I have been googling problem obvisouly ... I am found a couple of places where people have the same problems and could not fix them and this Moherboard is basically Crap ... Can someone confirm this so I can return this product ASAP
Don't blame the board. I am running two of those ASROCK boards, each with four Sapphire R9 270x GPU's without issue. The 270's have dual PCI-E power connectors on the back however.
I agree with the powered risers. Sounds like a power issue to me.
Added: None of my cards are in the slots, all but the 4th card (in each rig) using powered risers.
I have 2 other 4X GPU rigs. I am not a newbie... there was something very wrong with that board.
I blame the board very much.... I troubleshooted it for 3 days 10 hours a day for a total of 30 hours .... I have a plethora of Powered and unpowered risers.. tried everything you could think of. It does not like R9 290's
The r9 290's also have 8pin + 6pin power connectors, nevertheless they still need 75Watts each from MOBO or powered riser .. but this MOBO was supposed to eliminate the use of Powered riser with the extra power coming from the 2X molex connectors on board supplying the PCI-E slots with that power directly.
I have found numerous posts that this board is crap anyways. One guy bought 10 of them and had to RMA 4 of them .. I probably can't RMA mine since I bent the pins in the CPU slot thingy ... Does anyone know, it was comletely my fault by trying to put the protector on before bringin gto the store for a refund. anyways venting a bit here.
Cheers,