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Sufficient PSU for Crossfire 7970's

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September 4, 2013 5:15:51 PM

Would a Rosewill Extreme series 850w power supply be enough to handle crossfire 7970's?

More about : sufficient psu crossfire 7970

a b ) Power supply
September 4, 2013 5:18:10 PM

steamywildwood said:
Would a Rosewill Extreme series 850w power supply be enough to handle crossfire 7970's?


With 64A on the 12v rail, that PSU is an awesome match for 2 7970's. It also gives you some extra headroom if you decide you want to overclock them!
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September 4, 2013 5:19:59 PM

Zero Cool said:
steamywildwood said:
Would a Rosewill Extreme series 850w power supply be enough to handle crossfire 7970's?


Yes, that PSU is an awesome match for 2 7970's and gives you some extra headroom if you decide you want to overclock them!


Are you sure? I've had a friend tell me its not up to snuff, I figured I'd let the experts let me know what the verdict is.
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September 4, 2013 5:21:27 PM

steamywildwood said:
Would a Rosewill Extreme series 850w power supply be enough to handle crossfire 7970's?



Also look at corsair or seasonic, there psu's are very well made.

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a b ) Power supply
September 4, 2013 5:24:40 PM

steamywildwood said:
Zero Cool said:
steamywildwood said:
Would a Rosewill Extreme series 850w power supply be enough to handle crossfire 7970's?


Yes, that PSU is an awesome match for 2 7970's and gives you some extra headroom if you decide you want to overclock them!


Are you sure? I've had a friend tell me its not up to snuff, I figured I'd let the experts let me know what the verdict is.


Check out this chart. Even running Furmark the system is only drawing 641w with 2 7970's and an i7-3960x. While gaming they were at 489w. Your power supply will work great. (They were using a 850w PSU for this chart as well)


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September 4, 2013 6:20:42 PM

I guess I should have been more clear, I already own the Rosewill Extreme series 850w PSU im asking if it will be ok and keep an additional 7970 going.
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a b ) Power supply
September 5, 2013 2:45:53 AM

yes no problem. hopefully AMD continue to improve their drivers for crossfire, although im sure the next gen cards will make a more significant improvement on frame time variance ;)  ......... (if it were my rig i'd wait for next gen amd cards for crossfire). But if you just cant wait.....then go for it....
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