Sign in with
Sign up | Sign in
Your question
Solved

Radeon 7790 Crossfire

Tags:
  • Radeon
  • Storage
  • Processors
  • Crossfire
Last response: in Graphics & Displays
Share
July 6, 2014 6:37:14 PM

I have an XFX 550w pro psu and an fx-6350 processor. I'd like to know if I would have to upgrade my psu if I wanted to add another sapphire 7790 (or maybe a 260x) to crossfire. Would that be possible to do without upgrading?

More about : radeon 7790 crossfire

Best solution

July 6, 2014 6:46:47 PM

7790s are roughly 100w video cards, so your PSU should be adequate to handle two of them. You'll just need to check if your PSU has enough 6 pin power connectors, I believe you will only need 2 so you are likely fine.

However, I must add that I advise a single more powerful card over crossfire/SLI. There can be game compatibility and microstutter issues with crossfire (Though microstutter is not as bad as it used to be anymore).
Share
July 6, 2014 7:10:56 PM

Okay. Is there a way I could figure out how much power my pc draws at full load?
m
0
l
Related resources
July 6, 2014 7:26:02 PM

No software could reliably do that. What you can do is to plug your computer into something like this -
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
And it will tell you the power consumption of your entire PC.

Or you could try to estimate it based on what is in your PC, as long as you haven't overclocked. CPUs and Video Cards have published TDPs (Thermal Design Power) which is the amount of cooling needed to cool it off, and its pretty close to actual power consumption.

Lets use my PC as an example - I have an Intel i5-2500k and a Radeon hd 7950.
A quick google search tells me that my i5 has a TDP of 95 watts.
The video card is a bit harder to find, but Wikipedia has a nice chart of 7000 series video cards
http://en.wikipedia.org/wiki/Radeon_HD_7000_Series#Rade...
According to that chart my 7950 should use roughly 200 watts.
For the rest of the system we will give a generous estimate of 50 watts maximum, as fans, cd drives, and hard drives don't use much power.

So we have:
CPU - 95 watts
Video card - 200 watts
Fans/Hard drives - 50 watts

Total: 345 watts (keep in mind this is an estimate of maximum power consumption, and is likely a bit higher than reality)

Hope this helps.
m
0
l
July 6, 2014 7:30:34 PM

Thanks!
m
0
l
July 6, 2014 7:36:02 PM

No problem :) 

If your issue is solved don't forget to choose an answer as the solution.
m
0
l
!