Looking for a 24/7 200W Power Supply

[bennyd87708]

Hi, for a file storage pc I'm making, I need a power supply that can do at least 200 watts 24/7 with the lowest price on my electric bill (high efficiency). I'm looking at continuous atx psus such as: http://www.amazon.com/dp/B00H33SFJU/?tag=xov-20 and high rated normal psus such as: http://www.amazon.com/dp/B008XEYT5M/?tag=pcpapi-20 What would be better for running 24/7, and what would be better on electric bill? If you have any suggestions, please let me know, thanks.

 

[DonkeyOatie]

You are looking for good stable power, but not a high-performance system (a small tractor, not a small race-car) so a Gold or Platinum PSU from even Tier 4, but preferably Tier 3 would do. The usual high-performance capacitors required for gaming use are not needed.

http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html?56899a751e42e=reload

If you are in the USA, the difference between bronze and titanium will not really cost very much at all at low power levels (less than a light bulb)

Seasonic makes a good 300W TFX PSU, if it will work for you.

 

[bennyd87708]

You are looking for good stable power, but not a high-performance system (a small tractor, not a small race-car) so a Gold or Platinum PSU from even Tier 4, but preferably Tier 3 would do. The usual high-performance capacitors required for gaming use are not needed.

http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html?56899a751e42e=reload

If you are in the USA, the difference between bronze and titanium will not really cost very much at all at low power levels (less than a light bulb)

Seasonic makes a good 300W TFX PSU, if it will work for you.

So will this power supply run well 24/7, and will my power bill suffer more than using a gold rated psu such as this?

 

[DonkeyOatie]

Yes. The Bronze/Gold rating is for efficiency. The EVGA is an 80Plus, so is guaranteed to provide 80% efficiency at any load. In your case, you would be about 50% load, 200W from a 430W PSU and 80% efficiency means that to get your 200W, the PSU will draw 250W from the wall (Wasting 50W, a small light bulb)

The Gold rated PSU has an efficiency of 90% at 50% load. Your 200W would be a little bit bigger because it is a 350W PSU, so that PSU would draw about 225W from the wall. The difference between the two PSUs is about 25 W in saving, so about 600W/hrs per day.

 

[bennyd87708]

Yes. The Bronze/Gold rating is for efficiency. The EVGA is an 80Plus, so is guaranteed to provide 80% efficiency at any load. In your case, you would be about 50% load, 200W from a 430W PSU and 80% efficiency means that to get your 200W, the PSU will draw 250W from the wall (Wasting 50W, a small light bulb)

The Gold rated PSU has an efficiency of 90% at 50% load. Your 200W would be a little bit bigger because it is a 350W PSU, so that PSU would draw about 225W from the wall. The difference between the two PSUs is about 25 W in saving, so about 600W/hrs per day.

So the gold one would save money on electric bill, but which will last longer running 24/7?

 

[DonkeyOatie]

Both PSUs are good for 24/7 at the loads you want. Seasonic tends to make a better product and is its own OEM, but 'how long will it last' is an exercise in population statistics. both PSUs should last for many years.