Westmere CPU series
| Processor series | Processor no. | Clock speed | L3 cache | Number of cores | Power | QPI link speed | DDR3 Memory |
|---|---|---|---|---|---|---|---|
| 5600 series | X5680 | 3.33Ghz | 12MB | 6 | 130W | 6.4GT/s | 1333MHz |
| X5677 | 3.46Ghz | 12MB | 4 | 130W | 6.4GT/s | 1333MHz | |
| x5670 | 2.93Ghz | 12MB | 6 | 95W | 6.4GT/s | 1333MHz | |
| x5667 | 3.06Ghz | 12MB | 4 | 95W | 6.4GT/s | 1333MHz | |
| x5660 | 2.8Ghz | 12MB | 6 | 95W | 6.4GT/s | 1333MHz | |
| x5650 | 2.66Ghz | 12MB | 6 | 95W | 6.4GT/s | 1333MHz | |
| E5645 | 2.40Ghz | 12MB | 6 | 95W | 5.86GT/s | 1066MHz | |
| E5630 | 2.53Ghz | 12MB | 4 | 80W | 5.86GT/s | 1066MHz | |
| E5620 | 2.40Ghz | 12MB | 4 | 80W | 5.86GT/s | 1066MHz |
Clock speed with high number does not always mean the better
We must evaluate the combination of Clock Speed, FSB and Cache. Point of product is the number of the FSB (Front Side Bus) and Cache. The higher the number, the better performance. And Cache 2Mx2 is better than Cache 4M. 4Mx2 is better.
CPU's performance is not judged by Clock Speed.
