Your FSB speed needs to be increased from 100MHz to 166MHz:
166MHz x 11 (fixed) = 1.84GHz/2500+
You may need to do this on your board rather than in your BIOS because board settings always over-ride anything you can alter in the BIOS. The reason it is running slower is as a safety precaution when using new CPU's.
Not sure about your RAM problem at the moment.
-------------------------
. AMD CPU Data:
http://www.tomshardware.com/20.../amd...ult/page23.html &
http://www.amdboard.com/amdid.html. Belarc Advisor:
http://www.belarc.com/free_download.html. GPU Comparison for Laptops: <a href="
http://www.notebookche