i will go for a good 850 watts one
Topic: PSU needed for 3 x HD 7970 - page 2. (Read 1474 times)
thanks all
i will go for a good 850 watts one
i will go for a good 850 watts one
At least 1500W because of this http://www.amd.com/us/products/desktop/graphics/7000/7970/Pages/radeon-7970.aspx#2
There's absolutely no need for a 1500 watt PSU to run three 7970s. Around 850 will work, but power supplies are a great example of getting what (watt?) you pay for. Just because a PSU draws 850 watts from the wall doesn't mean it converts all of that into usable DC electricity. A cheap one may only only work at 70% efficiency, which leaves you with ~595 watts; a better (read: more expensive) 850 watt PSU should work around 90% efficiency, and give you a clean 760 watts, which is plenty to power three 7970s.
At least 1500W because of this http://www.amd.com/us/products/desktop/graphics/7000/7970/Pages/radeon-7970.aspx#2
Whoa there buddy 1500w is excessive even a 1000w power supply is more than enough. 
At least 1500W because of this http://www.amd.com/us/products/desktop/graphics/7000/7970/Pages/radeon-7970.aspx#2
Hi
which PSU should i buy to run 3 x 7970 , how many watt ?
which PSU should i buy to run 3 x 7970 , how many watt ?
850 watts minimum, if you do go with an 850 watt it better be a quality one with some nice beefy rails.
I'm running four with a Corsair 1200AX, but you could get away with less. I'd recommend the Corsair AX860i; it's 860 watts and super efficient. Mine is powering two 7950s and never draws more than 415 watts... should be plenty of headroom for three 7970s, especially if you undervolt them a bit.
Hi
which PSU should i buy to run 3 x 7970 , how many watt ?
which PSU should i buy to run 3 x 7970 , how many watt ?
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