Holy crap: you can connect PCIe ports across motherboards!
Unfortunately the cables for this sort of thing seem to be a bit expensive, but they run at 20 Gbps!
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Holy crap: you can connect PCIe ports across motherboards!
Unfortunately the cables for this sort of thing seem to be a bit expensive, but they run at 20 Gbps!
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Richard WM Jones 
how these cables are recognized under linux ? like a network card ?
Well .. a good question. I don’t think the cables above will actually work.
Apparently Linux does support this. It’s called Non-transparent Bridge (NTB). But I’ve no idea how you actually use it or how much it costs.
Thanks for this NTB link.
I would love to hear more about this.
Interesting, Intel dual 10G-BaseT (X520-T2) is ~$700 per end, devil in the details? Bandwidth is the bottleneck in “Desktop” motherboards. Don’t quote me but I think the PCI-E 2.0 x16 interface on the GA-78LMT-USB3 is for graphic adapters only as it is on most “Desktop” boards. Don’t know of any economical motherboards with integrated 10B-BaseT yet. Supermicro X9SRH-7TF server motherboard does but at ~$500 it blows the budget.
10G/20G Infiniband is the way to go. You can get “affordable” cards, cables and switches off of ebay. All in for 10 servers I spent $500 total. I now have a 20G dedicated ISCSI (IPoIB) configuration that is very fast!