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With a Macintosh Processor Upgrade Card installed, this computer is known as the Power Macintosh 950. In 1993, the 950 was overtaken in performance by the less expensive Quadra 800 and 840AV . The newer Quadras had the addition of interleaved RAM, as well as an enhanced video system and SCSI bus.
Video random-access memory (VRAM) is dedicated computer memory used to store the pixels and other graphics data as a framebuffer to be rendered on a computer monitor. [1] It often uses a different technology than other computer memory, in order to be read quickly for display on a screen.
Dual-ported video RAM (VRAM) is a dual-ported variant of dynamic RAM (DRAM), which was once commonly used to store the framebuffer in graphics adapters. Dual-ported RAM allows the CPU to read and write data to memory as if it were a conventional DRAM chip, while adding a second port that reads out data.
The Macintosh Quadra 650, originally sold as the Macintosh Centris 650, is a personal computer designed, manufactured and sold by Apple Computer from February 1993 to September 1994. The Centris 650 was introduced alongside the smaller Centris 610 as the replacement for the Macintosh IIci and Quadra 700 , and it was intended as the start of the ...
The LC's memory management chipset places a limit of 10 MB RAM no matter how much was installed. The LC shipped with 256 kB of VRAM, supporting a display resolution of 512×384 pixels at 8-bit color. The VRAM is upgradeable to 512 kB, supporting a display resolution of 512×384 pixels at 16-bit color or 640×480 pixels at 8-bit color.
The Macintosh Performa 6260CD, as sold in Japan. The Power Macintosh 6200 (also sold under variations of the name Performa 6200, Performa 6300 and Power Macintosh 6300) is a series of personal computers designed, manufactured, and sold by Apple Computer from May 1995 to July 1997.
A computer draws on its display by writing a bitmapped representation of the graphics into a special portion of its memory known as video memory. Without any hardware overlays, only one chunk of video memory exists which all applications must share - and the location of a given application's video memory moves whenever the user changes the ...
The display is capable of supporting up to thousands of colors with a video memory upgrade. A slightly updated model, the Color Classic II , featuring the Macintosh LC 550 logic board with a 33 MHz processor, was released in Japan, Canada and some international markets in 1993, sometimes as the Performa 275.