Help with wattage calculations.

[dnut_00]

Hi.

As I've been contemplating several variations to my build, I've came to conclusion that my wattage calculations should be revised.

This is the result as provided by pcpartpicker.com

but this ASUS Power Calculator gets me into 600W from the get go.

I was considering this:

SeaSonic SSP-650RT

WDYT?

 

[thedosbox]

The estimated wattage on pcpartpicker is correct. Worst case scenario, assume all of that needs to be on the 12V rail.

This would be a better choice than that OEM model: http://www.newegg.com/Product/Produc...82E16817151119

 

[dnut_00]

That's what I thought.

If you don't mind me asking - why is your PSU better?

Also, do I even need 650W? The build is listed at 425W. Will this increase under load and "burn" 550W PSU? Or is the 425W the max already (it seems from the table that it is)?

 

[thedosbox]

That's what I thought.

If you don't mind me asking - why is your PSU better?

It's rated at an operating temperature up to 50C, and was well reviewed by jonnyguru.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=323

In comparison, the OEM unit doesn't specify the operating temperature. Instead, it just indicates a MTBF calculation based on a 25C ambient temperature.

Also, do I even need 650W? The build is listed at 425W. Will this increase under load and "burn" 550W PSU? Or is the 425W the max already (it seems from the table that it is)?

That 425W number is a maximum that assumes every single component will be running at 100% power draw. The chances of this happening in real life will be very close to zero. The 550W unit will give you some headroom in the event that you want to upgrade.

 

[dnut_00]

Thank you.

I've semi-decided to go with G-650W, though.

 

[thedosbox]

Thank you.

I've semi-decided to go with G-650W, though.

Fair enough, the Seasonic's G & X series PSU's have good reputations.

 

[dnut_00]

I have a possible bundle for FD Define R4 + FSP Aurum 700W Gold for equivalent of about $180 (doing some currency exchange here).

I think that would be better, no?

 

[TemjinGold]

No.

 

[dnut_00]

No, as in - not better for that price or no, that PSU sucks (which I am pretty certain it does not)?

 

[Meghan54]

I don't think the Aurum is a junk power supply, but given its price, it's outclassed by the Seasonic G-650. The Seasonic has better voltage regulation, better ripple/noise suppression, and better build quality (better soldering, better capacitor choices in the secondary section, where it counts---instead of Chinese caps used by FSP in the Aurum, the Seasonic uses all Japanese caps, etc.)

I'd pay the little extra for the Seasonic.

 

[Johnny4]

First convert milliamps into amps mA / 1000
Now multiply amps with volts A x V this will give your answer in watts

Power = Amps x Volts