235w PSU GPU suggestions

afex54

Honorable
Sep 21, 2014
77
0
10,630
I made a thread earlier about my pc but after researching profusely it has become obselete (the thread, not my pc)
the only big question I have left is what GPU to get,
my low power psu being my biggest obstacle
30-40 fps in most games on low would be nice I guess.
anyway here are my specs and id appreciate the help a lot:

Dell optiplex 780 , small form factor case
Core2 quad 2.66ghz Q8400
4gb (2x2) DDR3 Ram,
no graphics card (64mb intergrated)
235w PSU (severely lacking I know)
250GB 7400 3.5'' HDD
250GB 5400 2.5'' HDD
1360x738 res display,
 

afex54

Honorable
Sep 21, 2014
77
0
10,630

thanks for the help and wow that inexpensive? was worried Id be spending upwards of 200.
would that card run games like I mentioned above?
''30-40fps...low...most games''
 

afex54

Honorable
Sep 21, 2014
77
0
10,630

ok thanks, I guess this is a bit off topic , but why are gpus the same model (?) i.e GTX750 but are completely different shapes and sizes , some even powered externally but other brands of the same one arent