title: eGPU with USB3.0 to train CNN
body: <p>I want to use keras with tensorflow-gpu to train CNN at work.</p>
  
  <p>Since I cannot use cloud GPU server such as AWS, because cannot transfer data outside of intranet, I wanna try to use eGPU.</p>
  
  <p>But the problem is, my office computer doesn’t have thunderbolt3 IF, only have USB3.0 Type-A.
  So I have to use an adapter that convert Thunderbolt3 to USB3.0.
  Thunderbolt3 has 5GB/sec data transfer speed, but USB3.0 has only 500MB/sec.</p>
  
  <p>Does this speed disadvantage makes any serious mal performance when training CNN?
  Currently it tooks 24 hours to train mobilenetV2 with 1400 photos, which size is 244*244.
  I would be happy if eGPU makes this in 30 minutes.</p>