500w enough for 7790 crossfire?
- Thread starter kebbz
- Start date
Solution
- Apr 6, 2009
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The system requirements specify a 600w PSU for CF configs:
http://www.amd.com/us/products/desktop/graphics/7000/7790/Pages/radeon-7790.aspx#2
So, no your current PSU is not up to the task.
http://www.amd.com/us/products/desktop/graphics/7000/7790/Pages/radeon-7790.aspx#2
So, no your current PSU is not up to the task.
WarWolverineWarrior
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- Sep 24, 2013
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Ur GPU only uses 85W. 2 gpu + CPU would only be around 300 W. You should be good. If your system crashes during heavy load then you know to replace your PSU. 7790 is a low end, entry card, you don't need a big PSU.
fudoka711
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- Apr 2, 2012
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Hmm, well if what I read is correct, each 7790 card needs 75W and 21A on the +12v rail, for a total of 150w and 42A. Your PSU only has 36A on the +12v rail though.
From that I would say that you should get a beefier psu.
From that I would say that you should get a beefier psu.
I'm using a 230 W PSU with an i3-3220, an HDD and a 7790; it works fine. So As long as it's a good 500 W PSU (not the cheap one) I think you should be fine. You can search many benchmarks that such setup only max out at less than 230 W.
When I used AMD-5800K in my 230 W setup it would restart if I push the 7790 too hard.
When I used AMD-5800K in my 230 W setup it would restart if I push the 7790 too hard.
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