Considering the price and value of a D3, I really recommend to buy a good PSU from company like EVGA. They have great power supplies and I have seen people use them with Bitmain products. You can search youtube to find which models, If i remember well I think it was 1600T2 or P2. Don't buy cheap psu, it will damage or even burn your miner since it is meant for 24 hours operation.
Cheers!!
What are uour referral that proves that they have a great power supply?