Unless you are training maximizing the PCIe lanes is truly overrated. You certainly don't want to be running at 1x speed. But 8x speed is enough with minim

Unless you are training maximizing the PCIe lanes is truly overrated. You certainly don't want to be running at 1x speed. But 8x speed is enough with minimal impact. 8*3 = 32 lanes. Most CPUs can provide that. I'm running off a 2012 hp z820, that yields 3x16/1x8. So for anyone going for a build, don't throw money on CPUs. IMHO, GPU first, then your motherboard second (read the specs sheets), then CPU supported pcie lanes & Storage speed.