I'm thinking of buying the new 27 imac. I'm going with an i7, 256 ssd, 24GB of RAM and the AMD Radeon R9 M395 with 2GB video memory. I'm going to be using it for editing and gaming. I noticed there's not a big difference between M395 and M395x, a 10-15% gap, performance wise. So I came across this site : https://bizon-tech.com/us/bizonbox2-egpu.html/ Which offers an external gpu which boasts up to 9x boost in performance. It's a bit expensive, but I think it'll work better in the long run, I mean it's probably better than paying top bucks to get the M395x now and get outpaced two years later. So what do you guys think? Has anyone had any experience with external gpu and if so, is it worth it?