How can I state this politely?
The Nvidia GeForce 9500GT is a definite step up from using Integrated Graphics.
No debate needed there.
But it only has 32 Stream Processors.
Think of Stream Processors as a 'Graphics Information Highway'.
They are essentially the lanes of the highway.
The more lanes you have, the more graphics information can be transferred from the graphics card to the Processor, and vice-versa.
Having 32 Stream Processors is like having a 'Bottleneck' in the road.
Equate that to a roadblock put up for road construction, where 8 lanes are dwindled down to 1 lane.
Traffic slows down.
This is seen when using intense games. Frame rates drop down, the game freezes, and graphics are poor unless on low settings. (Or not at all)
Here, take a look at Evga's version of the Nvidia GeForce 9500GT graphics card.
Read the Specifications at the bottom, watch the video.http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4111742&CatId=3669
A decent graphics card shouldn't 'Break the Bank'.
You don't need a $500 graphics card to slam those games.
You might want to look into an Nvidia GeForce GT 240 graphics card.
96 Stream Processors.
512MB of DDR5 graphics ram memory. (That's DDR5)
550MHz Core Clock
1340MegaHertz Shader Clock
3588MHz Memory Clockhttp://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5516908&CatId=3669
Better than that?
Nvidia GeForce GTS 450 Superclocked.
1024MB of DDR5 graphics ram memory.
192 Stream Processors.http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=6655890&CatId=3669
For the above two graphics cards you need a decent power supply.
IF, the power supply you have DOES produce an honest maximum wattage of 400 Watts,
AND has at least 30 Amps on the 12 volt power rail. (Or 12 volt power rails), you're okay.
I would recommend an OCZ StealthXStream 2 / 600 Watt power supply though, when you can afford it.
It can produce over 700 watts if kept at a temperature of 48.4 degrees Celsius.
(119.12 degrees Fahrenheit )
Has FOUR 12 volt power rails that can supply up to 18 Amps EACH.
(Total of 72 Amps)
Has all the power cables you'll need, plus ones for the above graphics cards.
(Can handle them with NO sweat)http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=6491962&CatId=106
Not advertising for Tigerdirect. Just using them to show examples.