11/19/2022 0 Comments Opengl 4.5 or vulk3an![]() ![]() The 2GB VRAM cards also tend to be a bit more prone to hiccups in testing, or simply have higher variance here the 960 2GB drops by nearly 10 percent, but the 950 (also 2GB) shows a barely perceptible dip. The GTX 1080 does get a decent 10 percent boost, but all the other cards are pretty much within the margin of error. Running a game like Doom at 1440p Ultra usually makes the GPU the bottleneck, and that's basically what we're seeing. Vulkan basically elevates AMD's GPUs from seriously lackluster positioning in Doom to being right in the mix. The 980 Ti, Fury, and Nano all cluster together, followed by another grouping of the 980, 480, and 390-in that order. Pulling back to talk about the entire spectrum, Nvidia's 10 still claim the top spots, with the Fury X effectively tying the 1070. ![]() The 1060 has a small drop, while other cards show a 10-20 percent improvement-the 1080 even shows a 50 percent improvement, and I should note that the 1080 is frequently hitting the 200 fps frame rate cap that Doom imposes, so potentially it could run faster. Vulkan does generally improve minimum frame rates, and only the 950 shows a clear drop in minimum fps. The 2GB 960 also shows a small drop, and interestingly the 1060 does as well-perhaps the 368.64 drivers aren't fully baked, or it might just be variance between runs. We do see a few performance regressions, and the GTX 950 shows a nearly 10 percent drop with Vulkan. The GTX 1080 performance goes up by 20 percent, the 1070 improves by 10 percent, and most of the remaining cards fall within the margin of error. In contrast to AMD's hardware, Nvidia's showing with Vulkan is a lot more mixed. Testing the same card at the same settings multiple times gives a variance of around four percent, so anything less than that can be considered equivalent performance-not that you'd really notice anything below ten percent anyway. I do my best to run the same path each time, but there are minor variations depending on where the demons show up. Basically, I play a 150 second sequence (give or take) where I run though a section of the game and fight a bunch of hellspawn. One thing to note is that my Doom benchmark sequence uses FRAPS for OpenGL and PresentMon for Vulkan, and there is a bit more variance between benchmark runs than some other games.
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