No.
Your CPU is not very powerful, and even if this were possible than the loss of CPU power would probably result in at least a big a gaming hit as the limits from that graphics card.
You can get better performance in gaming by:
Tuning your PC (lots of guides on the web).
Cleaning your PC (blow it out, keep it dust free and also keep %temp% and %windir%\temp empty)
Virus scan your PC (Malwarebytes anti-malware)
Stop programs from starting with your pc (Sysinternals autoruns)