Archived from groups: alt.sys.pc-clone.dell (
More info?)
For example, the Dimension 2400 and 3000.
"John Fryatt" <jrf1@ntlworld.com> wrote in message
news:yZ_sd.179$2M4.82@newsfe4-gui.ntli.net...
> Ah yes, I see what you mean. I remeber those cheapo video cards that
> worked
> with system memory. Do they still exist? Do motherboards with integrated
> video work that way?
>
> Re. AGP aperture, that web site I mentioned before seems to be saying that
> the AGP aperture itself is mapped into virtual memory so that the AGP card
> can 'see' it as one block. Each 4kB sub-block is then mapped onto real
> physical memory by the northbridge chip. The actual memory that graphical
> data is stored in is actually part of system memory, although the AGP
> itself
> doesn't see it there.
>
>
> "Tom Scales" <tomtoo@softhome.net> wrote in message
> news:Y-OdnQwkTMjqDi7cRVn-2Q@comcast.com...
>> Different definition of Shared.
>>
>> Shared memory, to me, means when the video card doesn't have ANY memory
> and
>> uses real PHYSICAL memory.
>>
>> The AGP aperture is mapped into the VIRTUAL memory space, which is
>> different. The aperture is the size of the mapped area.
>>
>> Tom
>> "John Fryatt" <jrf1@ntlworld.com> wrote in message
>> news:uiMsd.298$_n5.190@newsfe2-win.ntli.net...
>> >I think it does refer to shared memory. However, that memory is not
> always
>> > actually taken. It would depend on what you are doing, and whether the
>> > on-board memory of the video card was enough for the task in hand. The
> AGP
>> > spec allows for the video card to grab main system memory if needed,
>> > and
>> > the
>> > AGP aperture says how much it can grab.
>> >
>> > Here's a couple of sites that explain it.
>> >
http://www.ocfaq.com/article.php/overclocking/vidcard/43
>> >
>
http://www.pcplus.co.uk/tips/default.asp?pagetypeid=2&articleid=4556&subsectionid=383&subsubsectionid=91
>> >
>> > John
>> >
>> > "Tom Scales" <tomtoo@softhome.net> wrote in message
>> > news:JsGdnfDoU-Gy6C7cRVn-ow@comcast.com...
>> >> No, the aperture is not the same as Shared memory. I can't explain it,
>> >> but
>> >> it is the 'window' in memory that addresses the video card.
>> >>
>> >> Tom
>> >> "NuTCrAcKeR" <nutcracker@internationalhacker.org> wrote in message
>> >> news:QfedneHO0ejJ_S7cRVn-tQ@speakeasy.net...
>> >> >I believe that is shared system memory on that machine, It depends on
>> >> >the
>> >> > video card you have. It wont really improve "speed" all that much,
> esp
>> > if
>> >> > you dont play games that will max the onboard memory available to
>> >> > the
>> >> > video
>> >> > chip. When specifying shared memory, it reserves that chunk of
>> >> > system
>> >> > memory
>> >> > and effectively reduces the amount of memory available to the OS.
>> >> > So,
>> >> > beware
>> >> > ...
>> >> >
>> >> > - NuTs
>> >> >
>> >> > "Q" <Q@anon.com> wrote in message
>> >> > news:w_Hsd.28873$Rf1.20710@newssvr19.news.prodigy.com...
>> >> >>
>> >> >> "Q" <Q@anon.com> wrote in message
>> >> >> news:1RHsd.28871$Rf1.21788@newssvr19.news.prodigy.com...
>> >> >> > I have a Dell 4550, 384MB of RAM.
>> >> >> > The default setting for AGP aperture size was only 32 in CMOS. I
>> > don't
>> >> >> know
>> >> >> > what the optimum is, so I bumped it up to 64. There is no
>> >> >> > apparent
>> >> > change.
>> >> >> > What is best? The options are 32, 64, 128, 256.
>> >> >> > I really don't know what all this means, except that it should
>> >> >> > impact
>> >> >> video
>> >> >> > speed, right?
>> >> >> > Thanks.
>> >> >> >
>> >> >> >
>> >> >> PS: I ask all this because I have just upgraded to a 19" LCD
> monitor.
>> >> >> I
>> >> > love
>> >> >> it.
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >>
>> >>
>> >
>> >
>>
>>
>
>
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