No one can guess your visual acuity but it's sure that increasing the size without adding pixels will eventually let you see some pixels.
But if Dell is not answering product questions, why would you consider their products?
Hope this is the correct forum but right now I use a 23 inch Dell S2340M and I love everything about it, just want a larger screen. I see these Dell 27 inch models with the same 1920x1080 resolution as my 23 inch: E2715H, P2714H, S2715H, S2740L, UZ2715H. First off, will the larger screen size along with the same resolution as my 23 inch, mean the display wont appear as sharp? And what are the differences in the those 5 models? Do the model numbers have a meaning? I assume 27 means 27 inch. Does 14 or 15 refer to the year it was introduced? What about the E,P,S,U prefix or H,L suffix?
What are the differences in the higher resolution 2560x1440 models: P2715Q, U2713H, U2713HM, U2715H. Does the higher resolution mean they will be as sharp or better than my 23 inch model?
And what about P2715Q with 3840x2160 resolution? Or a 30 inch model, 3007WFP? Thanks for any advice.