Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| model | Speed (GHz) | L3 Cache (MB) | QPI speed (GT/s) | DDR3 Clock (MHz) | TDP (W) | Cores | Threads | Turbo-Boost |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| W3503 | 2.40 | 4.0 | 4.8 | 1066.0 | 130.0 | 2.0 | 2.0 | No |
| W3505 | 2.53 | 4.0 | 4.8 | 1066.0 | 130.0 | 2.0 | 2.0 | No |
| W3520 | 2.66 | 8.0 | 4.8 | 1066.0 | 130.0 | 4.0 | 8.0 | Yes |
| W3530 | 2.80 | 8.0 | 4.8 | 1066.0 | 130.0 | 4.0 | 8.0 | Yes |
| W3540 | 2.93 | 8.0 | 4.8 | 1066.0 | 130.0 | 4.0 | 8.0 | Yes |
| W3550 | 3.06 | 8.0 | 4.8 | 1066.0 | 130.0 | 4.0 | 8.0 | Yes |
| W3565 | 3.20 | 8.0 | 4.8 | 1066.0 | 130.0 | 4.0 | 8.0 | Yes |
| W3570 | 3.2 | 8.0 | 6.4 | 1333.0 | 130.0 | 4.0 | 8.0 | Yes |
Question:
How many entries have a speed of exactly 2.53 GHz?
Answer:
1.0