Is my power supply enough for a cross fire 290 or sli 780 ?

[garyfl]

as title states really, i have an RM 750 Gold rated psu, currently have one 290 sitting at 1150 core. system is in sig. if i was to get another tri x, would it cope ? or would it fare better with an sli of the more power efficient 780s ? as thats a consideration atm pending on how i get on with AMD tonight.

 

[Gregster]

Pushing it for any overclocks but for stock, it should be fine.

 

[vUNREALv]

You should be ok with that PSU mate, some people might say otherwise but I would trust it.

 

[NoNameNoNumber]

Stick another 290 in and with the money saved from not buying 2 new 780s buy one of those EVGA 1000w PSUs with a 10 year warranty.

 

[RichIbizaSport]

I run 2x290 in crossfire with an i5 at 4.2

I have a Coolermaster silent pro 700w and a power meter at the wall. Running bf4 on ultra pulls around 600. I don't overclock the cards at all.

 

[garyfl]

i probably wouldnt oc them if i had 2 tbh, literally would only do it for benches. i just want to be able to play games with 60fps but with super sampling, plus ill be going 1600p before the years out

 

[MOOGLEYS]

You will be fine running 2 cards with 750w and a 62.5A 12v line although I would be more concerned about the crappy Chinese caps going pop in the RM psu tbh.

I would sell the RM and grab a Superflower, EVGA or Be-quiet PSU.

 

[whyscotty]

Would it run - Yes

Would I risk it - No

Others will say you'll be fine, I'd let them risk it.

290's/780's draw a lot of power once you overclock.

As you say you will be benching.

So for me, that PSU isn't up to the job IMO.

 

[LtMatt]

Would it run - Yes

Would I risk it - No

Others will say you'll be fine, I'd let them risk it.

290's/780's draw a lot of power once you overclock.

As you say you will be benching.

So for me, that PSU isn't up to the job IMO.

A quality (Gold or higher) 750W would be my recommended minimum. Ideally you'd have a quality 850-1000W psu. 1000W gives you headroom for extreme overclocks.

 

[win8.1]

You would probably need 1200W Psu for headroom with extreme overclocks. When I tried it at 1200/1400 +200v the whole system was pulling over 900W and that is not even extreme clocks. I think at normal volts it used just over 600W. Slightly undervolting with a bit of a overclock, less. The new 14.6/14.7 drivers add 60W+

 

[kabir92]

that 750 is minimum, if you want to be safe id say 300w for each card with a slight overclock, if your're changing voltage then add more, then give the rest of your system around 200w including hard drives, ram and fans etc that should give you enough safe headroom for a little over clocking. so yeah 850 - 1000 would be the range.

 

[kabir92]

You will be fine running 2 cards with 750w and a 62.5A 12v line although I would be more concerned about the crappy Chinese caps going pop in the RM psu tbh.

I would sell the RM and grab a Superflower, EVGA or Be-quiet PSU.

I'm starting to hear bad things about the RM series , i though they were good bar the caps, at least they were back when I bought them in feb, guess ill have to wait and see