FHD stands for Full High Definition, which is a screen resolution of 1920 x 1080 pixels. It's also commonly referred to as 1080p resolution. QHD stands for Quad High Definition, and it has a screen resolution of 2560 x 1440 pixels. Just like 1080p, QHD is referred to as 1440p resolution.

In comparison to Full HD displays, QHD screens offer a substantially higher pixel density, producing crisper images and text. QHD has a resolution of 2,560 by 1440 pixels. The QHD delivers substantially crisper visuals due to increased resolution since Full HD is 1920 x 1080p.

QHD screens are noticeably sharper than Full HD (FHD), aka 1080p resolution (1920 x 1080) models, which are much more common and cheaper. This higher resolution also makes going to screens larger than 27 inches without seeing individual pixels more feasible when shopping for a PC monitor.

The key difference lies in the resolution and pixel density. FHD has a resolution of 1920×1080 pixels, while QHD has 2560×1440 pixels. This alone makes a huge difference in: 1. Screen Real Estate 2. Better Multitasking with Higher Resolution 3. Sharper Text and Better Visuals 4.