Grapics card I have a compaq presario 4000T - 4LCXE1 computer it has an open slot for a 4X AGP card. Which card is compatible with my unit?

Welcome to FixYa!

Regarding this particular model, this has AGP (Accelerated Graphics Port) 4X expansion slot for graphics cards, I don't think it is still available in the market, you may try to purchase a good second hand graphics card for this and this is fully compatible with windows XP.
Just ask for AGP 4X compatible cards, available graphics memory will be 64 MB, 128 MB and 256 MB. Hope this helps.

The motherboard used has an AGP 8X/4X expansion slot for a video card. Any card for this type of slot will work, and your choice will probably be based on what applications you want to run, and how much you want to spend. Since this computer is an AMD Athlon system, some people believe you should use an ATI card. AMD owns ATI, and there is a belief that an ATI card will perform better. I've tried both (my current video card is an nVidia model, in an Athlon dual-core board), and at least for me it makes no difference.

That would be Compaq Presario SR1313CL desktop computer.

(He says quietly so as to not offend.
Compaq = Computer manufacturer name.
Presario = Model Name
SR1313CL = Model Number.
S/N is next to the Serial Number. Do NOT give out the serial number on an open forum. Only to HP/Compaq representatives, or an authorized HP representative)

Let's take a look at the motherboard, and let me show you where the AGP style of graphics card plugs in.
(Accelerated Graphics Port)

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00069442&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=447943

Please scroll down the page to the Illustration, and photo of the motherboard.

In the illustration look under the chipset labeled - VIA KM400A
The long rectangle with - Accelerated Graphics Port is where the AGP graphics card plugs into.

Now match this up to the motherboard photo.

You'll see the whitish rectangular shape with a lot of holes in it towards the top of the motherboard.
(Has a square hole in it)
This is the Processor socket.

Down below the Processor socket is a square silvery looking object with ribs going across it.
The silvery looking square object is a Heatsink. It is sitting on the Northbridge chip.

[The motherboard chipset for this motherboard, consists of a Northbridge chip, and a Southbridge chip.
The Northbridge and Southbridge chip are made by VIA.

The Northbridge chip is a VIA KM400A. The Southbridge chip is a VIA VT8237

Chip and Chipset are alternate terms used for I.C.
Integrated Circuit ]

Below the Northbridge chip's Heatsink is a long Brown slot.
This is the AGP expansion slot.

'Mr.Windy' here, but if I may.

1) Motherboard Specifications:
Scroll back up the page until you come to the heading on the left side - Expansion Slots
Look to the right.

Three PCI slots
One AGP 8x/4x (1.5V)

One AGP 8x/4x means the type of AGP expansion slot you have, will accept either an AGP 4X style of graphics card, or an AGP 8X style of graphics card.

1.5V stands for 1.5 Volt

This is how you know the AGP 8X graphics card will,
1) Fit in the AGP expansion slot on the motherboard
2) Be supported by the BIOS program of the BIOS chipset, on the motherboard.

Did this computer already have an AGP graphics card in it, and are you replacing it?

Replacing because the old AGP graphics card,
A) Is No good?
B) You have a better AGP graphics card?
C) The computer was using Integrated Graphics, and you want to install an AGP graphics card for better graphics performance?

There is criteria to follow before you physically install the AGP graphics card, is why I ask.
Post in a Comment.
(Believe upper right of your page is Comment)

yes you can install the card. you have a AGP 4X slot in your pc the slot looks like this

Hi,
This particular model of the system is basic home use system not built for games.
You can put in either a PCI graphics card or an AGP 4x graphics card that should not take more than 1.5v of power.
The max you can put is 128 MB , you can try the 256 MB, but i would suggest against it .

Thanks for using fIxya
proton

HI Lau_kua08,

First off, your motherboard is a AGP 4x slot, and the Card is a AGP 8X card. However, NVIDIA based graphic cards which support AGP 8x mode (Accelerated Graphics Port) follow the AGP 3.0 specification. The AGP 3.0 specification retains backwards compatibility with older AGP 4x technology. All NVIDIA Geforce and Quadro GPU's which support AGP 8x mode are downwards compatible with AGP 4x motherboards. When a graphics card which operates at AGP 8x mode is installed on a motherboard which only supports up to AGP 4x mode, the card will automatically switch to AGP 4x operation.

So, yes it will work.

Good Luck,

Mark

This board only has a 4X AGP slot so any AGP video card of 4X will do recommend 256MB or more if you can get it

the 4x card WILL work in an 8x slot but it will only run at 4x speed because of the card limitation. also, the 8x card WILL work in a 4x slot but it will only run at 4x speed because of the slot limitation. i've done it. peace

All AGP based cards are backwards compatible, so an 8x card should operate at 4x 2x and 1x

however what is important is the voltage of your slot, you can tell by looking at the slot itself,  the AGP slot may have a partition either 1/3 or 2/3rds down the slot, or may have no partition at all,

this slot partition is to prevent you from inserting a card of the wrong voltage.

If there is no partition in the AGP slot then the slot has a switchable voltage, and will automatically switch to the appropriate voltage, (on request from the graphics card AUTOMATIC)

 

so all you need to check is that the graphics card you buy has slots on the AGP interface that accomodate those on your board

 

according to the manual

http://www.ecs.com.tw/ECSWebSite/Downloads/DownloadFile.aspx?catid=1&driverid=413&areaid=2&LanID=0

This board has a 4x AGP slot

I don't think there's a 8x AGP card made that would not work at 4x, and any 4x capable AGP slot should handle an 8x card. AGP 1.0 (x2) signals at 3.3V AGP 2.0 (x4) signals at 1.5V AGP 3.0 (x8) signals at 0.8V