Not all of us can jump right in and start buying the latest and greatest video card, especially in a situation where you want to use 6 of them. After a couple of weeks of research the following is what I decided to go with based on price, power consumption and hash rate to build my 6 GPU mining rig. The primary goal of this mining rig is to mine Monero.
Motherboard: Asrock H110 Pro BTC
Processor: Intel Celeron G3900
Memory: Kingston Technology KVR21N15S8/4 ValueRAM 4GB 2133MHz DDR4
Power Supply: EVGA 1000 GQ, 80+ Gold 1000W 210-GQ-1000-V1
Hard Drive: Kingston Digital, Inc. 120GB A400
Video Cards: The best hash/cost average for XMR will be with used HD 7XXX cards, especially if you have cheap power costs. The cards for a six card rig should be $400> and get 3000+ H/s on XMR. I get ~515 H/s @ 105 W on XMR with a Powercolor HD 7850 and ~195 H/s on ZEC for ~140 W with the AMD blockchain drivers
Adapters: MintCell 6-Pack PCIe 4-Pin MOLEX PCI-E 16x to 1x Powered Riser Adapter Card (x2)
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