Does higher or under wattage power supply damage my components

[JustanakedDude]

The topic says its all, so here what i got so far

Intel Core i5 4690K 3.5GHz
Asus Z97-Pro Gamer
Asus Geforce GTX970 Strix OC 4GB
Corsair Vengeance 8GB ( planning of adding an extra later but not soon)
Western Digital Blue 1TB 7200RPM
Corsair H100i Hydro Cooler
SSD 240 *2( might add another one later)

Planning of getting a FSP Aurum S 600W 80+ Gold or FSP Aurum PT 650W 80+ Platinum Modular. so is 600-650 watts enough and what if i buy a 800W(what if i upgrade my system :SLI,Watercooling,etc.) will it blow up my system and what if i really need 700w for the system and bought myself a 500w,what might happen to my components

 

[marlonc98]

Oversupplying your system causes no pain to it. I have a similar build to yours, with an i7, the 4790k. I use a bronze certified 750w psu and I run into no trouble. Undersupplying will cause instability and crashes. I think a 650-750 will be a good margin considering future upgrades. Your build is pretty power efficient. The GTX 970 and the Haswell CPU are both very very power efficient.

 

[bootcher]

The psu will only provide what your system needs, for example when you are only typing a document it will provide ~100 watt that is needed, when you are running a heavy benchmark the psu will provide the ~400 watt the computer needs. So even though a 1000 watt psu is overkill it will not damage the components.

When you have a psu that cannot provide enough power for your system you might end up damaging components, though usually you will only have crashes/system instability/power failure when running certain heavy load programs/games, because when starting up the pc it only needs a small amount of power to run and stay idle.

For your system that 600 watt psu will be enough.

 

[JustanakedDude]

oh i get it, so whats the advantage of 80+ Gold and 80+ Platinum

 

[marlonc98]

The efficiency of the psu. Basically you'll be paying less on your electric bills depending on which. Obviously platinum is better than gold so it wastes less electricity. But the difference is not substantial imo unless you're running high wattage or servers.