Why buy expensive PSU

[yurano]

and keep in mind that some quality companies are going to sell their stuff under another name just to get rid of it... i myself bought an arctic cooling r550 f or something similiar which actually is an seasonic psu... so there are cheap sales on quality stuff

Seasonic is a well known OEM that makes a PSUs for a whole slew of companies. I have a feeling that the R550 is built off of one of Seasonic's first platforms before they became the go-to PSU OEM.

The R550 is rated for 550W but is only rated for 408W on the 12V rail. The R550 is also not 80+ certified.

When's the last time Seasonic made a non 80+ certified PSU?

Source: http://realhardtechx.com/index_archivos/Page834.htm

[Deleted]

Seasonic is a well known OEM that makes a PSUs for a whole slew of companies. I have a feeling that the R550 is built off of one of Seasonic's first platforms before they became the go-to PSU OEM.

The R550 is rated for 550W but is only rated for 408W on the 12V rail. The R550 is also not 80+ certified.

When's the last time Seasonic made a non 80+ certified PSU?

Source: http://realhardtechx.com/index_archivos/Page834.htm

it is actually a 80+ psu that just doesnt have the official certifikation

[MasterNewbie]

calso a good rule of thumb for choosing a psu: use an online calculator to figure out your computers watt usage. take that number and double it. all the citifications i talk about above are based off 50% load.

Don't do this. At most you will want an extra 10% over what a calculator suggests, beyond that, you are wasting watts. The certifications are based on 30%, 50%, and 80% load.

Most calculators already include headroom (to account for low-quality PSUs); if you were to get a higher quality PSU, you could actually cut back on the wattage a calculator suggests by up to 10% (based on Newegg's wattage calculator anyway).