HAHAHAHA!
Seriously though, I agree with everyone here. The 680 and 780 (and I'd imagine 650) are "play your cards right" chipsets. Overall stability is critically dependant on other components in your system, specifically the CPU and memory, not on whether they are faulty, but simply on what they are, they should all work, but they don't

. In my experience, the 680 slowly killed memory that,
by default, required a voltage of 2.2 or greater, even when active cooling was used!!!!
I can't deem Nvidia guilty beyond reasonable doubt here, as Micron went through an extremely dodgy period with their D9GMH chips, many of which seem to have perished on Intel boards under similar circumstances, though the 680 really did appear to make it into an art, I lost 4 pairs of DDR2 without once running outside the manufacturer's spec.
As far as running Quad core CPUs, both chipsets were a bit of a joke, stable overclocking was nigh on impossible.
The 780 was supposed to support Yorkfield CPUs out of the box, though I could only ever achieve full stability when the multiplier was forced to x11 with the FSB at 1066, and this was at stock speed!!!!

The PCI-E 1.1-to-2.0 bridge chip (the result of a desperate rush by Nvidia) ran hotter than the sun and on some boards was integrated just below the top PCI-E slot, meaning that if a large video card was installed - a likely scenario - it was trapped directly behind that card's heat sink with absolutely no room for the heat to disperse. The Northbridge too was stupidly hot, often topping 90 degrees despite abundant airflow.
Essentially, the only good things I've heard are from those running dual core CPUs with low voltage, high latency memory (nearly always 2 sticks as opposed to four) and numerous atypical BIOS tweaks.
For the record, it took me 2x Striker Extremes, 2x Striker 2 Formulas and one P5N-T Deluxe to find all this out the hard way.
Thanks for a good laugh

.