It really boggles my mind how stubborn you are and how much you feed into my points. Loading data from the background is another way to reduce bandwidth, because you're spreading out the load. If you actually had any real experience with this kind of stuff, you'd realize that real-world results (techpowerup.com has them, in case you're interested) show that you can get very good results without 16 lanes. Not perfect results, but very good ones. And this is based on the aging PCIe 3.0. I'm not pulling my claims out of my ass, the data is there. Again, servers are a bit of an exception.