Later 2007 might have given you a 2nd generation core2 (kentsfield), but afaik the laptop processors there never reached 3.0 GHz.
So either you have something really weird and exotic, or you got your dates wrong.
It was a DELL Inspiron 9100. This link shows the specs... 3.2Ghz.
http://uk.pcmag.com/dell-inspiron-9100/28273/review/dell-inspiron-9100and here it shows that there was even a 3.4Ghz option.
http://www.notebookreview.com/news/dell-releases-new-inspiron-9100-pics/I ordered it with 2GB RAM, then later upgraded it myself to 4GB - supported or not the RAM upgrade worked. I spoke to my wife, and she believes I bought it somewhere around 2003/2004.
Either way, it was the best laptop I have ever owned!
On a side note:
I was brilliantly designed too. At the time I did contracting work and commuted on my motorcycle. Every
two weeks or so the graphics would go buggy. I eventually figure out that it was the graphics module that
shook loose because of the bumpy motorcycle trips. I then travelled with a single screwdriver to strip, reseat
and put back together for the next two weeks. Yup, you only needed a single screwdriver to remove every
single component from that laptop. Brilliant design! Compare that to days shit Apple Macbook Pro's that
can't even be opened or serviced with normal tools, and they don't even have a Kensington lock!! So how
are you supposed to secure your laptop at your work place, coffee shop, library etc.