It would be cool if we had the core to pin layout of the chip. Not sure but we might be able to find other frequency's then just 200,266,333..... 300 would be good for me 😀
Since you asked nicely:
===============================
BSEL2--BSEL1--BSEL0-- FSB
--------------------------------
0--------0-------0------266.67
0--------0-------1------133.33
0--------1-------0------200.00
0--------1-------1------166.67
1--------0-------0------333.33
1--------0-------1------100.00
1--------1-------0------400.00
1--------1-------1------Res e r v e d
These are all the possible combinations. 1,1,1 is not known at this time, and I don't believe anyone has really ever tried the 100fsb pinmod (anyone wanna try 100 fsb for fun? My Asrock 775i65G does not use BSEL pins to pull up FSB, so these pinmods are useless to me. Be the first kid on your block with a 900MHz E4300!).
If you want to try for a 300 fsb pinmod, 1,1,1 would be your best shot. It's probably either 300fsb, or maybe 233 fsb; I really doubt there is anything higher than 400fsb.