Alright I built this for litecoins but same principal.
Here is my setup.
1600 watt psu
http://www.amazon.com/dp/B007W5TV6K/ref=as_li_ss_til?tag=onsimobicomps-20&camp=0&creative=0&linkCode=as4&creativeASIN=B007W5TV6K&adid=0TSSEEV0RC81HPVBKQD4Mother board MSI Z77A-GD65-
http://www.amazon.com/dp/B007QWIA52/ref=as_li_ss_til?tag=onsimobicomps-20&camp=0&creative=0&linkCode=as4&creativeASIN=B007QWIA52&adid=0PFP81V7KE692HCNM2EZ5 of the rx 280x-
http://www.amazon.com/dp/B00FLMKNE0/ref=as_li_ss_til?tag=onsimobicomps-20&camp=0&creative=0&linkCode=as4&creativeASIN=B00FLMKNE0&adid=1RHD3XK1P1GDBP3WPQ5VIntel Celeron Processor
8 gb of ram
32gb ssd card
running windows 8
used a shelf from lowes for the case
using 1x to 16x risers for the cards
Mobo here
http://www.coinminingrigs.com/wp-content/uploads/2013/10/6-gpu-bitcoin-mining-hardware.pngMy issues
1. I can only get 2 cards to show up on the mobo. They are plugged in using 1x to 16x risers, non powered I have 5 cards in a row. Only number 1 (the monitor is attached to it) and number 5 will show up on the device manager.
I am using 1x to 16x risers gpu number 1 is in the 1x (black) slot next to Military Class 3, then I skip the 16x and plug card 5 in the next 1x slot. I tried plugging in the other 3 cards into this same slot but they do not show up when the computer boots. They power on, the fan runs but I get nothing.
I tried plugging the cards directly into the 16x slot and nothing works at all the screen just loads black. I unplug from the 16x slot and it comes back on.
The cards that I can get working are set up great. Im getting about 1450-1500 kh/s from the two. So getting all 5 working would make my day.
I followed this guide to build the set up and it led back to this forum
http://www.coinminingrigs.com/ please go to the 6 gpu guide thats the one I used. I only got 5 gpu's due to using the 1600 psu
Here are some questions I was asked when working with a guy on skype,
1. Yes everything is plugged in correctly. Each gpu has both 8 pin slots plugged in. The psu has 6 power slots for gpus I am using 5 of them.
2. Each card turns on and the fan runs when plugged into the gpu but only the 2 will show up and work.
Feel free to throw ideas at me. I have cgminer working great with the two cards and really want the other 3 up and running. Its been nothing but issues since I got this miner. First was 7 day delayed shipping due to weather. Then had issues with windows 8 setting up correctly and finally only 2 of 5 cards are working. I am hoping within the next few days I can get that resolved as well.