Monitorture31.5″ monitor: QHD vs 4K UHD vs 6K
A 31.5″ monitor is the same physical size — about 27.5″ wide by 15.4″ tall — whatever resolution you pick. What changes is pixel density: more pixels in that fixed area means smaller pixels, sharper text and finer detail. Here's how QHD vs 4K UHD vs 6K compare on a 31.5″ screen.
| Resolution | Pixels | PPI | Pixel pitch | How it feels |
|---|---|---|---|---|
| QHD | 2560 × 1440 | 93 | 0.272 mm | On the coarse side — pixels and soft text are visible |
| 4K UHD | 3840 × 2160 | 140 | 0.182 mm | Sharp — you may prefer slight UI scaling |
| 6K | 6016 × 3384 | 219 | 0.116 mm | Very sharp — best with OS scaling |
Which resolution should you get at 31.5″?
Because the diagonal is fixed, a higher resolution doesn't make the screen bigger — it makes each pixel smaller, so text and edges look crisper. The trade-off is that the interface also shrinks: past roughly ~150 PPI you'll usually want to turn on OS scaling to keep menus and text readable.
For a normal desk viewing distance, about ~95–120 PPI is the comfortable band where the UI reads well at 100% scaling. On a 31.5″ panel that means QHD sits at ~93 PPI (on the coarse side — pixels and soft text are visible), while 6K reaches ~219 PPI (very sharp — best with OS scaling) — same screen, noticeably different sharpness.
Viewing distance matters too: the farther you sit, the less a lower PPI shows, so a higher resolution pays off most when the screen is close.