Yeah, unfortunately -- THIS, THIS, THIS.
I've been a Mac user and advocate since around 2001, but I've *never* seen a Mac built in the era of OS X that truly had a "first class/top tier" graphics chipset or card available in it.
I became convinced that Apple did this on purpose, out of some stubborn but misguided belief of Mr. Jobs that he was doing customers a favor that way. (You know, like his belief that a one button mouse made the computer easier to use and was all anyone needed?) After all, the less capable graphics cards did put out less heat, tended to have less noisy cooling fans attached to them, and drew less power.
But in 2016, I just don't get why Apple is still known for sub-par graphics performance while at the same time, being recognized as the preferred computer choice for creative/artistic types?
Back when the G4 Cube came out, people were upset that graphics card options were limited because Apple felt the small case size was more important than providing room for full length graphics cards that performed better. And we're still seeing the same line of thought today. At the very least, the Mac Pro should have an option to attach an external enclosure that houses a pair of "crossfired" PCIe graphics cards, linked via Thunderbolt, for those wanting/needing more graphics performance. (Heck ... that same option could work for a Macbook Pro or iMac to drive external displays.) Ideally, they'd at LEAST put the best, fastest mobile GPU possible in each laptop as one possible configuration option.
"Apple's Mac Lineups to See Significant Graphics Upgrades as New GPU Launches Loom"
THE ANSWER IS NO!
Remember the 2013 MacPro with the crappy D300, D500 and D700?
Remember the even crappier M370x in the 2015 Macbook Pro??? Let us not forget: With the M370x they actually put in a two year old ATI GPU instead of using the fast and efficient Nvidia M970 (which most competitors did use with laptops costing half as much)!
Also WHY CRAPPY ATI??? Go to the forum section of this site and read the disaster called bootcamp driver support for ATI graphics card... Compare that to Nvidia - you can actually download updated Nvidia driver for bootcamp on their website (or even drivers for Mac OS when you use an old tower Mac Pro with for example a new 980Ti).
You know - I really like Apple Laptops - but the GPU's always were sub-par.... especially the ATI GPU's