I have an awkward question I'd like an opinion on. I have a 4930k installed on an Asus R4BE. I am using a Samsung 950 NMVe HD and I have 2 AMD Firepro W7000's linked in Crossfire. I have been messing around all day trying to get some cooling issues straightened out (the firepro's run super hot). One of the firepro's had dust blocking the stock cooler. I had an old twin fan cooler for from an R270 that I used to replace it and it seemed to fix the problem. However, in messing around with my BIOS; I realize that my second card is running at PCI GEN 3 link speed of 8x and the main is running at the expected 16x speed. I finally played around with the lane simulator enough to realize the speed reduction was being caused because my NVMe HD was running on a PCI 3.0 of 4x. I switched it to the 1x bus, and that brought both graphics cards up to 16x each, but my HD sits real close to my second graphics card.
So here is my question: Is it better to run both graphics cards at 16x and the PCI HD at 1x or run 16x/8x on the CF graphics and 4x on the PCI HD. I run an engineering company out of my home office and use my PC for CAD work and some graphics programs. I also play games during the evenings. I'm just curious on opinions. I think the HD adds in much more benefit than having both graphics at the high link speed.
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