Given the parts your are running, 650 watts shouldn't be enought to run stable at standard speeds, let alone oc'in. The choice of mobo could have been better too! I'd recommend you upgrade to a 800 watt ps and a better mobo. Tip on oc'in 6800ee's you need to raise the voltage of the "MCH" and "FSB" up .1. Forcing the PCI-E to 100 mhz will also help to keep things stable. Make sure your ram set so that it doesn't exceed it's rated limit by more than 5 or 10 percent. But really you NEED more wattage to do anything!
his power supply is sufficient if its a good 650 watt (it seems it is not however). and you will not need to up the voltage to overclock a conroe. most reports are that with little or no overvolting is needed for any modest overclock. and we are seeing people blow past 10% overclocks with stock cooling, with good cooling you could easily see a 30% overclock on that beast. i would suggest a better PSU, but instead of just buying more watts, look at the PSU and look at the total amps on the 12 volt rails, then look at what Nvidia recommends for the 8800GTX but look for amps, not watts. because that is what is holding you back power wise. then dont skimp on price, get a good $150-$200+ PSU. that and a better motherboard is not necessary at all. you have an unlocked chip. meaning you can just up the multiplier when overclocking. almost any motherboard on the planet supports at least changing the multiplier (even if your proccessor only allows lowering it). i would consider getting another motherboard if you find yours lacks more intricate BIOS options that you otherwise desired.
and as i read along, to what other people have posted,
ram speeds are irrelevant, completely so, ok, there is no freaking point in overclocking ram other then wanting to burn it out, you don't NEED it to run at DDR800+ if your just gaming you can settle for a lower multiplier and have it end up like 756 odd mhz, and it will not have any performance impact at all. but is is kinda a mute issue because you can just up your procs multiplier without messing with the FSB.
"Also I'd like to add that while the NForce4/5 Intel boards are complete duds for FSB overclocking, they CAN hit somewhat high CPU clock speeds only if you adjust the CPU multiplier. Try that before you ditch the P5N32 SLI-Deluxe."
this is partially true, mostly that you will succeed better with upping the multiplier, however i have an Nforce4 SLI chipset, and i have no problems getting it to at least 300mhz at all. (a multiplier of 10 (dropped from 11) on my 3700, resulting in a stable 3 ghz, as well as some overvolting)
"you might also want to check what speed your ram is reported to be running at within windows as i hear many mobos set the voltage too low for them and they default to a lower speed check too see what voltage yours require i think your best bet would also to read Wusy's guide(if you havnt already) its very informative."
this is true, and the thing he is referring to is called vcore shift, and motherboards do it in conjunction with throttling the multiplier to reduce heat and power consumption when a computer is idling, altho many motherboards do not do a good job of it.
thats about it. if it was me, i would read wusy's guide, and mess around some more, (no point throwing out a good motherboard if its just a matter of being uninformed) then possibly buy a new one, that has been reviewed and you can confirm that it has the overclocking features you desire. and check my PSU, your main problem probably lies with that.
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