Video Memory

Video memory is RAM installed on a video adapter. Before an image can be sent to a display monitor, it is first represented as a bit map in an area of video memory called the frame buffer. The amount of video memory, therefore, dictates the maximum resolution and color depth available.

With a conventional video adapter, the bit map to be displayed is first generated by the computer’s microprocessor and then sent to the frame buffer. Most modern video adapters, however, are actually graphics accelerators. This means that they have their own microprocessor that is capable of manipulating bit maps and graphics objects. A small amount of memory is reserved for these operations as well.

Because of the demands of video systems, video memory needs to be faster than main memory. For this reason, most video memory is dual-ported, which means that one set of data can be transferred between video memory and the video processor at the same time that another set of data is being transferred to the monitor. There are many different types of video memory, including VRAM, WRAM, RDRAM, and SGRAM.

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

Related Articles

Human Resources Management System

A Human Resources Management System (HRMS) is a software application that supports many functions of a company's Human Resources department, including benefits administration, payroll,...

How To Defend Yourself Against Identity Theft

Almost every worldwide government agency responsible for identity theft issues will tell you the same thing: The first step to fighting identity theft is...

Infographic

An infographic is a visual representation of information or data. It combines the words information and graphic and includes a collection of imagery, charts,...

Phishing

What is phishing? Phishing is a type of cybercrime in which victims are contacted by email, telephone, or text message by an attacker posing as...

ScalaHosting

ScalaHosting is a leading managed hosting provider that offers secure, scalable, and affordable...

HRIS

Human resources information system (HRIS) solutions help businesses manage multiple facets of their...

Best Managed Service Providers...

In today's business world, managed services are more critical than ever. They can...