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Topic: PCI-Express replicators (Read 613 times)

sr. member
Activity: 406
Merit: 250
May 29, 2015, 01:52:49 PM
#3
For AMD there is a limit of 8 GPU. I could run 8 GPU (4X7990) on a mother board with 6 PCIE slots, but on 10 GPU (5X7990).
legendary
Activity: 2002
Merit: 1051
ICO? Not even once.
May 29, 2015, 11:51:56 AM
#2
Interesting, I'm curious as well. However, I remember reading somewhere about a similar (more expensive) hardware when someone mentioning the stock BIOS might be hard limited only handle 6 or 8 PCI slots so it might need some careful BIOS mod to work. And then there would probably be OS issues.
full member
Activity: 139
Merit: 100
May 29, 2015, 11:44:53 AM
#1
Just stumbled on these: http://www.ebay.fr/itm/Plaque-Riser-replicateur-PCI-Express-1x-vers-4-ports-PCIE-1x-/301528213198

If there is no performance impact, you could add two of these on an H81 BTC motherboard and drive 12 GPUs from a single system.
The G1840 CPU has 16 PCI-E lanes, so it should work in theory.  Using powered risers, there should be no power issue.

Has anyone tried these before?
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