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[irpersian20]

Hi
The use of high power maybe damage to the parts system(for exmaple graphic card and cpu ...)?
For example, the requirement is 330 watts., But power is 580 watts
Less than twenty percent of the total capacity of power if it is used
Power is Hot,
Energy rises,
12 V DC with more swing to the other parts to be delivered

Thanks

 

[Harvey]

The capacity of a power supply should be based on the worst case maximum the system is expected to draw. With anything less, the system can be expected to crash under peak demand.

A PSU that is rated at 580 watts does not produce that amount of power full time. The rating means only that can deliver that amount of power on demand. It consumes far less power when idling or when the system requires less than maximum power.

The power dissipated as heat at any given instant is primarily dependent on the amount of power required at any given moment and the efficiency of the supply at that particular amount of power. The efficiency of contemporary high efficiency PSU's (> 80% efficiency rating) is somewhat less when idling or under lower demand, but under no circumstances is a PSU dissipating the full difference between its rated capacity and the power actually being used as heat.

 

[irpersian20]

Thank you for your reply,
For example The Maximum requirement my system is 300 watts.
But 530 watts to install power on system.
Does the problem occur?
Or no problem?

 

[Harvey]

A 580 watt supply would be overkill in a system that you know for sure requires only 330 watts, but there's no reason it shouldn't work very well. At most, you may burn a couple of extra watts, depending on its efficiency at the operating point of your system, but you won't be dissipating a lot of extra heat.

On the other hand, if you decide to upgrade your system, you will have plenty of power available to support a much more demanding video card and/or CPU, an extra hard drive or two, or any other peripheral you decide to add later.

Hope that helps.