u_gonna_squeal_b4_we_cookya said:
opponentmule2 said:
Oh the 7990 need 1000w ???
PcParts told me it'll only take like 650 w, since i've a very good 750w PSU, would it be enough?
On the newegg page you linked to for that discounted Powercolor 7990, in the details tab, it says it needs a minimum of 850 watts. Depending on what else you have installed on your PC, you may or may not need more than that. I only said 1,000 watts so that you would have more than enough headroom now and for any other parts that you may add in the future. You may be able to use the 750w you have now, but only if it is of really really good quality and well made and if it is 80 plus rated - preferably gold. Even then you might be pushing it to its limit. You are essentially installing two video cards in your PC and based on the pictures of it on newegg this card needs three 8-pin PCI-e power cables to run it. That is a lot of juice. According to
this review of a standard 7990, it uses up to 491 watts by itself. And that standard card only has two 8-pin PCI-e power cables. I would assume that the Powercolor version will use more simply based on the 3rd PCI-e power cable requirement. If you want to truly find out if your power supply is capable of running all of your components, then plug in everything into
this PSU calculator and find out. It will give you one value which is how much wattage all of the components use and a second value which is what they recommend the wattage of your PSU be.
at peak the Devil 13 consumes 304 watts (according to
this review and the one you posted shows
total system wattage) judging by those numbers, a psu from any respectable brand will run it (it does not have to be 80 + anything, that just shows how little energy is being wasted as heat and whatnot) just make sure the psu is not over rated and can actually provide at least 700 watts and your good to go.