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Interestingly, I have never tried 6 or 7 non-GPU cards before, I always had one or more GPUs in my tests... So first I disabled the option ROM on all PCI-E slots, and tested 6 and 7 RAID cards, and I have POST with 6 and 7 cards! If I do 4 RAID cards + 2 FC cards I have POST, but not with 4...

I tried with a bunch of different PCI-E cards, mainly tried with GPU cards + RAID/NAS cards + Fiber Channel cards... nothing seems to work above 5 PCI-E. It doesn't matter which slot or slot combination are being used, 5 cards in any slot will work like a charm, and as soon as I add a 6th card...

Hello everyone, I have a bunch of these SUPERMICRO X8DAH+-F server motherboard, all equipped with dual XEONs X5675, and the latest BIOS from SuperMicro. These boards have 7 PCIE slots and I have been unable to make any of them POST with more than 5 PCIE slots occupied. Has anyone already had...