AMD or NVIDIA.

OC'd 980 Ti 4k @60 with most settings either on high or ultra (no aa)

DOOM has not been working for me the past couple of days and just got it working so I wanted to share some info for those of you facing similar issues

Doom no matter how I launch it(admin,exe,shortcut,steam) it would stop at loading so after messing with it for a while now I rolled back the newest AMD driver to the last one now it works

my specs
i5 4570
12g Ram
AMD R9 290X
2TB HDD

My CPU and GPU

CPU: I3-4360 @ 3.70 GHz

GPU: AMD Radeon R9 380 4GB

Works very well.

If you want better performance for DOOM 4 and don't want to break the bank, stick with AMD.

Vulkan is heavily based off of AMD's Mantle tech (as is DirectX 12). All AMD cards with the GCN 1.0+ architecture were built for Vulkan/DX12. My 4 year old HD 7950 runs the game solid 90+ fps with Vulkan, and my R9 Nano hits the 200 fps cap occasionally.

The RX 480 just came out early July. It is the AMD equivalent of the GTX 980/1070, and even exceeds it at times. Its also only $200 for the 4gb version - half the price of a 1070. In DOOM 4, the RX 480 beats out the 980 in Vulkan and is on par with the 1070.

Nvidia GPUs do not have hardware Async. AMD GCN 1.0+ cards do; therefore, they benefit exponentially more from DX 12 and Vulkan than Nvidia cards do.

Also, you're gonna see a lot of GTX 970 cards drop in price - AVOID THEM unless you are okay with false advertising (they are truly 3.5gb cards, not 4gb) and want to gamble with low GPU usage issues. I think there's still a thread on the Nvidia forums regarding the GTX 970 and the gpu usage problem that has hit 300+ pages. That's just downright irresponsible.

If you don't mind not being futureproof, pick up an NVidia gpu if you find it cheaper than a modern AMD gpu. Otherwise, let Nvidia learn from their mistakes for a bit with drops in sales, and force them to improve.

The Linux VGA-passthrough world has already dumped Nvidia in favor of AMD as well.

You can google all the above if you want to verify.