Oussebon
Multiverse Poster
Some sites also do performance analyses of specific titles, comparing low, medium, high, ultra:
Comparisons tend to be at 1080p, but it can give you an idea of what settings to drop down a notch for the best performance gains with little to no quality loss.
Other sites do performance analyses of various titles too:
Rage 2 system requirements, benchmarks, and performance analysis
Here's what sort of CPU and GPU you'll need to get Rage 2 running at 60fps or even 144fps.
www.pcgamer.com
Gears 5 system requirements, settings, benchmarks, and performance analysis
Gears 5 is more demanding than Gears 4, but it can still run on a wide range of hardware.
www.pcgamer.com
Comparisons tend to be at 1080p, but it can give you an idea of what settings to drop down a notch for the best performance gains with little to no quality loss.
Other sites do performance analyses of various titles too:
PC Performance Analyses Archives - DSOGaming
www.dsogaming.com
TechPowerUp
www.techpowerup.com