Hello. So I found out my EVGA 850 BQ is not enough for 3x r9 280x.

I am asking which is better:

- Some normal psu, but 1kW or 1.2kW (eg. EVGA, Corsair)
or
- Server PSU and some old 350W PSU I have here.
https://www.parallelminer.com/product/platinum-1200-watt-200-240v-power-supply-kit-for-gpu-mining-zec-dash-eth/?attribute_62-pin-pcie-cables=%2B+8+6%2B2pin+PCIE+cables

Thanks.