The P3V4X is very finicky about slotkets. I'd ONLY advise using an Asus S370-133 ot S370-DL on that board. With such a slotket, the cB0 P3-700Es tend to hit 933 MHz with air cooling and little or no vltage changes.
I run a P3-700E (week 20 flipchip from Malaysia, retail, cB0 stepping) on my P3V4X with an Asus S370-133. My processor's running all day every day @ 1035 MHz thanks to 80-watt Peltier module (a TE Dist. ICE-74) and no-reservoir watercooling. (Processor temp is 5-7 deg. C at all times, and in Windows 2000 with its built-in HLT-on-idle the temp drops to -12 deg. C if I don't run something like SETI@home in the background!)
oO