ive been running a reference 6800 for near on 2yrs. Absolute baller of a card for 1440p gaming.
Same here - running one at 3440x1440 and easily handles everything I throw at it, pretty good at 4k as well.
A couple of games I have played recently:
Metro Exodus EE with a mix of high/medium settings @ 3440x1440 ~80fps
RDR2 with a mix of high/ultra settings @ 4k ~70fps
Kingdom Come: Deliverance with high preset @ 3440x1440 ~90fps
The only game it has "struggled" in has been CP2077, had to drop to 1440p with high settings and low RT to maintain 40fps, without RT I could hit 60 (my TV only goes to 60hz, so maybe it would go higher), or bump it up to 4k and hit ~40-50fps
You'll get an extra bit of performance out of it if you pair it with an AMD CPU for SAM, and it undervolts/overclocks quite nicely too - iirc I got ~10% FPS boost (although I did have to tweak the fan curve to keep the temperatures down, so it was "a bit" noisier with that profile
