Do I need to get a new graphics card?

[QuadSquad]

Hi. I got told by some random guy that my CPU is fine, [I wanted to get a new processor]
and that my INTEGRATED graphics card is holding my pc back from its full potential.

Here are my specs:

Video card:Nvidea GeForce 9200 [I believe it is 512 MB(?)]
Processor: AMD Anthlon II X4 645 [Quad] @3.1 GHz
RAM: 4GB DDR3
Hard Drive: 1TB
System rating: 4.3

I can play most games @70-100%, but I'm looking for full 100% gameplay.
I don't really care about HD gaming, because I care more about gameplay.
The only game that can run @100% speed (that I've gotten) is Digimon World 4 [GC].
Other game stats:Sonic adv 2: 86-100+%, Sonic Colors 70-86%, SSBM 80-100+%
New super mario brahs: 80%-90% map/scenes, 100+% in stages.
etc etc.

Can you guys help me?

[sixor]

minimum 8800 9800 4830 4850 4770
better 5770 450
nice 460 5850 6850
great 5870 6870 560
uber 570 6950

[dannzen]

try to play at low resoltuion like 480x320
if you get 100% its your gpu

[QuadSquad]

try to play at low resoltuion like 480x320
if you get 100% its your gpu

Hm lol, lowest resolution gave me a small speed up on Sonic adv 2, but then I tried low res. on a wii game, and it didn't change the way it used to look/speed, meaning I got the same bad FPS xD.
Do you think I still need a better graphics card?
if so, how much memory? 1gb? 1.5? o_o
brand? wut? xD
Thank you all for replying <3

[dannzen]

http://www.newegg.com/Product/Product.as...6814102878

this one is cheap and more than enough for dolphin

[QuadSquad]

http://www.newegg.com/Product/Product.as...6814102878

this one is cheap and more than enough for dolphin

Oh okay, thanks xD, I'll check that out :p

[ExtremeDude2]

http://www.newegg.com/Product/Product.as...6814102878

this one is cheap and more than enough for dolphin

How dare you show him my card! (you never knew about it till I found it did you)

[dannzen]

next time i quote you but it is really cheap

[ExtremeDude2]

next time i quote you but it is really cheap

Yes I was (happily) surprised.

[QuadSquad]

http://www.newegg.com/Product/Product.as...6814102878

this one is cheap and more than enough for dolphin

How dare you show him my card! (you never knew about it till I found it did you)

Thank you, I'll save up some $ <33
Thanks to everyone for the help :].