PSU strong enough for GPU?

somekindofwizard · Mar 4, 2014

OK so I'm currently in the process of upgrading my graphics card from a BFG TECH 9800GTX+ OC to something that can run DayZ much better.

A few months ago a friend had bought me the ASUS 660GTX: http://www.newegg.com/Product/Product.aspx?Item=N82E16814121660
but I had issues with it on my PC. Games were crashing and the video was giving me insane artifacts all over the place and some other issues that I was so certain it was just a bad card. Well, I had sent it back (he had bought it through amazon) in hopes to get it replaced with a different one to be sure it was the card itself. Turns out they didn't have anymore in stock and he needed the money for other stuff at the time. Well now he's able to get the card for me again and I just want to be absolutely sure my PSU (as well as the rest of my PC) can run it for sure.

Here is my PSU: http://www.amazon.com/Eagle-ET-PSVT600E-600Watt-connectors-Crossfire/dp/B0029Z9UPA

Output: +3.3V@28A; +5.0V@34A; +12V1@17A; +12V2@19A; -12V@1.5A; +5Vsb@2.5A

I realize it's not the best as it was just supposed to be a temporary replacement when my corsair 750W died but it seems to run my current card OK which was all I needed. So I come to you guys to see if it's possible that this PSU can run that card OK or if that was my problem all along. I can't find the minimum requirements for that specific 660GTX as far as the 12v rails go. Any help would be appreciated!

Also, if I can't run that card, are there any cards close to it that I can run?

Brantyn Gerik · Mar 4, 2014

It will be good enough, but just barely and i would highly advise getting something better before (need to plug each 12v rail into the card rather than power it off of one of them). honestly just find a stronger psu with at least 32 amps on the 12v rail just as a general rule. also a better gpu will not skyrocket your dayz performance, as it is more of a cpu hungry game right now.

now i do realize that it has 2 weaker 12v rails, but having 2 rails means 2 possible points of failure, rather than one, and they are different amperages (still fine but just plain not as good as two identical 12v rails)

so all in all, it will work, just make sure the 660 gets use of both the 12v rails. that being said, if i remember right, the 660 only has 1 6 pin, which makes it near impossible to get both 12v rails into it, therefore making this psu unsuited for running a 660 (didnt feel like deleting the rest)

Brantyn Gerik · Mar 4, 2014

so basically forget the top part of what i said and get a new psu, as the 12v rails are not strong enough on their own to run the card, and due to the connector, it is unlikely that you can get both 12v rails into the card

THEMRSKELETON · Mar 4, 2014

Yes that PSU would run it. Like you said it is a bad brand and u might have issues down the road. But yes it would run it

the great randini · Mar 4, 2014

the recommended wattage on most sites is 450-500 for that gpu.

power supply calculator is another way to judge

Brantyn Gerik · Mar 4, 2014

that psu is made to do something like sli two 650 non ti versions or two 7790. with a single high current using card, it simply won't be up to snuff if you can't get both of those 12v rails to power the card

somekindofwizard · Mar 4, 2014

Yes this is what I was afraid of with this card seeing as it only has the 1 6-pin connector. I had a feeling that I was not going to be able to power it. Are there other 660's with two 6 pin connectors and if so, would it then be okay to use this PSU on that card?

Brantyn Gerik · Mar 4, 2014

i don't think there are any 660 non ti editions with more than 1 6 pin :/ maybe some 660ti's would, but to my knowledge, no 660's do

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