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  #1 (permalink)  
Old 02-02-2007, 07:23 AM
safeer1982@gmail.com
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Default AGP 8x Card in a AGP 4x slot?

What would happen if you located an AGP 8x Card in a AGP 4x slot?

Would this result in a serious loss of performance by the card, if it
was installed into an AGP 4x slot?

Thank you


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  #2 (permalink)  
Old 02-02-2007, 07:29 AM
Rod Speed
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Default Re: AGP 8x Card in a AGP 4x slot?

safeer1982@gmail.com wrote:

> What would happen if you located an AGP 8x Card in a AGP 4x slot?


Usually works fine.

> Would this result in a serious loss of performance
> by the card, if it was installed into an AGP 4x slot?


Nope, the loss wouldnt be dramatic.



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  #3 (permalink)  
Old 02-02-2007, 08:11 AM
Paul
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Default Re: AGP 8x Card in a AGP 4x slot?

Rod Speed wrote:
> safeer1982@gmail.com wrote:
>
>> What would happen if you located an AGP 8x Card in a AGP 4x slot?

>
> Usually works fine.
>
>> Would this result in a serious loss of performance
>> by the card, if it was installed into an AGP 4x slot?

>
> Nope, the loss wouldnt be dramatic.
>
>


I just ran a benchmark. And I'm surprised how little
difference there is. I expected a bit more difference than
this. There was a fresh reboot before each test.

P4 3.2GHz, 9800Pro, 1GB mem, 3DMark2001SE Build330
AGP 8X = 15720
AGP 4X = 15532

HTH,
Paul

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  #4 (permalink)  
Old 02-02-2007, 08:16 AM
safeer1982@gmail.com
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Default Re: AGP 8x Card in a AGP 4x slot?

which card were you using to conduct the test, just out of interest?

Secondary Question -
i have just purchased an ATI X1950 Pro AGP 8x 512MB, how much system
RAM would you reccomend my system has in order to utilise this card
properly?

My System is
P4 2.8
512MB RAM

thanks


On 2 Feb, 09:11, Paul <nos...@needed.com> wrote:
> Rod Speed wrote:
> > safeer1...@gmail.com wrote:

>
> >> What would happen if you located an AGP 8x Card in a AGP 4x slot?

>
> > Usually works fine.

>
> >> Would this result in a serious loss of performance
> >> by the card, if it was installed into an AGP 4x slot?

>
> > Nope, the loss wouldnt be dramatic.

>
> I just ran a benchmark. And I'm surprised how little
> difference there is. I expected a bit more difference than
> this. There was a fresh reboot before each test.
>
> P4 3.2GHz, 9800Pro, 1GB mem, 3DMark2001SE Build330
> AGP 8X = 15720
> AGP 4X = 15532
>
> HTH,
> Paul




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  #5 (permalink)  
Old 02-02-2007, 09:46 AM
Paul
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Default Re: AGP 8x Card in a AGP 4x slot?

safeer1982@gmail.com wrote:
> which card were you using to conduct the test, just out of interest?
>
> Secondary Question -
> i have just purchased an ATI X1950 Pro AGP 8x 512MB, how much system
> RAM would you reccomend my system has in order to utilise this card
> properly?
>
> My System is
> P4 2.8
> 512MB RAM
>
> thanks


ATI 9800pro was the video card.

And the amount of system RAM, depends on the game. For BF2, 1GB
is enough. Task Manager shows about 600MB or so used. For a game
like Gothic3, the answer might be 2GB of RAM. For other games,
less will do.

You can use Google to find how much memory people use for the
different games.

Paul

>
>
> On 2 Feb, 09:11, Paul <nos...@needed.com> wrote:
>> Rod Speed wrote:
>>> safeer1...@gmail.com wrote:
>>>> What would happen if you located an AGP 8x Card in a AGP 4x slot?
>>> Usually works fine.
>>>> Would this result in a serious loss of performance
>>>> by the card, if it was installed into an AGP 4x slot?
>>> Nope, the loss wouldnt be dramatic.

>> I just ran a benchmark. And I'm surprised how little
>> difference there is. I expected a bit more difference than
>> this. There was a fresh reboot before each test.
>>
>> P4 3.2GHz, 9800Pro, 1GB mem, 3DMark2001SE Build330
>> AGP 8X = 15720
>> AGP 4X = 15532
>>
>> HTH,
>> Paul

>
>


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  #6 (permalink)  
Old 02-02-2007, 10:51 PM
DaveW
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Default Re: AGP 8x Card in a AGP 4x slot?

An 8x video card will run in an AGP 4x slot, but the card will only run at
half its rated bandwidth. So, yes, a performance hit.

--
DaveW

----------------
<safeer1982@gmail.com> wrote in message
news:1170404612.004065.43860@m58g2000cwm.googlegro ups.com...
> What would happen if you located an AGP 8x Card in a AGP 4x slot?
>
> Would this result in a serious loss of performance by the card, if it
> was installed into an AGP 4x slot?
>
> Thank you
>




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  #7 (permalink)  
Old 02-02-2007, 11:01 PM
Rod Speed
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Default Re: AGP 8x Card in a AGP 4x slot?

DaveW <somewhere@zero.org> wrote:

> An 8x video card will run in an AGP 4x slot, but the card will only run at half its rated
> bandwidth.


Nothing like half in practice.

> So, yes, a performance hit.


Sometimes its so little you cant even pick it in a double blind trial.


> <safeer1982@gmail.com> wrote


>> What would happen if you located an AGP 8x Card in a AGP 4x slot?


>> Would this result in a serious loss of performance by the card, if it was installed into an AGP
>> 4x slot?




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  #8 (permalink)  
Old 02-03-2007, 11:41 AM
kony
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Default Re: AGP 8x Card in a AGP 4x slot?

On Fri, 2 Feb 2007 15:51:01 -0800, "DaveW"
<somewhere@zero.org> wrote:

>An 8x video card will run in an AGP 4x slot, but the card will only run at
>half its rated bandwidth. So, yes, a performance hit.



No, in almost all situations the difference is minor, and in
particular it is more common that a system old enough to
only have AGP 4X support would have other factors impacting
video performance (for gaming, since AGP 4X is far more than
sufficient for other uses) like insufficient system memory,
system memory performance, or CPU performance.


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  #9 (permalink)  
Old 02-03-2007, 03:02 PM
Mike Walsh
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Default Re: AGP 8x Card in a AGP 4x slot?


The graphics engine on the video card would run at the same speed whether it is in an AGP4 slot or an AGP8 slot. Only the I/O between the card and the AGP port would be different.

DaveW wrote:
>
> An 8x video card will run in an AGP 4x slot, but the card will only run at
> half its rated bandwidth. So, yes, a performance hit.


--
Mike Walsh
West Palm Beach, Florida, U.S.A.

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