Which PSU?

[christianelliott]

hi guys! i am building a gaming computer with the following:

NZXT LEXA-S case
8gb corsair vengance ram
i5-3570k processor
AMD radeon 6850 hd graphics

i am deciding between these PSUs

http://www.amazon.com/gp/product/B006BCKHIQ/ref=ox_sc_act_title_1?ie=UTF8&m=A3K929QT0IENFR

both are 80 plus gold certified, the above PSU is 750 W


http://www.newegg.com/Product/Product.aspx?Item=N82E16817182071

this one (above) is 650 W


is the 750W PSU overkill?

NOTE: i may do some upgrading in the future, if that would affect anything


thanks!

 

[JohnnyLucky]

According to AMD a 500 watt power supply is more than adequate for a desktop gaming pc with one Radeon 6850 video card. A 600 watt power supply is more than adequate for a desktop gaming pc with two Radeon 6850 video cards:

http://www.johnnylucky.org/graphic-cards/gpu-power-requirements.html

The Rosewill Capstone series power supplies have earned favorable reviews published by web sites that have the proper equipment and personnel to perform rigorous testing and in-depth analysis of components. I listed them in the psu recommendations I maintain:

http://www.johnnylucky.org/power-supplies/psu-recommendations.html

Scroll down to the Rosewill section where you'll find links to competent technical reviews.

 

[christianelliott]

According to AMD a 500 watt power supply is more than adequate for a desktop gaming pc with one Radeon 6850 video card. A 600 watt power supply is more than adequate for a desktop gaming pc with two Radeon 6850 video cards:

http://www.johnnylucky.org/graphic-cards/gpu-power-requirements.html

The Rosewill Capstone series power supplies have earned favorable reviews published by web sites that have the proper equipment and personnel to perform rigorous testing and in-depth analysis of components. I listed them in the psu recommendations I maintain:

http://www.johnnylucky.org/power-supplies/psu-recommendations.html

Scroll down to the Rosewill section where you'll find links to competent technical reviews.

ok, so the processessor and such dont matter when choosing a PSU? just the graphics card?

since i may upgrade to a better graphics card someday, i think ill go with a 650w