PCIe 1 to 4 Riser Card, Pcie Splitter 1 to 4 PCI Riser Card, 4 Risers into 1 PCI Card, PCIe Multiplier Risers 1X to External 4 PCI-e USB3.0 Adapter for ETH Miner GPU Crypto Bitcoin Ethereum Mining Rig

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Furthermore, and this is very important to note, PCIe splitters DO NOT increase the lane count! If you split a single x4 slot into two x16 slots, you will not have 32 PCIe lanes. Instead, the bandwidth of the four lanes of the host card will be divided across the split ends. NFS does generate a sync-write workload, and you'll definitely feel the pain on smaller files/transfer sizes if that's kept on. I don't care that much about graphics bandwidth and I'd like to add USB 3.0 support. It's a waste to be using 16 lanes of pci bandwidth for a graphics card I hardly use, and I've found some convenient front panel usb 3.0 cards that only need a 1x pci slot.

split a 8pin PCIe into 2 8pin PCIe? - [H]ard|Forum is it safe to split a 8pin PCIe into 2 8pin PCIe? - [H]ard|Forum

Also, @HoneyBadger I should clarify, the SLOG should be useful, it's intended for the main pool of SAS HDDs. I thought I'd partition the two M.2 SSDs so that two small partitions on each drive act as a mirror vdev for an SLOG cache, and the remaining two partitions could be mirrored as well, albeit for a different pool - git or whatever. It's just that whatever enterprise M.2 SSDs with data loss protection I find tend to be like 960 GB in size, and that's waaay too much for SLOG. I just dont want to waste the space of SSDs as expensive as that. Feel free to comment on whether I'm shooting myself in the foot with these partitioning schemes, but from what I've read, it should be ok.I have run many 1080Ti cards using both "A" cables as well as using 6 pin to dual 6+2 pin cables. It is all about the connectors and not really the wire itself.

pci-e x16 slot for multple cards? - Super User Can I use a pci-e x16 slot for multple cards? - Super User

Having more PCIe slots means getting the opportunity to install more expansion cards for various uses. However, there are only two ways to increase the amount of PCIe slots you have: The x1 PCI Express adapter board has mounting holes for its mechanical fixation inside the computer chassis (embedded computer), and support tabs for mechanical stabilization of the add-in PCI Express expansion board (US Patent 7,255,570). There are many types of PCIe splitters, and they come in many configurations. The splitter above is an external PCIe splitter.

Since a typical motherboard and a case does not have the space to accommodate the multiple graphics cards that a mining rig uses, “risers” are used to install the graphics cards externally. So even if the PCIe version of the splitter card is V3.0, if the slot on the motherboard to which it connects is V2.0, the bandwidth will conform to that of PCIe v2.0. So you cannot install four graphics cards on these and expect all of them to perform optimally for gaming. The performance will not even be close to optimal. Each graphics card is designed to use 16 PCIe lanes! They aren’t intended to be used on x4 slots for gaming, let alone on the 4-way split. This splitter connects to x1 slot on the board and then splits into four x1 slots for further expansion. So basically, the idea here is that the amount of bandwidth the cards occupy on the splitters should not be greater than the bandwidth provided by the primary x1 host slot connected to the motherboard. While a splitter allows you to have more PCIe slots, an important point to remember is that you don’t get more bandwidth in doing so.