A newbie updating a older system

[TheJonatron]

I've stumbled into this confusing world mumbling 'graphic cards' in an annoying voice, like that kid out of 'The Wizard'.
A 2005 computer, hasn't been up to much (or anything at all) as far as gaming has been concerned.

Model: iQon.ie 865G7MF rev1.0
Motherboard: Foxconn 8657MF-series
2.80 gigahertz Intel Pentium D (Dual Core)
496 Megabytes Usable Installed Memory
3 PCI, 1 AGP slot


And the integrated graphics card, if I recall, is ' Intel (R) eXtreme 2 '.
Extemely poor, that is.
I've trying to look through the resources on this site using my limited knowledge, to some marginal success.
I intend to buy 1GB of DDR2 RAM (£5, says amazon) , giving me 1.5GB ram.
Not looking good? My only comfort is to hear that the processor is good.

Here's the stitch. I want to be able to play games of around the benchmark of those in the orange box in mid-to-high settings, but my budget is very limited and undeterminate. Around £20-to-£30 would be managable, and I intend to buy second hand, so a few suitable cards would be ideal, since I will likely not have a flat pick of everything on what I hear is the limited range of AGP cards.
I'll be carrying on looking, but if this position rings any bells, or the price I hope for is simply not going to happen, I would appreciate any input.
If I should supply more information about my PC, please inform me.

 

[Hindesite]

Here's the stitch. I want to be able to play games of around the benchmark of those in the orange box in mid-to-high settings, but my budget is very limited and undeterminate. Around £20-to-£30 would be managable, and I intend to buy second hand, so a few suitable cards would be ideal, since I will likely not have a flat pick of everything on what I hear is the limited range of AGP cards.

Oh wow, that's a tough price range to work with... Um, maybe a Radeon HD 4650? Anything less then that wont get you what you're looking for performance-wise out of Orange Box. :/

Edit:
After looking into it a bit, I forgot how expensive newer cards are on AGP. You might have to go with a 3650 like this one if you wanna go AGP, but you'll be stuck with GDDR2.

Are you sure one of those PCI slots isn't a PCIE 2.0? If they are you could get a 4650 at the price you want

 

[xc0mmiex]

4650 or 3850 is your choice... stay away from DDR2 memory

 

[Bluescreendeath]

4650 DDR2 is fine. The DDR3 version is better but rare.

The 4650 DDR2 can still play COD4, COD5, and the vast majority of steam games at almost maxed out graphics at 1280x1024