Yes. Those calculators are largely nonsense as they can't possibly take into account the system configuration and in game settings. For example, say you have a 1080p monitor, if you run at a 1080 screen resolution you might get a higher bottleneck as the CPU is taking the work, however if you force the card to work at higher resolutions (which then sample down to 1080 for your monitor), your card takes over the grunt and the bottleneck drops substantially. It sounds way more complicated than it actually is, but like I explained in one the console threads about the new machines, pushing these things harder actually gets you way better results.
For example, my 3070 on an 6 year old i7 is bottlenecking, however those sites said up to 40% (and it can't run at 1080
)and I'm getting actually getting around 10% at most. And even then, even at 40%, it's still a massive upgrade and lets me chill until next year to decide what CPU I want. I'm certainly in no rush though, as my ancient rig now beats the consoles in power. Comfortably too.