Yes, I have tested it (Beta Bios 1004.014), it works and is stable (prime95 and Sandra burn-in simultaneously for 8 hours).
My 1.8A on the P4B533-V is now running at FSB=143 (2.57GHz, 1.65v, 55 C under load, standard cooling) with the memory at 3:4 (190MHz, 2.65v, 2.5-3-3-6, Turbo).
CL2 still...