Hey everyone,
I am currently using a H97-d3h and an r9 390. I am considering possibly purchasing a 2nd r9 390 for crossfire since I can get one at a very decent price. My main concern is that even though my motherboard is "crossfire capable" it makes me weary that the 2nd PCI-E slot runs at x4 speed/bandwidth. I have tried contacting both Gigabyte and AMD and they seem to pass the buck to each other-basically Gigabyte saying "you should ask AMD"(and rightly so imo) and AMD saying "you should consult your motherboard manufacturer".
I have tried to find threads/articles on the issue but the closest I have come across is the difference in performance between x16x8 and x4 slots but none of them are crossfire specific and do not take into account XDMA using the pci slots.
Has anyone out there actually tried running crossfire in a x16x4 configuration? I understand there'd be a performance penalty but is it significant enough to negate any benefits gained?
Thanks for your input everyone.
P.S. I do understand some peeps will simply say "upgrade your system etc" and I am planning to do a whole system overhaul perhaps at the end of the year/beginning of 2017. It is really to see if this is worth doing at this time.
I am currently using a H97-d3h and an r9 390. I am considering possibly purchasing a 2nd r9 390 for crossfire since I can get one at a very decent price. My main concern is that even though my motherboard is "crossfire capable" it makes me weary that the 2nd PCI-E slot runs at x4 speed/bandwidth. I have tried contacting both Gigabyte and AMD and they seem to pass the buck to each other-basically Gigabyte saying "you should ask AMD"(and rightly so imo) and AMD saying "you should consult your motherboard manufacturer".
I have tried to find threads/articles on the issue but the closest I have come across is the difference in performance between x16x8 and x4 slots but none of them are crossfire specific and do not take into account XDMA using the pci slots.
Has anyone out there actually tried running crossfire in a x16x4 configuration? I understand there'd be a performance penalty but is it significant enough to negate any benefits gained?
Thanks for your input everyone.
P.S. I do understand some peeps will simply say "upgrade your system etc" and I am planning to do a whole system overhaul perhaps at the end of the year/beginning of 2017. It is really to see if this is worth doing at this time.