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Can I Use A 8X AGP Video Card In A 4X AGP Slot?


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#1 k2apacherecon

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Posted 17 February 2009 - 01:07 PM

I have a Pentium 4, 3.06GHz/533MHz/512k, 2GB RAM, 430w PSU with a ASUS N6600 video card and I'm interested in upgrading the video card for game play. I know I have an older computer, but it's what I have and I'm not looking at getting a newer computer for another year. So, I have some questions about the compatibility of certain types of AGP video cards I am interested in.

First, my AGP setup is as follows:

AGP Version 2.00
Supported AGP Speeds 1X, 2X, 4X
Current AGP Speed 4X

There's other stats as well, but I'm not sure how important they are:
AGP Status Enabled
AGP Aperture Size 64MB
Fast-Write Supported, Enabled
Side Band Addressing Supported, Enabled

As I look at video cards on newegg.com, I see that for AGP based cards my choices are 4X/8X and 8X. I'm sure the 4X/8X are the cards I can use safely, but is it possible to use a 8X AGP card? I'm really interested in something along the lines of a Radeon HD 2600XT or X1950 Pro, or a GeForce 7800GS. As I look at buying these cards used (I've been checking out my local classifieds and craigslist), I notice that the listed specs indicate 8X AGP, not the 4X/8X AGP. I'm under the impression that using a 8X AGP card may be ok with my setup, the only drawback being the card will not deliver the performance it could because it is installed in a 4X AGP slot. Other than that, it should be compatible right?

I've also heard about something called "backwards compatibility" with video cards and wonder if that means a 8X AGP card WILL work in a 4X AGP slot, or does that mean a 4X AGP card will work in a 8X AGP slot, but not vice versa?

Your advice is greatly appreciated.

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#2 fairjoeblue

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Posted 17 February 2009 - 02:28 PM

Read here,

http://www.neoseeker.com/Hardware/faqs/kb/10,63.html

Then here,

http://www.directron.com/15agpguide.html

You might want to stick with the 8X/4X cards.
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#3 k2apacherecon

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Posted 17 February 2009 - 03:38 PM

Read here,

http://www.neoseeker.com/Hardware/faqs/kb/10,63.html

Then here,

http://www.directron.com/15agpguide.html

You might want to stick with the 8X/4X cards.


Excellent information. Thank you very much!




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