollar 0.72 pt/$ | | Slightly better geekbench 3 single core score 1,490 |
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| |  | Intel Core2 Quad Q9400CPUBoss Winner |
Differences What are the advantages of each
| |||||||
| Much more l2 cache | 12 MB | vs | 6 MB | 2x more l2 cache; more data can be stored in the l2 cache for quick access later | |||
|---|---|---|---|---|---|---|---|
| Much more l2 cache per core | 3 MB/core | vs | 1.5 MB/core | 2x more l2 cache per core | |||
| Much lower typical power consumption | 32.5W | vs | 77.19W | 2.4x lower typical power consumption | |||
| Supports more CPUs in SMP configuration | 2 | vs | 1 | Twice as many CPUs in SMP configuration | |||
| Better geekbench 3 Multi-Core score | 6,095 | vs | 5,123 | Around 20% better geekbench 3 Multi-Core score | |||
| Better performance per watt | 3.41 pt/W | vs | 1.51 pt/W | More than 2.2x better performance per watt | |||
| Much lower annual home energy cost | 9.64 $/year | vs | 22.89 $/year | 2.4x lower annual home energy cost | |||
| Much lower annual commercial energy cost | 35.04 $/year | vs | 83.22 $/year | 2.4x lower annual commercial energy cost | |||
| |||||||
| Higher clock speed | 2.66 GHz | vs | 2.13 GHz | Around 25% higher clock speed | |||
| Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
| Much better performance per dollar | 0.72 pt/$ | vs | 0.28 pt/$ | More than 2.5x better performance per dollar | |||
| Slightly better geekbench 3 single core score | 1,490 | vs | 1,324 | Around 15% better geekbench 3 single core score | |||
| Better overclocked clock speed (Air) | 3.54 GHz | vs | 3.34 GHz | More than 5% better overclocked clock speed (Air) | |||
| Newer | Jul, 2008 | vs | Feb, 2008 | Release date 4 months later | |||
Report a correction
Benchmarks Real world tests of Xeon L5408 vs Core2 Quad Q9400
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
PassMark Data courtesy Passmark
PassMark (Single Core)
Specifications Full list of technical specs
summary | Xeon L5408 | vs | Core2 Quad Q9400 |
|---|---|---|---|
| Clock speed | 2.13 GHz | 2.66 GHz | |
| Cores | Quad core | Quad core | |
| Socket type | |||
| LGA 771 | |||
| LGA 775 | |||
features | |||
| Has a NX bit | Yes | Yes | |
| Supports trusted computing | No | 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 | 40W | 95W | |
| Annual home energy cost | 9.64 $/year | 22.89 $/year | |
| Annual commercial energy cost | 35.04 $/year | 83.22 $/year | |
| Performance per watt | 3.41 pt/W | 1.51 pt/W | |
| Typical power consumption | 32.5W | 77.19W | |
bus | |||
| Architecture | FSB | FSB | |
| Number of links | 1 | 1 | |
| Clock speed | 1,066 MHz | 1,333 MHz | |
details | Xeon L5408 | vs | Core2 Quad Q9400 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 4 | 4 | |
| L2 cache | 12 MB | 6 MB | |
| L2 cache per core | 3 MB/core | 1.5 MB/core | |
| Manufacture process | 45 nm | 45 nm | |
| Transistor count | 820,000,000 | 456,000,000 | |
| Max CPUs | 2 | 1 | |
| Clock multiplier | 8 | 8 | |
| Voltage range | 0.85 - 1.35V | 0.85 - 1.36V | |
| Operating temperature | Unknown - 72°C | Unknown - 71.4°C | |
overclocking | |||
| Overclocked clock speed | 3.34 GHz | 3.54 GHz | |
| Overclocked clock speed (Water) | 4.12 GHz | 4.15 GHz | |
| Overclocked clock speed (Air) | 3.34 GHz | 3.54 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 Xeon L5408  Report a correction |  Intel Core2 Quad Q9400 Report a correction |
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