Changing GPU from 7750 to GTX 750 ti/760

Solution
the q9450 wont bottlenck a 750ti but you will need more power... i know its getting on but the intel core 2 quads were no slouch when it came to gpu bandwidth so yeah you should get all the performance a 750ti can deliver. you may have issues on older games that are single threaded but they are becoming rarer every day most games now need at least 2 threads so like i say you should have no issues with bottlenecking.
the 750ti takes 75w from the pci and if its not an oc version then you wont need an additional 6 pin.
but a minimum 450w psu would be a good investment for your system...
only 760 makes sense as far as the performance gain goes, the 750 ti might work on the current config but it's not worth spending as much as it costs for a single digit performance increase.

for 760 you'd need both a faster cpu and a more powerful psu.
 
the q9450 wont bottlenck a 750ti but you will need more power... i know its getting on but the intel core 2 quads were no slouch when it came to gpu bandwidth so yeah you should get all the performance a 750ti can deliver. you may have issues on older games that are single threaded but they are becoming rarer every day most games now need at least 2 threads so like i say you should have no issues with bottlenecking.
the 750ti takes 75w from the pci and if its not an oc version then you wont need an additional 6 pin.
but a minimum 450w psu would be a good investment for your system...
 
Solution