Title: Help with rig and riser cables Post by: matt5 on May 23, 2013, 05:21:26 PM Hi guys, newbie to the site here only semi new to alt coins.
I've been googling around to see if I could find a solution to an issue with my mining rig, I'm hoping someone here might be able to help =D The problem I am having is, whenever I try to use risers, anything past 2 cards my rig won't see... Current setup is 1275w psu 4x 7950s http://www.amazon.com/dp/B0057M16Q8/ref=pe_175190_21431760_3p_M3T1_ST1_dp_1 (http://www.amazon.com/dp/B0057M16Q8/ref=pe_175190_21431760_3p_M3T1_ST1_dp_1) these risers http://www.newegg.com/Product/Product.aspx?Item=N82E16813157336 (http://www.newegg.com/Product/Product.aspx?Item=N82E16813157336) this mobo I know some stuff like the board is overkill for a rig, but for my first mining rig build I wanted to keep things simple (no 1x to 16x risers, shorting pins, etc). Right now (as some of my 7950s are 3x slot cards) I have 3 running in a custom case, if I use the risers (same cards, same slots) i can only see two cards. If I hard plug in two cards, and plug in one via riser, I can still only see two cards. I have no idea of my issue here. I mean the risers work... as long as I only use two cards. The mobo is made for 4 cards. The mobo has a molex in for extra power to the pci slots, so powered risers I would think should not be needed. Anyone have any ideas or need any more info/pics? Am I just using the wrong risers somehow? I appreciate any and all comments! Thank you! |