The problem with PSU's smaller than 750 W is they almost always don't have the PCI-E connectors or rail amperage you need to run multiple cards in a mining rig. BBT did a good presentation overview on PSU's for a mining rig.
https://youtu.be/ZEedQT0oGYw?t=396
https://youtu.be/ZEedQT0oGYw?t=396
Thanks. This video was quite good and was a useful reference.
The problem I have is that the Vega 56 requires 2x8 pin power connectors, and it seems like the PSUs will quickly run out of connectors.
Any advice on what I can do to avoid a tower of PSUs powering my Vega 56 rig? I currently have 2xVega 56 and they are being powered by the PSU powering the mobo as well, but I will have a problem when it comes to the third Vega...
A dual PSU setup with an ATX 750 W for the motherboard and risers and a larger server PSU with a PCI-E breakout board is an option. Larger server PSU's are usually 240V only though and are too loud if it's going to be in a living space.
https://www.parallelminer.com/product/2400-watt-power-supply-kit-for-gpu-mining-94-efficiency-200-240v-ethereum-eth-zec-dash
I recently ordered one of these dual 120V 2400W PSU's for my ASRock H110 Pro BTC+ build and have been very happy with it.
http://www.panto-tech.com/products/206-110v-260v-power-supply-2400W-for-miner.html
It has 18 PCI-E 6+2 connectors that I use for the GPU VGA power inputs. It runs quiet and very cool as long as it's not run it at more than 50% of the capacity. When you run it at more than that, the fans get progressively louder the more wattage you pull from it. Shipping via DHL direct from the manufacturer was very quick. Total cost through PayPal was $181 shipped and I got it in less than 4 days.
The same manufacturer also has the same PSU with only the 18 PCI-E connectors and it's about $30 less, so I think that may be a better option for a dual PSU setup since I don't use the ATX 24-pin or sata/molex connectors on it.
http://www.panto-tech.com/products/207-110v-220v-power-supply-2400W-for-miner.html
BBT did a review of the PSU and has run it through various tests in his recent live streams and it's held up well. We'll see how it holds up long term, but for $150 shipped it's a good deal and solves the problem of not having enough PCI-E connectors for larger builds.
https://youtu.be/ZY2ouRWHgT8?t=300
This was very helpful. Thanks a lot!
