Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Pentium Pro
Table title:
Available models
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Clock </th><th colspan=1 rowspan=1 > Bus </th><th colspan=1 rowspan=1 > L2 Cache </th><th colspan=1 rowspan=1 > Max TDP </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 150 MHz </td><td class="highlighted"  colspan=1 rowspan=1 > 60 MHz </td><td colspan=1 rowspan=1 > 256 KB </td><td colspan=1 rowspan=1 > 29.2 W </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 166 MHz </td><td class="highlighted"  colspan=1 rowspan=1 > 66 MHz </td><td colspan=1 rowspan=1 > 512 KB </td><td colspan=1 rowspan=1 > 35 W </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 180 MHz </td><td class="highlighted"  colspan=1 rowspan=1 > 60 MHz </td><td colspan=1 rowspan=1 > 256 KB </td><td colspan=1 rowspan=1 > 31.7 W </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 200 MHz </td><td class="highlighted"  colspan=1 rowspan=1 > 66 MHz </td><td colspan=1 rowspan=1 > 256 KB </td><td colspan=1 rowspan=1 > 35 W </td></tr>
<tr> <td colspan=1 rowspan=1 > 200 MHz </td><td colspan=1 rowspan=1 > 66 MHz </td><td colspan=1 rowspan=1 > 512 KB </td><td colspan=1 rowspan=1 > 37.9 W </td></tr>
<tr> <td colspan=1 rowspan=1 > 200 MHz </td><td colspan=1 rowspan=1 > 66 MHz </td><td colspan=1 rowspan=1 > 1024 KB </td><td colspan=1 rowspan=1 > 44 W </td></tr>
</table>
Question:
How fast was the Pentium Pro?
Answer:
Pentium Pro clock speeds were 150, 166, 180 or 200 MHz with a 60 or 66 MHz external bus clock.