Gateway SX2800 PC Upgrade......

[UndercoverGTR]

I have had the Gateway SX2800 (slimline) PC for about a year, but now, the performance of this PC just isn't good enough for newer games, like APB Reloaded or Need For Speed World. The stock SX2800 has integrated graphics, so i was thinking of upgrading the graphics card.
I have read a lot of forums saying I should get a low profile card with a low power requirement. The cards I found on Newegg that fit this description just aren't powerful enough, so I decided to just move all the necessary hardware to a new case. I was thinking of getting to following products:

Cooler Master Centurion 534 - http://www.newegg.com/Product/Product.aspx?Item=N82E16811119106

Powercolor Radeon 4650 - http://www.newegg.com/Product/Product.aspx?Item=N82E16814131360

Antec Earthwatts Green 380W - http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033

Please let me know if I need any other additional hardware (I am just moving the hardware from my SX2800 to the new case)
or if I can improve the PSU, graphics card, etc without spending a whole lot of extra cash. (My budget is $150 - $175) Thanks in advance!

 

[AstroTC]

the 4650 isnt a powerful card and frankly isnt worth it and if your going to upgrade ur case the a low profile card wouldnt be needed either Just to be safe could we have the full specs of ur PC?. Id recommend

Case+PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147091

GPU
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125341&cm_re=gts_450-_-14-125-341-_-Product

 

[UndercoverGTR]

Thanks for replying,
My PC specs are:
- Intel Core 2 Quad Q8200 @ 2.33GHz (4 CPU)
- Default (OEM) 4096 MB DDR3 RAM
- Intel GMA X4500 (G43 Express Chipset)
- Acer WG43M Motherboard
- 640 GB SATA Hard Drive
- Default (OEM) 210W PSU

These are only the specs that i can remember, I'm not sure if anything else matters. I reviewed your suggestions, and I like the case. I might reconsider the graphics card. Thank you for helping!
Anyone else that can help may reply.

 

[UndercoverGTR]

Best answer selected by UndercoverGTR.

 

[AstroTC]

Sorry for the late reply..I recently got the email notice for ur response.
Ur cpu is very capable but a bit of overclocking would do it some justice the only thing "iffy" there is your motherboard. Im not finding anything about it so I wouldnt know if you would be able to overclock or not. Also I see the gigabyte card i recommended went up in price so to stay in your budget you can get this http://www.newegg.com/Product/Product.aspx?Item=N82E16814134119&cm_re=gts_450-_-14-134-119-_-Product same model different manufacturer.

If you have anymore questions feel free to ask.