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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 RAM variant of dynamic RAM (DRAM), which was once commonly used to store the Framebuffer in Graphics card, . 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 Intel 8080 used by these computers was an 8-bit processor, with 16-bit address space, which allowed it access up to 64 KB of memory; .COM executables used with CP/M have a maximum size of 64 KB due to this, as do those used by DOS operating systems for 16-bit microprocessors.
The original IBM EGA was an 8-bit PC ISA card with 64 KB of onboard RAM. An optional daughter-board (the Graphics Memory Expansion Card) provided a minimum of 64 KB additional RAM, and up to 192 KB if fully populated with the Graphics Memory Module Kit. [22] Without these upgrades, the card would be limited to four colors in 640 × 350 mode. [23]
The Infinity Cache is made up of two sets of 64 MB cache that can run on its own clock rate independent from the GPU cores. The Infinity Cache has a peak internal transfer bandwidth of 1986.6 GB/s and results in less reliance being placed on the GPU's GDDR6 memory controllers. [ 8 ]
RAM: 4 MB built-in (expandable to a maximum of 8 or 12 MB using an optional 4 MB or 8 MB Compaq branded module, or 20 MB using a third party 16 MB module) 256 KB video memory (512 KB exists in the system, but is not accessible by the GPU.) 84 MB, 170 MB or 250 MB 2.5" IDE hard disk drive; 1 PCMCIA slot (Type II) 1 ECP/EPP 1.9 capable parallel port
Increasing memory bandwidth, even while increasing memory latency, may improve the performance of a computer system with multiple processors and/or multiple execution threads. Higher bandwidth will also boost performance of integrated graphics processors that have no dedicated video memory but use regular RAM as VRAM .
Each card has 128 KB flash memory; OS support for File Save, Retrieve and Remove [11] Some games (like "Music 2000") can use Memory Cards as main RAM, to store data for real time processing, bypassing the 2MB RAM limit. [citation needed] Video and audio connectivity. AV Multi Out (Composite video, S-Video, RGBS)