AMD Perf 4K-1440p
Let’s start by looking at AMD video cards only first, and compare DX11 to Vulkan performance in Ghost Recon Breakpoint. We are going to separate the video cards by resolution, and only show the ones relevant to that resolution.
4K
First up is the fastest video card AMD has, the AMD Radeon RX 5700 XT, but at 4K. We are running 4K with the highest game setting “Ultimate” in the benchmark. You will notice the DX11 performance is averaging 30FPS and running in Vulkan improves performance by 13%. It isn’t enough to make the Radeon RX 5700 XT playable at 4K with the highest settings, but at least as this very high VRAM bottlenecked setting we are still seeing a performance gain under Vulkan.
In this second 4K comparison we have dropped the game settings down to “Ultra.” The reason for this was that at “Ultra” the VRAM counter in the game was no longer in the red and exceeding the VRAM limitation. It appears though that even with this Vulkan is only about 4% faster. Let’s move down to 1440p though, because the Radeon RX 5700 XT is just not very powerful for this game at 4K.
1440p
In this first graph, we are showing the Radeon RX 5700 XT and Radeon RX 5700 at 1440p and the highest “Ultimate” setting. We definitely see better results here than we saw at 4K. Vulkan is 8% faster on the Radeon RX 5700 XT compared to DX11 and it is 7% faster on the Radeon RX 5700. Thinking we are again perhaps VRAM bottlenecked, we wanted to lower the resolution and see what happens.
In this graph, we have lowered the resolution down to 1080p, but still at “Ultimate” game settings. Wow, here now we are seeing much bigger advantages with Vulkan over DX11. On the Radeon RX 5700 XT Vulkan is 22% faster than DX11 and on the Radeon RX 5700 Vulkan is 15% faster than DX11. This shows that at more “CPU Dependent” settings, Vulkan shines more, as it is supposed to. It really works.