Phantom power or no?

[ItsMeTomas]

So I bought a cheap Xlr condenser microphone called Tonor bm-700. And I tried it out without phantom power on my Desktop PC and it sounded kinda quiet. So I used the Microphone boost in the sound settings up to 20 dB and it picked up a lot of static noise. It was plugged at a rear panel of my PC via 3.5 mm Jack because the USB soundcard that they sent with it was absolute trash and after some thought what could cause so much static noise I tried out the front panel and surprisingly there was minimal static noise and when I used Microphone boost there surprisingly still not that much static noise but there still is some and I sound not as loud as before hence why I'm considering to buy a phantom power but I don't know if I will sound louder without using microphone boost.  Any help is appreciated.

 

Info about mic: https://www.amazon.com/TONOR-Professional-Microphone-Podcasting-Broadcasting/dp/B01KHMUQ2M/ref=sr_1_2?ie=UTF8&qid=1543103797&sr=8-2&keywords=tonor+bm700