Ninjastic
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Board Mining (Altcoins)
Re: XFX Black Edition R9 280x (4 cards on 1 motherboard) Having some issues.
by
HashHound
on 19/02/2014, 22:38:06 UTC
Quote from: JohnnyVicious on February 08, 2014, 07:35:47 PM
You shouldn't connect the two PCI-E of the same modular PSU rail to one card, that is also somewhere stated in the manual of the GPU.
So each power rail is connected to 2 GPU cards, 8-pin to the first GPU, 6-pin to the second GPU.

I tried this, the machine was more stable when I had 1 cable per card.

I've tried so many different setups with my power supplies. (http://www.newegg.com/Product/Product.aspx?gclid=CPLK1P6f2bwCFecRMwodKlYAhQ&Item=N82E16817182264&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-Power+Supplies-_-N82E16817182264&ef_id=UuYUTwAAAfbx9LV1:20140219223501:s) Like I said, the most stable set up was with 1 card on the main PSU and 2 cards on the 2nd PSU, all cards were on their own individual rail.  My PSU manual says nothing about how to setup multiple PCI-e video cards.

Sorry for bailing on this post, I was out of town.