CPU clock speed for 2645 and 2646 series

I looked for the clock speeds of the CPUs for 2645 and 2646 series at the IBM website but could not find them.  Is there a pdf file which contains the above info, or a way to look for the clock speed for a given p/n?  Could anyone help?

Visit this page:
 http://www-307.ibm.com/pc/support/site.wss/homeLen​ovo.do?country=us
Input the 7-character model number and watch the history unfold...
Hope this helps.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

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