I said "droop". it wasn't a misspelling or typo. Google it.
I did. And found you're wrong. "Droop" is defined as the normal (Wikipedia defines it as "intentional") voltage drop that results from V = V(idle) - I/R. That is certainly not what we have here. If you exceed the maximum output of a power supply, its voltage starts to drop (in a non-linear way), not droop.
lok what are you talking about? The TDP for a GTX260 is about 180 for the 65nm ones and 170 for the 55nm ones, no where near the 300 that you think it takes. I put his specs into the PSU calculator, not including his fans, with 25% capacitor aging and it came out to slightly less than 400 which is about what i expected.
The average person has no need for more than a 750W PSU, a good 750 will power 2 high end cards with no problem, 850s are needed for 3 card setups, and 1kWs are usually for quad Fire or quad SLI.
What you are getting james, is exactly what jsc said, its called voltage droop, or v-droop, the voltage that you set a CPU to is not the voltage that it will run at, that is the max voltage it can run at, as long as it is still stable when the voltage droops you are alright, if its not then you may want to consider a motherboard with better voltage control or just bumping the voltage up a tiny bit higher.
You're right in principle with your comment about what typical systems need. However, here we have a Q6600, which is pretty power-hungry, and 260's that eat 590W between the two of them. Whether you prefer to refer to voltage drop or droop - the point remains that if you overload your PSU, the mobo can't do a thing to keep voltage levels from falling too low.
1. That is wattage at the wall, so only about 80% of that is actually being used by the computer, or about 236 watts.
2. That is also the power being used by the processor and every other component in the system.
3. What that actually proves is that a 450 watt PSU is more than enough for a significantly more power hungry system than what he has, they were running a QX9770 in that system.
Power charts have subtleties that you have to be aware of when reading them, some of them arent acknowledged by the author, like the efficiency of the PSU meaning that power results scale non linearly.