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Legacy graphic card question

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In my parts-bank I have the Gigabyte boards GA-MA790FX-DS5 & GA-MA790FX-UD5P.....both have two PCIe x16 slots. My question is are both slots useable if I am not installing two graphics cards? For example, one slot for graphics card and other slot for NIC or video capture card or whatever. I have seen it said that one slot must be left open when not doing the ATI CrossFire (two graphics cards setup).

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yes both slots are usable, without getting to involved in the technical side of things (seeing how i'm not 100% sure myself.) the number of pci-e lanes supported depends on the the cpu/motherboard. so even if yours only support 16 lanes total if you plugged something into the second slot the graphics card would be allocated 8 instead of the full 16 lanes (you'd not notice the difference) and the device in the other slot would get allocated the other 8 lanes, so both would work just fine.



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