Hopefully I can get the same question answered via this post.
I have a z820, win 7 pro with 2 xeon 2620 cpu, 64gb 12800 registered ram, a single ssd drive (which I will want to expand with a couple of other drives) and the 850w psu.
From what I've read the psu only has two 6pin PCIe connectors, and my 'new' gpu needs two 8 pin (gigabyte gtx 1080 xtreme waterforce) . The gpu comes with a single 6pin to 8pin adapter. From what I've read elsewhere, the psu should be ok with this single card. Its just a matter of how best to get power to it.
I gather I can use the provided adapter (6 to 8 pci-e) . Can I buy another and use that on the other 6pin out of the psu ?
Or will I need a to buy a dual 6 pin to 8 pin adapter, and also a dual 4 pin molex to 8pin pci-e for the second Gpu aux. As its a single card and I don't plan on a dual gpu (at this point) I'm thinking I don't need the 1150w psu. I plan on using the workstation for some vr gaming,and some modelling and rendering in maya (novice) .