GPU Comparison Data

GPU comparisons by brand, model, framerate and price.
Brand	GPU	Avg. FPS at 1080p	Price
Nvidia	GTX 1080 Ti	129.2	$807
Nvidia	TITAN Xp	125.8	$1,199
AMD	RX 560	N/A
AMD	Radeon VII	126	$664
Nvidia	RTX 3060	124.3	$329

Conclusions:

The most expensive GPU, the TITAN Xp, does not actually have the best performance
The cheapest GPU, the RTX 3060, is only 1.5 frames slower on average than the most expensive GPU.
The Radeon VII is $143 cheaper than the GTX 1080 Ti but only gets 3.2 less frames on average.