Agp appature size

what is the best agp appature size for my system, as some people say that setting it to half your ram size is the best but others say that setting it the same as my gpu mem size?

the difference is miniscule like me_amd said. But set it to your GPU ram size.

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AGP aperature size in BIOS

In the BIOS there is an AGP aperatire size setting and I was wondering what this setting should be set to. There are options for 64mb, 128mb, and 256 mb. I have a PNY GeForce FX 5600 256MBS DDR Ram. And does this setting even affect performance?

This BIOS feature allows you to select the size of the AGP aperture. The aperture is a portion of the PCI memory address range that is to be dedicated for use as AGP memory address space. Host cycles that hit the aperture range are forwarded to the AGP bus without need for translation. The aperture size also determines the maximum amount of system RAM that can be allocated to the AGP graphics card for texture storage.
The AGP aperture size should be calculated using this formula : maximum usable AGP memory size x 2 plus 12MB. The actual usable AGP memory space is less than half the AGP aperture size set in the BIOS. This is because the AGP controller needs a write combined memory area equal in size to the actual AGP memory area (uncached) plus an additional 12MB for virtual addressing. Therefore, it isn't simply a matter of determining how much AGP memory space you need. You also need to calculate the final aperture size by doubling the amount of AGP memory space desired and adding 12MB to the total.
Note that the AGP aperture is merely address space, not physical memory in use. The physical memory is allocated and released as needed only when Direct3D makes a "create non-local surface" call. Windows 95 (with VGARTD.VXD) and later versions of Microsoft Windows use a waterfall method of memory allocation. Surfaces are first created in the graphics card's local memory. When that memory is full, surface creation spills over into AGP memory and then system memory. So, memory usage is automatically optimized for each application. AGP and system memory are not used unless absolutely necessary.
It is quite common to hear many people recommending that the AGP aperture size should be exactly half the amount of system RAM. However, this is wrong for the same reason why swapfile size shouldn't always be 1/4 of system RAM. Like the swapfile, the requirement for AGP memory space shrinks as the graphics card's local memory increases in size. This is because the graphics card will have more local memory to dedicate to texture storage. This reduces the need for AGP memory. So, if you upgrade to a graphics card with more memory, you shouldn't be "deceived" into thinking that it will therefore require even more AGP memory! On the contrary, a smaller AGP memory space will be required.
If your graphics card has very little graphics memory (4MB - 16MB), you may need to create a large AGP aperture, up to half the size of the system RAM. The graphics card's local memory and the AGP aperture size combined should be roughly around 64MB. For cards with more local memory, you needn't create quite so big an aperture. Note that the size of the aperture does not correspond to performance so increasing it to gargantuan proportions will not improve performance.
Still, it is recommended that you keep the AGP aperture around 64MB to 128MB in size. Now, why is such a large aperture size recommended despite the fact that most graphics cards now come with large amounts of local memory? Shouldn't we just set it to the absolute minimum to save system RAM?
Well, in the first place, many graphics cards require an AGP aperture of at least 16MB in size to work properly. This is probably because the virtual addressing space is already 12MB in size! In addition, many software have AGP aperture size requirements that are mostly unspecified. Some games actually use so much textures that a large AGP aperture is needed even with graphics cards with large memory buffers.
And if you remember the formula above, the AGP aperture must be more than twice the size of the desired AGP memory space. So, if you want 15MB of AGP memory for texture storage purposes, then the AGP aperture has to be at least 42MB in size. Therefore, it makes sense to set a large AGP aperture size in order to cater for all eventualities.
Please note that reducing the AGP aperture size won't save you any RAM. Again, what setting the AGP aperture size does is limit the amount of system memory the AGP bus can appropriate when it needs to. It is not used unless absolutely necessary. So, setting a 64MB AGP aperture doesn't mean that 64MB of your system memory will be appropriated. It will only limit the maximum amount of system memory that can be used by the AGP bus to 64MB (with a usable AGP memory space of only 26MB).
Now, while increasing the AGP aperture size beyond 128MB won't take up system RAM, it would still be best to keep the aperture size in the 64MB-128MB range so that the GART (Graphics Address Relocation Table) won't become too big. As the amount of local memory on graphics cards increases and texture compression becomes commonplace, there's less of a need for the AGP aperture size to grow beyond 64MB. Therefore, it is recommended that you set the AGP Aperture Size to 64MB or at most, 128MB

Agp apar. size in the bios

my agp apar. size is set to 64
i am using radeon 9500 pro on a neo2-s and p4 2.6C
should i raise it ? will it give me some boost ?

There are varied opinions on this. Some say set it to half of your video memory size and some say set it to the same amount. If I remember correctly, the AnandTech folks did a study and did not see anything significant after 64K. I think there was a significant performance hit at 16K though. Also if you do a search, you'll come across posts on this subject in the MSI forum as well.

How to use BISO ' "AGP Aperture size"

How to use BISO ' "AGP Aperture size"? Which value can i set?

Quote
Originally posted by ThereforeTherefore
This article is dated, but it is the only benchmark I've ever seen for AGP aperature: http://www.tweak3d.net/articles/aperture-size/
Must be dated....its a Blank page?....tried the articles....link...blank also?

What is the best AGP aperture size ???

my VGA : radeon 8500 128 le
my ram: Spectec 512 (266) ddr one piece
what is the best agp aperture size u recomend??
thanks

may look here also:
http://www.neowin.net/forum/lofiversion/index.php/t173027.html

Set the AGP Aperture Size (BIOS)

in my bios of my k7n2 mainboard
should i set the AGP Aperture Size to 128 if i have a video card of 128 MB??
bocouse i have a radeon 9800 pro 128MB and the AGP Aperture Size is set to 64MB

Quote
Originally posted by axeluktoo
Hi,
Speedcat: System RAM! (there's not many 512mb VGA cards around )
Axel
iv got 512 mb ram on my mobo
and 124 mb on my video card
what do you recomand?

AGP Aperture Size

Hi Peoples. Somebody educate me and tell me where I should set this in the BIOS for a card with 128 Mb RAM for maximum performance.
Would I be correct in assuming that this should be set to a value that is equal or less than the RAM on the card ?
Thanks

Quote
Originally posted by AnonymousOne
Quote
Originally posted by NovJoe
It is mainly for Graphics card support only. So that means if you are running apps that are eating up more memory than the VGA card can support, the need amount of RAMs capacity will be borrowed from the system's RAM allocated in AGP Aperture Size.
Thanks for the response, but I think you somewhat misunderstood my question. I understand the purpose of AGP aperture size as you've mentioned. I'll rephrase the question: When the AGP aperture size is set, is this amount of memory inaccessible by other applications if the video card isn't using it? In other words, I have 1024Mb of memory and my aperture size is set to 256Mb. Does that leave only 768Mb of memory for the system to use or can the rest of the 256Mb(aperture size) be used as well for other applications if the video card doesn't use them? Thank you again.
NO, its a waterfall effect. As memory "spills" (tops out) over the video memory it starts to take over some RAM... the ram is used as video memory as it is needed, it is not taken up from the start. So if u you decided to set your aperature at 128, the system RAM would stop filling up at 128mb...
So if your video isnt using it, its not taken up!

AGP aperture size cause my computer to crash?!

Ok. When my AGP aperture size is set to anything past its lowest value (4mb), my computer crashes. I haven't noticed any huge performance differences when running at 4mb aperture size, as opposed to 64mb or 128mb, but i'm curious as to what anyone here might think the cause of this is? Would it most likely be my oporating system, my motherboard, my video card, my RAM, etc...?
System Specs:
Windows 98SE
MSI KT4V Motherboard
Radeon 9700 Pro (Made by ATI.)
512mb DDR RAM (Not sure what brand.)
Two 60gb Maxtor Hard-drives
400+ Watt Power Supply

I've been banging my head for two days now trying to figure out why my KT4V would not boot after setting initial bios.
I changed my AGP aperture size to 4mb and now I am up and running.
Windows XP sp1a
MSI KT4V
AMD XP 2200+
PNY G-Force FX * 5200 AGP 128mb DDR
1G PC2100 DDR 266
1 60G Maxtor DH
Entec true 3802 380W PSU

AGP Aparture Size changing

Quote
I'm running an ATI Radeon 9700 Pro, and I've noticed that I would get reboots in almost every 3d applications. I would even get bluescreens 0x8E, etc. saying IRQ screwup.
I have found that lowering the AGP Apature Size in your bios to its lowest setting helps a ton for stability. The AGP Apature Size basicly allocates system ram as video ram... System ram isn't as reliable as video ram. On my 128MB video card which has ram WAY faster than my DDR333, using the video cards ram not only speeds up your framerate, but also stabilizes your system. For not-so-great video cards you might notice a slight slowdown with this -- better slow than randomly rebooting.
I found this article at http://www.tweakxp.com/display.aspx?id=1792 and i was hoping this would solve my BSODS with 0x8E errors and the random shutdowns, how do i access this option using MSI Liveupdate 2's BIOS and Loading protocols?

Hi,
I suggest you read this:
http://www.rojakpot.com/default.aspx?location=9
Click on "AGP Aperture Size"
Axel

AGP Apperture Size in BIOS

I have a K7T266 Pro2-RU, Bios 3.7, GeForce4 Ti4600 Video Card.
What is the right AGP apperture sixe to configure in the BIOS (64 megs, 128 megs)?
Thanks.

Here you go a good article to read including bench tests.
http://www.tweak3d.net/articles/aperture-size/index.shtml

AGP Aperture size??? and CPU temp???

1. i have changed the Aperture size to 128Mb (instead of 64) and every time i enter a game, after at least 20 minutes (sometimes less) it kicks me out back to windows.
when i played generals it told me that i might have had a hardware malfunction... which is weird cause i have a new computer.
when i returned the aperture size back to 64, it worked fine, only slower... any ideas...?
2. my CPU reached some interesting tempretures, and i have a lot of airflow... the question is this, when i'm not running any porgram (IDLE time) my cpu sits at around 43 degrees, when i do run stuff (like games, or graphic progs) my CPU rises up to 58, and i even reached 62 once...
is this logical? shouldn't P4 CPU's be cooler then AMD's? how can i force a change on the CPU cooler to work faster (when i change it through Core center the max i get is 4500rpm), can i make it higher?
thanx in advance, EagleIL.

OK,
I have just finished assembling my 865PE monster. I must say, MSI is consistent, the only issue I have seen with them is 2 things:
1. They will never learn to measure CPU temperature correctly.
2. Bios updates never seem to improve things much, or can be a disaster.
Other than that, I checked my temps, and with a side fan and a rear fan and a blower (pci slot turbo blower) out, I had 26-28 deg C at startup (cold iron). My CPU temp was 48 deg C which is physically impossible, and the reported case temp was 38 deg C in the bios but 28 deg c on my independent temp system.
I rearranged everything with side out and reversed one of the rears to blow in, and I have a steady 22-23 deg c after 6 hours. The CPU still reads 48 deg c and climbes to 50-52 under load. The reported case temp is still 38 deg c and climbs 1-2 deg. So I do not believe the temp readings.
I also do not believe all the hogwash about the CPU coolers. The stock Intel cooler has always worked fine for me, and I remember a report that said it was one of the best, in a test against a bunch of them a year or so back. There is good reason for this (I work for Intel, so I know it is not made up): They package the cooler with thier retail chips and also provide them to OEMs. They have to take all the measures possible to ensure the CPU survives the 3 year warranty and the only thing (99%) that will kill a CPU is heat. The heat removal rate of the stock heat sink is sufficient to overcome even the extra heat from OC'ing for the most part, as they test it for that. I believe the rates are posted on the website.
I would say the AGP issue is possibly related to heat effecting the memory on your agp card, or a software issue with the AGP drivers themselves. I would reccomen you revert to another card and try the same scenario if you can. There may be issues using the 128 setting itself.
Good luck. I thought this board would be a nightmare, but it has performed flawlessly with XP Pro, 2.6C, 512 meg ram (CL3!!!)(Elixer), and a Radeon 9000 Pro. I loaded Office XP Pro/Frontpage/Adobe and ran all three with no issues at the same time.
Sometimes its like ::

6600GT agp cooler size?

Considering buyuing the, MSI NX6600GT-VTD128 , in exchange for my old gfx card. My problem is that i only have limited physical space inside my computer ( a shuttle PC ). I only have roughly 2,2 cm free space from the base of the gfx card print sheet to the top of the gfx cooler. Could anyone who own this card measure the height of the cooler/fan and post it ? Doesnt matter if you post it in inch or cm.
Thx in advance.

Quote from: frails on 12-February-05, 15:45:35
This is the only cooler I've found that will suffiently cool the thing.
http://www.zalmanusa.com/product/cooler/VF700_6600GT_eng.html
If he cant use the stock heatsink because its too big, that one is never gonna fit.

BIOS SETTING, need help! MAXIMUM PAYLOAD SIZE? NEO4 PLAT SLI

Hi everyone, this is my first post here, and hope someone will help me out. I've searched the internet, posted on other websites and no one can help me with this question. What does MAXIMUM PAYLOAD SIZE do? What is the correct setting for this? Curruntly I have it at 4096, but what should it be at? Thanks everyone.

Thats a good one (question)... as far as I know it could be similar to the old AGP Aperture Size, but the amount of data doesn't correspond; megabytes vs. kilobytes.
It could be the logical data unit which is carried thru the PCI-E bus in order to feed the PCI-E devices, this is sounds better yet again would be something similar to the AGP Aperture Size: not amount of data being mapped at physical memory, but the size of the data units being transfered.
Hope this helps... try the values to either side and test with a 3d Benchmark, if you see a diference then come back and tell us.
Good Luck.

Motherboard BIOS won't recognize 512MB memory for AGP?

Howdy, I just rebuilt my computer while upgrading a few parts and I have a question. I have a MSI 865PE Neo2 Platinum motherboard and just removed my ATI Radeon 9800XT w/ 256MB of memory and installed a ATI Radeon X1650PRO with 512MB of memory. When I set it up in the BIOS, it will only allow me to go as high as 256MB for the AGP. Will this cause an issue? Will it allow the full 512MB to be used, or will it limit the task to 256MB for the video card?
Is there possibly an update (flash the BIOS) that could fix this?
Thanks,

Quote
Will this cause an issue?
AGP aperture size is the amount of physical RAM allocated for use if your Vid Card RAM is filling up. You aren't setting the amount of RAM on your Vid card. So, no this will not cause an issue having the AGP aperture RAM at 256MB. I would recommend setting it for 64 or 128 MB.
Quote
Will it allow the full 512MB to be used, or will it limit the task to 256MB for the video card?
You will have the full 512MB of your video RAM available. Read above.
Quote
Is there possibly an update (flash the BIOS) that could fix this?
There's no need. There is nothing wrong.

Enabling 8x AGP on 655-LS

I just purchased a geforce ti4200 w/128mb of ram and 8x agp. The problem is that I can not get AGP 8x enabled, the agp utility that came with my 655-LS mobo says that my mainboard and video card capabilities are only 4x. Both my bios and SiS drivers are updated. The only conflict I can see is something to do with powerstrip, I did have a geforce 3 installed previously, is it possible that powerstrip could be forcing my agp rate to run at only 4x? Or is there a way in the bios to change the AGP rate, the only setting that I could find in the bios regarding AGP was the aperture, and that is set at 64. Thx
Chris

Update you SIS AGP GART Accelerator to the lastest version and do a clean un-installation of the old VGA drivers and freshly re-install the new 44.23 drivers from nvidia for your Ti-4200 8x card.
For AGP Aperture size, you can access BIOS> Advanced Chipset Feature> AGP Aperture Size> Set to the value you wish to. Preferably to half the size of system memory.

Agp appature size

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