Extreme High Definition
Encyclopedia
Extreme High Definition, or XHD, is a term coined by Nvidia
and Dell
at the Consumer Electronics Show
2006 to emphasize gaming at resolutions higher than high definition
. The term was created as a marketing term for Nvidia
's Quad SLI
setup and Dell
's 3007WFP monitor
.
According to Nvidia
, XHD is achieved by using one or two dual-link DVI
ports. This higher bandwidth
allows the cards to reach a maximum resolution of 2560x1600. The resolutions 1920x1200 and 1680x1050 are also classed as XHD resolutions, even though they do not match the XHD specification of 4x1080i
/ 2x1080p
stated on the XHD site. (see: Nvidia's Extreme HD Site)
For several months, the only device which output this as its native resolution was Apple's 27-inch iMac. As of February 10, 2010, Dell has introduced a 27" 1440p display.
NVIDIA
Nvidia is an American global technology company based in Santa Clara, California. Nvidia is best known for its graphics processors . Nvidia and chief rival AMD Graphics Techonologies have dominated the high performance GPU market, pushing other manufacturers to smaller, niche roles...
and Dell
Dell
Dell, Inc. is an American multinational information technology corporation based in 1 Dell Way, Round Rock, Texas, United States, that develops, sells and supports computers and related products and services. Bearing the name of its founder, Michael Dell, the company is one of the largest...
at the Consumer Electronics Show
Consumer Electronics Show
The International Consumer Electronics Show is a major technology-related trade show held each January in the Las Vegas Convention Center, Las Vegas, Nevada, United States. Not open to the public, the Consumer Electronics Association-sponsored show typically hosts previews of products and new...
2006 to emphasize gaming at resolutions higher than high definition
High-definition television
High-definition television is video that has resolution substantially higher than that of traditional television systems . HDTV has one or two million pixels per frame, roughly five times that of SD...
. The term was created as a marketing term for Nvidia
NVIDIA
Nvidia is an American global technology company based in Santa Clara, California. Nvidia is best known for its graphics processors . Nvidia and chief rival AMD Graphics Techonologies have dominated the high performance GPU market, pushing other manufacturers to smaller, niche roles...
's Quad SLI
Scalable Link Interface
Scalable Link Interface is a brand name for a multi-GPU solution developed by NVIDIA for linking two or more video cards together to produce a single output...
setup and Dell
Dell
Dell, Inc. is an American multinational information technology corporation based in 1 Dell Way, Round Rock, Texas, United States, that develops, sells and supports computers and related products and services. Bearing the name of its founder, Michael Dell, the company is one of the largest...
's 3007WFP monitor
Computer display
A monitor or display is an electronic visual display for computers. The monitor comprises the display device, circuitry, and an enclosure...
.
According to Nvidia
NVIDIA
Nvidia is an American global technology company based in Santa Clara, California. Nvidia is best known for its graphics processors . Nvidia and chief rival AMD Graphics Techonologies have dominated the high performance GPU market, pushing other manufacturers to smaller, niche roles...
, XHD is achieved by using one or two dual-link DVI
Digital Visual Interface
The Digital Visual Interface is a video interface standard covering the transmission of video between a source device and a display device. The DVI standard has achieved widespread acceptance in the PC industry, both in desktop PCs and monitors...
ports. This higher bandwidth
Bandwidth (computing)
In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it .Note that in textbooks on wireless communications, modem data transmission,...
allows the cards to reach a maximum resolution of 2560x1600. The resolutions 1920x1200 and 1680x1050 are also classed as XHD resolutions, even though they do not match the XHD specification of 4x1080i
1080i
1080i is the shorthand name for a high-definition television mode. The i means interlaced video; 1080i differs from 1080p, in which the p stands for progressive scan. The term 1080i assumes a widescreen aspect ratio of 16:9, implying a frame size of 1920×1080 pixels...
/ 2x1080p
1080p
1080p is the shorthand identification for a set of HDTV high-definition video modes that are characterized by 1080 horizontal lines of resolution and progressive scan, meaning the image is not interlaced as is the case with the 1080i display standard....
stated on the XHD site. (see: Nvidia's Extreme HD Site)
Extreme Definition
A related term is Extreme Definition (or XD). This is a term used on the Internet , referring to the 1440p - 2560x1440 - resolution. The term was formulated with Extreme High Definition in mind, since both standards share the 2560 pixel horizontal resolution. To avoid confusion between the two resolutions, however, the word high was left out.For several months, the only device which output this as its native resolution was Apple's 27-inch iMac. As of February 10, 2010, Dell has introduced a 27" 1440p display.