Hello, im wondering if an a4-5300 will bottleneck a hd 7750, im currently running with a gt-430 and want to upgrade to a more powerful graphics card but i am worried that my cpu will bottleneck the new graphics card should i purchase the graphics card or just spend the money and upgrade my cpu?
No your CPU will not bottleneck the gpu. You're fine with that setup.
what about a sapphire hd 7770 ghz 1gb ddr5 edition? i have 2 extra molex plugs on my PSU (which i can use with an adapter to get a 6 pin) and plenty of room in my case. do you think i would run into any problems with that card? be it bottlenecking or power limitations?
No problem with the 7770 either. Your CPU, PSU will be able to support a HD 7770.
The least reported PSU a 7770 worked on was a 300watts PSU(good, branded PSU, not the cheap ones) so I'm pretty sure that your PSU will be able to handle it too.