Is a small power supply worth it

[harivsunil]

Hello there, I'm having a Pentium G2030 3.0 GHz with 4GB DDR3 RAM
I'm using Foxin FPS 500S SMPS & Power SupplyLink here
I'll buy a gtx 750 2gb soon. So my question is should i upgrade my power supply? If yes suggest me a cheap good smps, I'm using a H61MCS asus motherboard. Help me please ( Sorry for da bad English )
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[Dark Lord of Tech]

https://www.mdcomputers.in/smps/corsair-cx450-80-plus-bronze-cp-9020120-uk.html
Corsair CX450