Help me!? Will my power supply be enough for a new graphics car? (Pre-built)

ConaaG

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Dec 6, 2014
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I have a 240V PSU. I opened my Pre-built PC up and it says that it is +12v -12v 0.3 and that is all i can remember. It also had 85W and 200W written on it. I want to upgrade my NVIDIA Geforce GT 620 1GB to Geforce Gt 750ti. I have an amd a10 6700 6gb ddr3 ram. Help? Im not to knowledgable on power supplys!
 

ConaaG

Reputable
Dec 6, 2014
40
0
4,530
The thing is i looked on the nvidia website and it said that the 620 needed atleast 300 watts and it runs fine on my prebuilt pc. The 750ti says atleast 300 watts so i think i will be ok. I may upgrade my psu in the future, is it hard to upgrade it?