Question Geforce 980 Ti which psu is recommended??

Jun 19, 2019
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I am using a normal psu from acer, it just shutdown auto after using for 3 years..
im using acer predator g6 710
32 GB RAM
2 TB Hard drive
windows 10 64 bit
intel core i7 6700k @4ghz nvdia geforce 980 Ti
windows 10

Im planning to buy 750 watts or 850 watts but there recommended psu is 730 w as shown on their website stated minimum

also is buying nvdia geforce 1070 is good for this pc??