Recently bought a used Dell Optiplex 760 with following specs:
1. Dell Optiplex 760 Core2 Quad Q6600 8MB Cache
2. 8GB DDR2 667Mhz
3. used EVGA GT430, 1GB DDR3, 128bits, with 96 CUDA Cores, (low profile)
Since installing EVGA GT430, i' m able to play GTA4, Entropia Universe on by-default MEDIUM settings. Haven't tried GTA5 and a lot of other heavy games but i' m pretty sure, Q6600 + GT430 128bits + 8GB DDR2, i will be able to play almost every old and new game on High, Medium and Low settings.
There is very little space to install a heavy duty graphics card on this Dell Optiplex 760 without any serious modification.
The whole system with Q6600, 8GB DDR2 RAM and GT430 1GB DDR3 128bits is now capable enough to play almost every old or new game with HIGH, MEDIUM and LOW settings.
GTX750 2GB DDR5 is about 150 Dollars.
GT740 2GB DDR3 is for 100 $$ and
R7 240 2GB DDR3 is for 80 $$.
where as the used graphics card i managed to get is
GT430 1GB DDR3 is for JUST 26 $$.
The whole computer system with Mouse, Keyboard, Display etc cost me about 180 $$.
GTX750 is definitely much better than GT430 but 26 $$ vs 150 $$ makes me think, that, when im getting PhysX with GT430 and the game performance is also good enough than why would i get GTX750 which may not work well in this Dell Optiplex 760 and i may end up wasting money.
Check out the following youtube links.
this is when i was searching for a low profile graphics card and saw GT430 ad on OLX.
https://www.youtube.com/results?search_query=nvidia+gt430