Intel Xeon X3470 vs Core i5 661 |
Released September, 2009
Intel Xeon X3470
- 2.93 GHz
- Quad core
Reasons to buy the Intel Xeon X3470
 | More l3 cache 8 MB | | Significantly lower typical power consumption 77.19W |
| | Supports trusted computing Yes | | More cores 4 |
VS
Released January, 2010
Intel Core i5 661
- 3.33 GHz
- Dual core
Reasons to buy the Core i5 661
| | Much better performance per dollar 3.72 pt/$ | | Has a built-in GPU Yes |
| | Much newer manufacturing process 32 nm | | Higher clock speed 3.33 GHz |
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Differences What are the advantages of each
| |||||||
| More l3 cache | 8 MB | vs | 4 MB | 2x more l3 cache; more data can be stored in the l3 cache for quick access later | |||
|---|---|---|---|---|---|---|---|
| Significantly lower typical power consumption | 77.19W | vs | 99.55W | More than 20% lower typical power consumption | |||
| Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
| More cores | 4 | vs | 2 | Twice as many cores; run more applications at once | |||
| More threads | 8 | vs | 4 | Twice as many threads | |||
| Better PassMark score | 5,195 | vs | 3,184 | Around 65% better PassMark score | |||
| Much lower annual home energy cost | 22.89 $/year | vs | 36.95 $/year | Around 40% lower annual home energy cost | |||
| Significantly better overclocked clock speed (Water) | 4.39 GHz | vs | 3.33 GHz | More than 30% better overclocked clock speed (Water) | |||
| Lower annual commercial energy cost | 83.22 $/year | vs | 96.71 $/year | Around 15% lower annual commercial energy cost | |||
| |||||||
| Much better performance per dollar | 3.72 pt/$ | vs | 0.4 pt/$ | More than 9.2x better performance per dollar | |||
| Has a built-in GPU | Yes | vs | No | Somewhat common; A separate graphics adapter is not required | |||
| Much newer manufacturing process | 32 nm | vs | 45 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
| Higher clock speed | 3.33 GHz | vs | 2.93 GHz | Around 15% higher clock speed | |||
| Significantly better performance per watt | 5.96 pt/W | vs | 1.43 pt/W | Around 4.2x better performance per watt | |||
| More l2 cache per core | 0.5 MB/core | vs | 0.25 MB/core | 2x more l2 cache per core | |||
| Better overclocked clock speed (Air) | 4.66 GHz | vs | 3.96 GHz | Around 20% better overclocked clock speed (Air) | |||
| Newer | Jan, 2010 | vs | Sep, 2009 | Release date 3 months later | |||
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Benchmarks Real world tests of Xeon X3470 vs Core i5 661
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 X3470 | vs | Core i5 661 |
|---|---|---|---|
| Clock speed | 2.93 GHz | 3.33 GHz | |
| Turbo clock speed | 3.6 GHz | 3.6 GHz | |
| Cores | Quad core | Dual core | |
| Socket type | |||
| LGA 1156 | |||
features | |||
| Has a NX bit | Yes | Yes | |
| Supports trusted computing | Yes | No | |
| Has virtualization support | Yes | Yes | |
| Instruction set extensions | |||
| SSE2 | |||
| MMX | |||
| SSE4 | |||
| SSE3 | |||
| SSE | |||
| SSE4.1 | |||
| SSE4.2 | |||
| Supplemental SSE3 | |||
| AES | |||
| Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
| TDP | 95W | 87W | |
| Annual home energy cost | 22.89 $/year | 36.95 $/year | |
| Annual commercial energy cost | 83.22 $/year | 96.71 $/year | |
| Performance per watt | 1.43 pt/W | 5.96 pt/W | |
| Typical power consumption | 77.19W | 99.55W | |
bus | |||
| Architecture | DMI | DMI | |
| Number of links | 1 | 1 | |
| Transfer rate | 2,500 MT/s | 2,500 MT/s | |
details | Xeon X3470 | vs | Core i5 661 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 8 | 4 | |
| L2 cache | 1 MB | 1 MB | |
| L2 cache per core | 0.25 MB/core | 0.5 MB/core | |
| L3 cache | 8 MB | 4 MB | |
| L3 cache per core | 2 MB/core | 2 MB/core | |
| Manufacture process | 45 nm | 32 nm | |
| Transistor count | 774,000,000 | 382,000,000 | |
| Max CPUs | 1 | 1 | |
| Clock multiplier | 22 | 25 | |
| Voltage range | 0.65 - 1.4V | 0.65 - 1.4V | |
| Operating temperature | Unknown - 72.7°C | Unknown - 69.8°C | |
overclocking | |||
| Overclocked clock speed | 3.96 GHz | 4.66 GHz | |
| Overclocked clock speed (Water) | 4.39 GHz | 3.33 GHz | |
| Overclocked clock speed (Air) | 3.96 GHz | 4.66 GHz | |
integrated graphics | |||
| GPU | None | GPU | |
| Label | N/A | Intel® HD Graphics | |
| Number of displays supported | N/A | 2 | |
| GPU clock speed | N/A | 900 MHz | |
memory controller | |||
| Memory controller | Built-in | Built-in | |
| Memory type | |||
| DDR3-1333 | |||
| DDR3-1066 | |||
| DDR3-800 | |||
| DDR3 | |||
| Channels | Dual Channel | Dual Channel | |
| Maximum bandwidth | 21,333.32 MB/s | 21,333.32 MB/s | |
| Maximum memory size | 32,768 MB | 16,773.12 MB | |
 Intel Xeon X3470  Report a correction |  Intel Core i5 661 Report a correction |
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