The highest display resolution of the Inspiron 15 5545 is 1366 x 768 pixels. That's 49% less display resolution than a 1920 x 1080 pixels notebook PC, which is the most common display resolution.
This portable PC's display resolution (1366 x 768 pixels) is actually the worst display resolution amongst all notebook PCs of a similar spec and age to the Inspiron 15 5545.
The best display resolution across similar types of portable PC is 1920 x 1080 pixels.
There are a number of alternative notebook PCs that have a display resolution of 1366 x 768 pixels currently available that you might also want to consider including the Lenovo IdeaPad Z50-75, the DELL Latitude 11 3150, or the HP 250 which has a better Rating.
If you would prefer a laptop with a higher display resolution then you might want to consider the Precision M4800 (1920 x 1080), or the Precision M3800 (1920 x 1080) both from DELL or the Acer Aspire VN7-591g (1920 x 1080) which also has a higher rating.