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Version 10 (modified by alas, 5 years ago) (diff)

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DPI Data


Data collected to try to help understand Operating System DPI settings.

MS Windows

Monitor specific data (also depends on graphics card, cable, ..).

Graphics Card Monitors Cables Resolution Vertical Refresh
Intel HD Graphics 4000 Dell P2815Q DP-Thunderbolt 3820x2160 29
Intel HD Graphics 4000 HP ZR2740w IPS DP-Thunderbolt 2560x1440 59
Intel HD Graphics 4000 Dell P2815Q + HP ZR2740w IPS DP-Thunderbolt + DVI-HDMI 3820x2160 + 1280x720 29

(the vertical refresh rate uses the slowest link - which makes sense)

Unless stated otherwise, the same monitor settings were used for collecting the data.


Data collected using Native_gui.exe.

Text Size dpi cursor_size window_frame.caption window_frame.frame window_frame.menu-bar window_frame.minimum window_frame.normal window_frame.offset
100% (Smallest) 96 32 23 8, 8, 31, 8 20 140, 39 8, 8 8, 31
125% 120 32 29 9, 9, 38, 9 25 178, 47 9, 9 9, 38
150% 144 48 34 11, 11, 45, 11 30 210, 56 11, 11 11, 45
200% 192 64 45 13, 13, 58, 13 39 274, 71 13, 13 13, 58
250% 240 64 56 16, 16, 72, 16 49 340, 88 16, 16 16, 72

Workarea information (with the taskbar shown at the bottom of the screen):

  • Dell P2815Q at 3840x2160:
Text Size Total/ Detected Workarea
100% 0, 0, 3840, 2120
125% 0, 0, 3840, 2112
150% 0, 0, 3840, 2104
200% 0, 0, 3840, 2088
250% 0, 0, 3840, 2072
  • HP ZR2740w IPS at 2560x1440:
Text Size Total/ Detected Workarea
100% 0, 0, 2560, 1400
125% 0, 0, 2560, 1392
150% 0, 0, 2560, 1384
200% 0, 0, 2560, 1368
250% n/a
  • Dell P2815Q at 3820x2160 & HP ZR2740x IPS at 1280x720:
Text Size Total/ Detected Workarea Displayed/ Detected Workarea 1 Displayed/ Detected Workarea 2 Total/ Detected Workarea with single scaling for all displays Displayed/ Detected Workarea 1 with single scaling Displayed/ Detected Workarea 2 with single scaling
100% 0, 0, 5120, 2120 0, 0, 3840, 2120 0, 0, 1280, 680 0, 0, 5120, 2120 0, 0, 3840, 2120 0, 0, 1280, 680
125% 0, 0, 5440, 2112 0, 0, 3840, 2112 0, 0, 1600, 840 0, 0, 5120, 2112 0, 0, 3840, 2112 0, 0, 1280, 672
150% 0, 0, 5760, 2104 0, 0, 3840, 2104 0, 0, 1920, 996 0, 0, 5120, 2104 0, 0, 3840, 2104 0, 0, 1280, 664
200% 0, 0, 6400, 2088 0, 0, 3840, 2088 0, 0, 2560, 1440 0, 0, 5120, 2088 0, 0, 3840, 2088 0, 0, 1280, 648
250% 0, 0, 7040, 2072 0, 0, 3840, 2072 0, 0, 3200, 1800 0, 0, 5120, 2072 0, 0, 3840, 2072 0, 0, 1280, 632

From this we can infer that the size of the taskbar (which reduces the available workarea) does not change with the monitor resolution, only the text size (but it may be affected by scaling, no data available to confirm):

Text Size Taskbar Size
100% 40
125% 48
150% 56
200% 72
250% 88