well the 3k series can and will peak randomly over 1000 watts which will result in shutting down your pc therefore you need a quality psu which can handle those peak numbers. it doesnt have to be 1k watt platin psu which would be nice to have ofc but it only has to handle those peak numbers for like 0.1ms. there are good 500-800w which all can handle the peaks but apparently not yours. the brand and bronze/gold/platin does not matter much instead you have to look at the specific model that can handle those peak numbers.I had a chart for that which Ill post when I have the time and can find it. I went with the corsair 1k platin for that reason only.