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Title: AMD 290 issues with more than 1 Card Post by: Bram on December 22, 2013, 12:23:07 AM Am having an issue when connecting more than 1 AM 290 card.
Its a Sapphire 290. Both cards are exactly alike. I am using CGminer 3.7.2 with -I 18. 8 gig of memory 120 gig SSD Windows 7 fully patched Two power supplies . 950 Watt to Card 1 and MotherBoard (ASRock Z87) it has slot for 5 cards. 950 Watt to Card 2. each card is inserted into the PCIE slot no riser. each card works fine by itself and gets around 730 Kh/s. when I connect the second card, and start CGminer, it runs for about 5 sec and then crash. Any Ideas? Thanks in advance. |