We need to be very specific when talking about Apple hardware vs PC. Traditionally 2 things have been true
Apple excels at All-in-Ones and falters in desktops choices
PC excels at desktops and falters with All-in-Ones choices
As crazy as it sounds to buy a iMac and install Windows on it if you really look at the All-in-One market PC is lacking a lot. Compare something like a MicroSoft Studio Surface and the specs are terrible for the cost. Though there have been some recent entries to the All-in-One market for PCs such as the Dell XPS 27(though i've read about lots of issues) and the Digital Storm Aura. Also need to account for the fact that selling used iMacs are very easy and you can retain a lot of value unlike a PC.
I think if anyone want to buy the Digital Storm Aura, they are much better off buying the iMac Pro.
Given these testing results, I feel that iMac Pro is actually a pretty solid gaming machine, at least at a 5K level. Let's see it this way, if Digital Storm Aura has 34 inch 60Hz screen, the iMac Pro has a 5K 60Hz screen, in term of refresh rate, it is the same, unless you want a bigger, but then you sacrifice the resolution.
If someone wants a PC, they should get a 1080Ti GPU and a 34inch curved monitor with at least 100Hz rate. If Digital Storm Aura has such a thing, I probably will get that.
For the other specs, Digital Storm Aura uses 1080, NOT the 1080Ti, in my opinion, the Vega 56 or 64 is not necessary far from behind, given the right drivers, it will actually excel. For the other specs, I think the iMac Pro just beat the Digital Storm Aura.
Now, if you can get a discount of the iMac Pro for $3999, clearly, it is a better deal than the Digital Storm Aura.
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I'm assuming you didn't buy this machine just to play Diablo 3?

[doublepost=1519731928][/doublepost]Guys, Microsoft have a machine that can kill the Mac Pro in every game. It's called and Xbox.
*** and yes I am poking fun because I bought a nMP a few years ago and discovered for myself just how bad it was at gaming ***
Diablo III, and subsequently World of Warcraft were the ones that triggered me to buy a gaming PC. I wanted to play game again, so I first installed Diablo III on my iMac 5K 2014 in Mac OS, it is unpleasant to play with due to the slowness, then I installed Windows 10, but it couldn't play at 5K resolution, the machine will "hang" and I will get booted out of the game or disconnect easily. I lower the resolution to 2560x1440p and a lower graphic settings, it then became much smoother, but many times, I will still get booted out of the game when the fans became noisy. I realize I couldn't enjoy gaming on my iMac 5K 2014, I searched for answers and realized that many other iMac players faced the same issues, so it looks like it could be Diablo III not well optimized?
Disappointed with Diablo III, I decided to go back to play World of Warcraft after a 4 year hiatus, I installed it in Mac OS on the same iMac, I realized that I faced the same issues, my setting could not go beyond 6/10 at 5K. At 1440p, it is a must to have max AA turned on otherwise everything looks blurry, at max AA, I still cannot go beyond 6/10, it is only optimal around 5/10. At 5/10, though the game is very playable, I cannot say the graphic is enjoyable, in addition, there are slowness and stuttering at time. The tiles on the floor in Stormwind is not great to look at.
Felt disappointed I couldn't use my iMac 5K 2014 to play game, yet at the same time, I really just want to immerse myself in games just as a hobby, it was my dream since I was a kid. I decided to go all out to get a Corsair One 1080Ti with an Alienware 34 inch 120Hz, voila, everything works. Diablo III and WOW are playable at all max settings with no adjustment needed on my part, the game looks stunning at 120FPS at almost all time on the top of the ultra-wide experience, it gave me a significant upgraded experience coming from the iMac 5K 2014, it is like moving from Economy Class to Suit Class in an A380.
Then I realized that I hate those cables, my desk is not as minimalistic anymore, the reason I got the iMac is because I really love the minimalistic clean look on my desk. Based on almost every reviews and comments I saw on Youtube and forums, most people concluded that the iMac Pro is probably an OK gaming machine, there are not much information with the games I played. So I started some threads here seeking opinions. This is when it prompted me to get one to try it out myself and I am glad that I actually did, the results were impressive and much better than I expected.
So which is better at gaming, the Corsair One 1080Ti with an Ultra-Wide 34 inch 120Hz 120FPS vs the iMac Pro 5K at 60Hz 60FPS? I come to realize that both provided a difference type of gaming experience. There is something with the ultra-wide that suck you into the game, there is also something with the 120FPS that make your eyes feel smooth. But there is also something great about playing at 5K 60FPS...the color are most stunning on the 5K iMac, it is like the eyes having an orgasm, but because of the 120FPS experience that I got used to in the last 10 days, you definitely can sense the very subtle slowness on a 60FPS that most people wouldn't be able to tell if they never seen a 120Hz monitor, you feel that you can't go back to a 60FPS. I seriously wish that I had never seen a 120Hz monitor, and I will be happy living with the fact that the iMac Pro is the greatest 5K gaming machine.
If you decide to get the iMac Pro for gaming, please do not take a look at any 120Hz Ultra-wide monitor. You can never unseen it.
Both are great machines! I wish there is a 5K ultra-wide 34 inch with at least 100Hz running Mac OS....that will be the dream gaming machine.