Which takes me from four cards 5 PCI slots-high (which fits naturally in the 5,1), to five cards at seven PCI slots-high (which most certainly does not). This would all be simple enough were it not for the 2nd Radeon VII card. Blackmagic Design Decklink Mini Monitor 4k PCIe Card Sonnet Allegro Pro 4x Type-A USB 3.2 (10Gbps) PCIe Card 512GB 2.5” SATA SSD installed in optical bay (Boot Drive) 4x 6TB 3.5” SATA HDDs in RAID 10 (Media Drive) 2x 2TB Samung 960 Pro NVME on a Lycom DT-130 x8 PCIe Card (Cache Drive) That’s left me with the following components to stuff into the new 5,1 (12-core 3.46Ghz, 96GB RAM): Having just had to retreat (for the time being) from a 7,1 purchase, I’m looking to do a new 5,1 build with a few of the parts I’d pre-emptively bought for the new machine, along with a couple of the cards I held on to from my previous 5,1 build (which I just sold).