3.6Ghz is easy on a 9x multi

first water cool your cpu and NB
set LDT to 4x
I managed 3.6Ghz in two ways
linked & unlinked

linked
synced
QDR 1600
mem 400

unlinked
QDR1600
ram 1000

now the voltage settings
vcore that worked best for me was 1.48125
2.17V for linked setting 2.275V for unlinked on the ram ( this depends on what your ram needs)
1.2v HT 1.50
1.55V NB
1.50-1.55V on the SB
cpu VTT 1.55