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**Iphone** · 13-Apr-2007, 12:37 AM

I think you're right about Onboard VGA should be set to minimum MB since its not used anymore.

AGP Fast write should be enabled, found this at Beginners Guides: 99 Performance Tips for WindowsXP - PCSTATS.com

"The AGP fast write BIOS setting allows the processor to communicate directly with the graphics processor, ignoring the need to send data through the system's memory. This should be enabled to provide a performance boost. You should ensure that your video card supports fast writes before setting this option, however.

Almost all recent video cards do support AGP fast write. This setting is generally found in the 'advanced chipset features' section of the BIOS."

About AGP aperture, i found this explanation at LostCircuits, Tech Advice Guide

"AGP Aperture size

The amount of main memory that is allocated for direct memory access (DMA) of the advanced graphics port or DiME (direct memory execution). The hypothetical advantage of the AGP design is that the graphics engine can use the main memory as part of a unified memory architecture (UMA). In this case, the graphics adapter can access textures directly from the main memory (DMA) and, more importantly, process the data directly from and to the main memory, bypassing the on-board graphics memory. This feature requires a certain amount of system memory to be allocated for graphics operations. Too little will result in poor graphics performance, too much will fill up the system memory and take up space required for other operations.

With the increase of on-board graphics memory (currently up to 128 MB on the video card itself) this option has lost its relevance. Were the original recommendations to set the AGP aperture to about ½ of the total system memory, a good approximation now would be:

Total system memory / (video memory [MB] /2)

* In other words, if you are running 128 MB system memory and have a 4 MB video card, the optimal AGP aperture would be:
128 MB / (4/2) = 64 MB
* For a 8 MB video card, the equation would be:
128 MB / (8/2) = 32 MB
* and for a 64 MB video card:
128 MB (64/2) = 4 MB

Please note that this is only an approximation to explain the principle. In real life situation, the AGP aperture should be kept at a minimum of 16 MB. Most modern games will require a minimum of 64 MB texture space in the system memory and with upcoming games like Doom3 and UT2003, there will be even greater demand on system memory reserved as texture buffer (AGP aperture)"

13-Apr-2007, 12:37 AM	#2 (permalink)
Iphone Fixed Error! Posts: 4,202 Join Date: Mar 2007 Rep Power: 6 IM:	Re: Graphics Card\BIOS settings I think you're right about Onboard VGA should be set to minimum MB since its not used anymore. AGP Fast write should be enabled, found this at Beginners Guides: 99 Performance Tips for WindowsXP - PCSTATS.com "The AGP fast write BIOS setting allows the processor to communicate directly with the graphics processor, ignoring the need to send data through the system's memory. This should be enabled to provide a performance boost. You should ensure that your video card supports fast writes before setting this option, however. Almost all recent video cards do support AGP fast write. This setting is generally found in the 'advanced chipset features' section of the BIOS." About AGP aperture, i found this explanation at LostCircuits, Tech Advice Guide "AGP Aperture size The amount of main memory that is allocated for direct memory access (DMA) of the advanced graphics port or DiME (direct memory execution). The hypothetical advantage of the AGP design is that the graphics engine can use the main memory as part of a unified memory architecture (UMA). In this case, the graphics adapter can access textures directly from the main memory (DMA) and, more importantly, process the data directly from and to the main memory, bypassing the on-board graphics memory. This feature requires a certain amount of system memory to be allocated for graphics operations. Too little will result in poor graphics performance, too much will fill up the system memory and take up space required for other operations. With the increase of on-board graphics memory (currently up to 128 MB on the video card itself) this option has lost its relevance. Were the original recommendations to set the AGP aperture to about ½ of the total system memory, a good approximation now would be: Total system memory / (video memory [MB] /2) * In other words, if you are running 128 MB system memory and have a 4 MB video card, the optimal AGP aperture would be: 128 MB / (4/2) = 64 MB * For a 8 MB video card, the equation would be: 128 MB / (8/2) = 32 MB * and for a 64 MB video card: 128 MB (64/2) = 4 MB Please note that this is only an approximation to explain the principle. In real life situation, the AGP aperture should be kept at a minimum of 16 MB. Most modern games will require a minimum of 64 MB texture space in the system memory and with upcoming games like Doom3 and UT2003, there will be even greater demand on system memory reserved as texture buffer (AGP aperture)"