I'm looking to upgrade my old graphics card sometime this year. My old suite of benchmark games (Portal 2, Dolphin upscaled to 1080p, and several others) are all things I can run right now at max or near-max settings while getting consistent 60fps at 1080p - The highest settings my monitor supports.

What good benchmark games have a native Linux version? I do have a Windows 7 install, but some of my hardware support was hacked together and it often bluescreens at boot.

I would of course prefer it if the game in question is either on GOG or if it's free software (Dolphin, PCSX2), but I'll take a Steam game if I have to.

Well, Dolphin does have a native port, Retroarch might be a good choice.

Shadow of the Tomb Raider and Deus Ex: Mankind Divided have native Linux-versions on Steam. They can push pretty juicy graphics and have built-in benchmarks. This goes for the two previous Tomb Raider games too.

Thanks for the reply! I checked both out and decided to put Deus Ex on my wishlist and wait for the sale (or when I decide on my card, whichever comes first). It's a real shame the Linux port never made it to GOG, though from what I could dig up it seems like it's not for lack of trying by GOG's staff and customers. I've only ever played the original Deus Ex from 2000, I hope the new game(s) hold up to the original's brilliance. I mentioned Dolphin, and Retroarch has always struck me as pointless (a fancy GUI for other emulators? Why?), but it does occur to me now that I've never even tried to run RPCS3 or Yuzu. Maybe I'll check to see if the Xenoblade remake is any better than the Wii version sitting on my shelf, or if RPCS3 will actually run my PS3 games without the HDMI port randomly breaking and needing a reflow like my real PS3 is fond of doing.

And keeping in mind, even if it is a fancy GUI, it is also a CENTRAL GUI.

Possibly Wastleland 3, if we are strictly talking about games and/or ports being available on GOG.

I know, strictly speaking, these are not games but I have them in my repository so you probably do too:

https://benchmark.unigine.com/

Even that old Heaven can put your computer in its place. I used that to tweak my settings and test to make sure my bottleneck lied squarely with the graphics card, as it should when you pay less for the GPU than for the motherboard.