Even 8GB will be fine for years at 1440p. Especially without Ray Tracing enabled. Pretty much no game uses over 6GB completely maxed at 1440p (however cards with 16-24GB _can_ allocate more than 6GB here, but 8GB cards will do fine).Ah yes. I wasn't aware of this when I made my post and was going on Steve's assertion that 10gb would probably be fine for years to come, made, I dunno, six months or a year ago. Bit annoying as I got the original 3080. But then I should count myself lucky to have any 3080.
10GB also fine for 4K/UHD gaming - the GPU power will be a problem before memory is.
And this is why you don't make overkill on memory. Alot of memory is not going to save a weak GPU.
FSR and DLSS even lowers memory usage.