Upgrading my Graphics Card

Hey guys, i'm looking to upgrade my graphics card so i can play Modern Warfare 2. I've never had to play around with this before so i thought i'd seek some help.

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My System

Processor

3.20 gigahertz Intel Pentium 4
16 kilobyte primary memory cache
1024 kilobyte secondary memory cache
Hyper-threaded (2 total)

System Model

Dell Inc. Dimension 5000

Main Circuit Board

Board: Dell Inc. 0W5363
Serial Number: ..CN1374053O00WH.
Bus Clock: 800 megahertz
BIOS: Dell Inc. A07 11/08/2005

Memory

1536 Megabytes Usable Installed Memory

Slot 'DIMM_1' has 1024 MB
Slot 'DIMM_3' is Empty
Slot 'DIMM_2' has 256 MB
Slot 'DIMM_4' has 256 MB

Display

ATI Radeon X300/X550/X1050 Series [Display adapter]
ATI Radeon X300/X550/X1050 Series Secondary [Display adapter]
LG W2243 [Monitor] (21.7"vis, February 2009)

Controllers

Intel(R) 82801FB Ultra ATA Storage Controllers - 2651
Intel(R) 82801FB/FBM Ultra ATA Storage Controllers - 266F
Primary IDE Channel [Controller] (2x)

I also checked the handbook for a Dell Dimension 5000 and it says:

You have the following PCI, PCI Express x1 and x16

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Now i'm not wanting to spend too much as i'm pretty skint and Xmas is coming up and all so the cheapest decent option would be appreciated. I also know my memory could use an upgrade but that might be something i have to chase up as a present for myself so if you want to suggest any good options i'd appreciate that too!!

This is the one i looked up: Sapphire RADEON HD 4350 256MB/1GB

Thanks in advance guys,

Kev

 

you'll need any card that supports shaders v3.0 or higher. that one does, i'm just not a big fan of video cards that don't have a cooling fan, only a heatsink.

 

here's a similar card with double the onboard memory
http://www.lambda-tek.com/componentshop/index.pl?prodID=B238554

 

How many watts is your power supply Also how much is your budget?

I would suggest a 8600 GT

 

As requested what power do you have and if your budget can stretch the Nvidia 200 series cards can out perform most others.

http://www.nvidia.com/object/geforce_family.html