Originally Posted by
Phaedrus2129;13043729
Difference is a quality 750W would run SLI 470s with ease. Yours will either shut off or die with that type of load.
IIRC the X-Finity series weren't too bad. The LSP and X2 series are the real stinkers, though there are mediocre units all through their lineup.
Which would you rather trust a $1000 worth of components to?
This?
Or this?
Consider that a crap PSU usually can't do its rated wattage, has an anemic +12V capacity so is effectively rated even lower, usually have less comprehensive protection sets and don't shut down as safely when they fail... Also consider the use of lower quality parts that degrade much quicker and may fail outright, not to mention the higher DOA and early failure rates due to poor build quality... Plus the fact that out of spec voltage and ripple can damage components, as can poor startup transient spikes. Plus the electricity wasted by inefficient power supplies, and the issues a lack of PFC can cause (no PFC can make a 400W load look like a 700-800W load to your circuit breaker--don't put your PC and the microwave on the same circuit, eh?).
Not all budget PSUs are terrible. But there is a definite difference between a quality power supply and a not quality one. Yes you get diminishing returns past a certain point; but that point is way, way above the Ultra LSP series.