Lpc2000

Does anybody has exeriences with LPC2106 over-clocking ?

I would like to feed a color display as fast as possible (means
transfer of a complete image). I believe I did everything one can do
to speed the function up which is doing the transfer to the display.
(PLL 60MHz, assembler routine in RAM, VPB 1:1, MAM fully enabled,
etc.)
But it seems it is not quite fast enough.

So I had the idea to improve the transfer time by a higher clock, just
for for the transfer, not generally.

I would like to know if anybody did it already and how long it would
take to lock the PLL?

Thanks