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Topic: Video RAM

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	Video RAM - Wikipedia, the free encyclopedia
		Video RAM (VRAM) is a term generally used in computers to describe RAM dedicated to the purpose of displaying bitmap graphics in raster graphics hardware.
		Video RAM is usually physically separate from the main RAM residing in a computer system.
		As the computer busses also improved in speed the CPU was able to "squirt" its updates to the video display's own memory at such high speed that it could be timed to do all of its updates in the short periods when the video hardware was idle, during the vertical blank interrupt for instance.
	en.wikipedia.org /wiki/VRAM (309 words)

	video RAM - a Whatis.com definition - see also: VRAM (Site not responding. Last check: 2007-10-09)
		Video RAM (VRAM) means in general all forms of random access memory (RAM) used to store image data for a computer display.
		Video RAM is really a buffer between the computer processor and the display and is often called the frame buffer.
		From video RAM (the frame buffer), the data is converted by a RAM digital-to-analog converter (RAMDAC) into analog signals that are sent to the display presentation mechanism such as a cathode ray tube (CRT).
	searchstorage.techtarget.com /sDefinition/0,,sid5_gci213325,00.html (596 words)

	Video RAM having block selection function during serial write transfer operation - Patent 5381376
		A video RAM having a random access memory, a serial access memory, and a block selector for high speed data processing is disclosed.
		Video random access memories (also known as dual port dynamic RAM's and video random access memories, or VRAM's) arc memory devices having both a port enabling random access to the memory device and a serial port for providing access for transferring data to and from the memory device.
		In applications using special integrated memory devices such as video RAM's, as well as in application using related devices such as field memories and graphics memories, the time for the serial write transfer operation should be minimized as much as possible by optimizing both design and operation of the devices.
	www.freepatentsonline.com /5381376.html (4602 words)

	Video ram method for outputting serial data (US5572477)
		The present invention relates to a video RAM as a dual port memory, and more particularly to the video RAM which is adjustable to a high speed system clock and a serial data output method thereof.
		The video RAM according to the present invention has independent serial data output paths respectively for even address and odd address, thus enabling the serial data to be outputted every period of the serial clock.
		A video RAM having a data register for outputting serial data in response to the input of a serial address which is synchronized with a serial clock, said video RAM comprising:
	www.delphion.com /details?pn%3DUS05572477__ (347 words)

	Motion, Video cards, Ram, and Processor Speed
		RAM has been updated from a stock 2x256 configuration (c'mon Apple) to 2.5 Gb using a 6x256 configuration.
		The results: Maximum playback using this configuration, which quadrupled the VRAM and nearly doubled the system RAM to 4.5 Gbs was 23 fps, and our minimum was 14 on BOTH the initial pass, and the subsequent passes.
		While the general belief is that emitters and filters gain the most from a powerful video card, the overall system configuration also contributes, it appears, to performance.
	www.lafcpug.org /feature_motion_videocrd.html (1535 words)

	Video RAM memory bandwidth (Site not responding. Last check: 2007-10-09)
		One of the main things you need to consider when selecting a video card is the memory bandwidth of the video RAM.
		Sometimes the RAM chips are all on the front of the card and other times half of the RAM chips are on the front and half are on the back.
		The only way to be absolutely sure about the width of a RAM chip is to read the manufacturer's number off the top of the chip and then look it up (usually pretty easy with google).
	www.playtool.com /pages/vramwidth/width.html (1930 words)

	Video ram with external select of active serial access register - Patent 5001672
		Thus, the present invention implements the ability in a video random access memory to specify both the starting and ending points of the data to be scanned out of the serial access memory.
		The nature of video display scan patterns and update rates points to a need for even faster access times and a need to decouple the updating of the frame buffer from the scanning out of the stored values (through video generation circuitry) for display on a video monitor.
		Video RAMs of this type are known in the prior art, for example U.S. Pat.
	www.freepatentsonline.com /5001672.html (3609 words)

	Installing Video RAM (Site not responding. Last check: 2007-10-09)
		Video cards are changing so fast that by the time you want more memory, you guy a new card.
		That said, upgrading your video RAM is relatively easy.
		On most business systems, as little as 1MB of video RAM is enough, although all cards come with more than this now.
	www.pcmech.com /show/memory/90 (451 words)

	[No title]
		Different video cards use different methods to decide how to allocate memory for these functions: some will use whatever memory is "left over" after the necessary space for the frame buffer has been set aside, while others will pre-allocate the calculation memory and then limit the size of the frame buffer accordingly.
		The advantages of this are of course enormous given what the video card does: many times per second a new screen image is calculated and written to the memory, and many times per second this memory is read and sent to the monitor.
		DDR RAM are the fastest memories on the market; introduced on the high-end segment a few years ago, they are nowadays used on almost all 3D video cards, except for low-end ones.
	web.tiscali.it /marcoveglio/mem.html (1820 words)

	Video RAM - VRAM
		Also known as dual-ported memory, VRAM is short for Video RAM.
		VRAM is a special, more expensive type of RAM chip capable of performing read and writes at the same time and being accessed by two devices simultaneously.
		VRAM is a commonly used as video memory increasing the overall speed of the video card.
	www.computerhope.com /jargon/v/vram.htm (64 words)

	Calculating video ram usage - The Virtools Swap-Meet Forums (Site not responding. Last check: 2007-10-09)
		If, by RAM you mean video ram then I would not count on it.
		The texture setup will tell you what the current video ram settings are and how much video ram is being used.
		Your meshes are in video ram as a list of vertices, UV coords for each material channel, prelit color values (if used), etc..
	www.theswapmeet.com /ubb/Forum3/HTML/000077.html (985 words)

	Video RAM (Site not responding. Last check: 2007-10-09)
		This and the next two types of RAM are used on graphics cards to take the load off of your system RAM.
		VRAM is dual ported (Two access ports, One to refresh the display and one to change the stored data for the next display.) This effectively doubles the bandwidth of DRAM and SRAM.
		Around 30 to 40 times a second.) This type of RAM was developed by Micros.
	www.pcwize.com /tech/computer/ram6.shtml (151 words)

	The Definitive Video RAM Caching Guide
		The article is about the caching of the video RAM by the L2 cache, not the caching of the video BIOS.
		If the video BIOS is not used, it is not cached but it will definitely be shadowed, if video BIOS shadowing was enabled.
		The results of the video RAM caching benchmarks should not be affected by the overclocking of the AGP bus because the purpose is to test only one variable factor - the Video RAM Cacheable feature.
	www.adriansrojakpot.com /Speed_Demonz/Video_RAM_Caching/Video_RAM_Caching_Comments_01.htm (1544 words)

	Video RAM (VRAM) and Other Video DRAM Technologies
		Modern video adapters use their own, specialized RAM that is separated from the main system memory.
		In addition to the video image being accessed and changed by the processor on a continual basis (many times a second when you are running a game for instance), the video card also must access the memory contents between 50 and 100 times per second to display the information on the monitor.
		Video cards have therefore spawned the creation of several new, innovative memory technologies, many of them designed to allow the memory to be accessed by the processor and read by the video card's refresh circuitry simultaneously.
	www.pcguide.com /ref/ram/techVRAM-c.html (270 words)

	Free2Code - Forums - 3D Graphics - Video RAM FIY
		Video RAM as "video RAM" means in general all forms of RAM used to store image data for the video display monitor.
		SGRAM is proving to be a significant player in 3-D video technology because of a block-write feature that speeds up screen fills and allows fast memory clearing.
		This type of RAM is not as effective for non-graphics intensive systems.
	www.free2code.net /plugins/forums/view.php?f=38&p=46739 (445 words)

	Video University: Video University Forums: Mac Video: Adding ram breaks premiere?!
		It tells me that their is not enough memory (!) and that I should choose "Build to disk, play from disk" even though this is already selected.
		The last time I swapped out the ram, I put it back in a different slot.
		I think I'd better run the "ram checker" to see if OS X will object to this ram.
	www.videouniversity.com /forums/gforum.cgi?post=110470 (381 words)

	Linux: Using Video RAM as System RAM (Site not responding. Last check: 2007-10-09)
		Byron Stanoszek posted a small patch to the lkml, his efforts at adding 32MB of video card RAM to the system RAM pool on his aging 586.
		A problem with this effort is the significantly slower speed of video RAM.
		For this reason, it has been suggested that he turn the video RAM into a block device which could then be added as a fast swap device.
	kerneltrap.org /node/view/143 (1330 words)

	hardCOREware Forum - video ram (Site not responding. Last check: 2007-10-09)
		What is the advantage (for games that support this feachure) to "fitting textures in video card memory" as opposed to just caching it on your ram.
		It'll still use some system RAM but not as much.
		Unfortunately, the trend is " more memory of ram on vid card, slower it has to be", which actually translates to poorer performance...
	www.hardcoreware.net /forum/printthread.php?t=11973 (70 words)

	Video ram versus chipset - TechIMO Forums
		A buddy of mine and I have a little ongoing debate over which is more important to a video card's performance, the ram or the chipset.
		Even though it upped the playing field in the amount of ram that was available on video cards, the previous generation GeForce4 Ti was an amazing piece of technology - even with smaller amounts of memory.
		I may be worng, but I believe they are refferring to the chipset on the actual video card, not motherboard chipset.
	www.techimo.com /forum/t153372.html (1058 words)

	[No title]
		This video was the very first to be shot inside the camp after the Israeli attacks.
		The video maker and other international activists were able to rush thru the Israeli lines and enter the compound to join PNA President Yasser Arafat and over 150 Palestinian men inside.
		Il video prodotto dal movimento napoletano, in collaborazione con CandidaTV and Indymedia Italia, sulle 4 giornate di marzo 2001 contro l'OCSE.
	www.indymedia.org /projects.php3 (3780 words)

	RAM Guide - Video RAM Technologies
		Today's video cards are high bandwidth cards that need every performance boost to accommodate high resolutions and refresh rates along with fast performance.
		These forms of Video memory are no different than their system RAM counterparts, with the exception of faster access times.
		The exact amount of RAM you need depends on your resolution (width x height to determine the exact number of pixels used) multiplied by your color depth (the total amount of colors supported).
	www.makeitsimple.com /articles/ramguide/ramguidep4.htm (844 words)

	Video RAM (Site not responding. Last check: 2007-10-09)
		VRAM is special-purpose memory used by video adapters.
		So as you can see, having a huge amount of video RAM has no benefit whatsoever.
		Generally a term used in computers to describe RAM dedicated to the purpose of displaying bitmap graphics in...
	www.it-outpost.com /featured/Video_RAM1.shtml (178 words)

	Video Card RAM vs System RAM - ieXbeta Board
		There is a total of 512mb system ram, but since the gfx card is onborad, it shares this ram.
		I'm not sure about the efficiency of shared ram, but more ram to the graphics will allow a game to store more textures, instead of caching and swaping all the time.
		Originally, RAM was what let you load a program into memory, because there was no memory cache on the hard disk.
	board.iexbeta.com /index.php?showtopic=37862 (1362 words)

	The Definitive Video RAM Caching Guide
		That's much lower than the RAM bandwidth of many higher-end cards (4.8GB/s with a 128-bit bus running at 150MHz DDR) which will soon become the norm but 2.4GB/s will be the number we will be using as an example.
		On the other hand, the motherboard RAM's bandwidth is only a pitiful 0.8GB/s (64-bit x 100MHz), which is way slower than the L2 cache (only a miserly 20% of the L2 cache's bandwidth).
		It would be much better to use the limited amount of cache to speed up the slow motherboard RAM instead of the much faster video RAM.
	www.adriansrojakpot.com /Speed_Demonz/Video_RAM_Caching/Video_RAM_Caching_01.htm (440 words)

	RAM-Shock Software - Full-Motion Video Screensavers featuring Classic Cartoons and Vintage Videos. Some of our ...
		Our classic themed video screensavers and vintage video downloads will bring back nostalgic memories of more simple times, when millions of children sat in front of the TV and watched cartoons and comedy shows on Saturday mornings.
		The nature of classic cartoons and vintage videos from the last century still have an enduring (and endearing) quality to them in comparison to those created in more recent years.
		We are so confident that you will be thrilled with them that we are willing to give you a refund, up to seven days after registering them, if you're not.
	www.ramshock.com (288 words)

	Share Ram to Video
		If you have onboard video, then you should be able to change the amount of shared RAM used by the video function as described.
		I thought the apature couldn't exeed the RAM on the Video Card, or it could only be half the VC RAM.
		If a game really does need to access and use system RAM (which as you say is much slower and would be detrimental on performance) then perhaps the card isn't good enough for the game being played.
	www.daniweb.com /techtalkforums/thread13975.html (842 words)

	VGA Video and RAM Coolers including Zalman ZM80A-HP
		Video card coolers, north bridge chipset coolers, and ram coolers to keep those other componenets in your case cooler.
		The Zalman VGA Ram Heatsink ZM-RHS1is designed to cool the memory modules of VGA card passivelymore info...
		Tweak Monster BGA RAM heatsinks are for the smaller chips of the GeForce 4 video cards and ATI's new Radeon 9000 series video cards, to include the 9000 and 9700.
	www.casecooler.com /othercooling.html (554 words)

	How Much Video RAM Do You Really Need
		To calculate how much video memory you need, you must know the color depth and the screen's horizontal and vertical resolution in pixels.
		Because video cards advertise their video memory in megabytes, and 1MB has 8,388,608 bits (8 bits in a byte times 1024 bytes in 1 kilobyte times 1024 kilobytes in 1MB).
		The resulting number is the minimum amount of video memory you need to support that combination of resolution and color depth.
	www.spcug.org /reviews/vlba9811.htm (509 words)

	The educational encyclopedia, computer memory guide, ram, rom, eprom, DRAM and SRAM (Site not responding. Last check: 2007-10-09)
		While all forms of memory work together, RAM is considered the main memory since most data, regardless of its source, is stored in RAM before it is registered in any other storage device
		Motherboard RAM guide motherboard RAM guide, motherboard compatiblity guide to determine max ram per board, max ram per slot and the type of ram that can be used (PC100, PC133, DDR etc)
		RAM: guide to troubleshooting the normal procedure is to power up the PC system, watch for error message on the monitor screen and listen to the PC beep tone.
	users.telenet.be /educypedia/computer/memoryram.htm (649 words)

	SpeedGuide.net Broadband Community - Simulating RAM for Video Card Memory
		I'd like to be able to simulate some of my RAM for video card memory.
		When this feature is enabled, the Video BIOS is copied to the system RAM for quicker access.
		I imagine there has to be some sort of program out there that can simulate some RAM for Video Card memory.
	forums.speedguide.net /showthread.php?t=21985 (456 words)

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