Thx for the tips and the link.
I know this board, but this one has 1.5 year, to clock old cpu's and it's hard to find mod informations still online since 2003
Mine do 1.61v with 1.7v bios, old BH5 synchro with 3.7v vdimm,270.4mhz valid now, 273mhz but corrupted file.
Lot of insulation, dod on chipset, watercool on the cpu, hope it survive...