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On displays with a fixed refresh rate, a frame can only be shown on the screen at specific intervals, evenly spaced apart. If a new frame is not ready when that interval arrives, then the old frame is held on screen until the next interval (stutter) or a mixture of the old frame and the completed part of the new frame is shown ().
Microsoft Windows 95 and Windows 98 (First and Second Editions) set the refresh rate to the highest rate that they believe the display supports. Windows NT -based operating systems, such as Windows 2000 and its descendants Windows XP , Windows Vista and Windows 7 , set the default refresh rate to a conservative rate, usually 60 Hz.
The exact refresh rate necessary to prevent the perception of flicker varies greatly based on the viewing environment. In a completely dark room, a sufficiently dim display can run as low as 30 Hz without visible flicker. [citation needed] At normal room and TV brightness this same display rate would produce flicker so severe as to be unwatchable.
4:3 (or 16:5 and 16:10 with square pixels) 2–4 bpp for ST, 2–15 bpp on the Falcon. CGA: Color Graphics Adapter Introduced in 1981 by IBM, as the first colour display standard for the IBM PC. The standard CGA graphics cards were equipped with 16 kB video RAM. [1] 640×200 (128k) 320×200 (64k) 160×200 (32k) 640 200 128,000 16:5 16:10/8:5
That eliminates the stutter that occurs as the rendering engine frame rate drops below the display's refresh rate. [4] Alternatively, technologies like FreeSync [5] and G-Sync [6] reverse the concept and adapt the display's refresh rate to the content coming from the computer. Such technologies require specific support from both the video ...
In these contexts, frame rate may be used interchangeably with frame frequency and refresh rate, which are expressed in hertz. Additionally, in the context of computer graphics performance, FPS is the rate at which a system, particularly a GPU , is able to generate frames, and refresh rate is the frequency at which a display shows completed ...
The most significant improvement of this version is the doubling of the data rate to 17.28 Gbit/s in High Bit Rate 2 (HBR2) mode, which allows increased resolutions, higher refresh rates, and greater color depth, such as 3840 × 2160 at 60 Hz 10 bpc RGB.
The GPU, [3] or graphics processing unit, is the unit that allows the graphics card to function. It performs a large amount of the work given to the card. The majority of video playback on a computer is controlled by the GPU. Once again, a GPU can be either integrated or dedicated.