need some advice to O/C my P4 570J (3.8ghz)

[lascar]

:confused: hello ive o/c my p4 up too 4.26 ghz with ddr400 (pc3200) corsair stick ram cas 3 (3.3.8.3)...my fsb is set to 900 mzh ....so 225*19=4.275mhz...and the ram speed is about 452 mhz...can i go faster with ddr or i have 2 buy some ddrII (like 533 or 600 mhz) to sky this limit! sry for english level im foreign people! thx 4 all!!!!! wait 4 some advices!

p4 570 J@4.27 ghz
asus P5gdc deluxe
ram corsair pc 3200 cas3 (2.6V)@ 452mhz
antec 550W power
creative adigy 2 zS
X850 XT PE @590/632 (flashed and no artifacts :D thx atitool beta.11)
Wide screen 190X5+ (v2.0) 10 ms

[giorgos th.]

if your motherboard supports ddrII take them yes.
if not you wold have to pay a lot for some faaast ddrI sticks.