My 5400+ BE easily reached 3.2G on air cooling, using a Zalman 9700
Vcore = 1.4250v allows a 16X multi if FSB is default @ 200Mhz
CPU Freq = 200
CPU Multi = 16X
HT = 1G
Pci-E = 100
Need to set your specific DDR2 settings manually including slot voltage, [See Manufacturer specs]
Note to Share FYI: Black Edition CPUs are Unlocked Multiplier CPUs, as was the previous Socket 939FX series of which I've previously owned an FX57 single core and a FX60 dual core, my experience with OCing unlocked multis is if you raise the FSB your OC will not be as high and Stable as if you leave the FSB at its stock setting and just raise the multiplier, keeping the HT in its prospective 1G window and your machine stable.
There is no need to increase the FSB to attain a higher OC with an unlocked multiplier, you just need to keep the CPU cool and raise the Vcore as needed to get the system stable at whatever higher multiplier you use.
I've had my 5400+ at 3.4G on air but that required a 1.500v Vcore, and produced too high of temps to continue running on air, thus I dropped it back to 3.2, however anyone water cooling should easily reach the 17X multi for a 3.4 result and keep the system cool enough.
There are tried and true methods for OCing AMD CPUs, however the raising FSB and HT does not yield rock solid stable results, when raising an AMD CPU past its normal default multiplier, you can always lower the multiplier and raise the FSB, but why the crap would you do that with an unlocked multiplier???
And also stay away from .5 multiplier settings, increase in whole number intervals.
My 2 cents! Ryan