PSU for RTX 2070

[Valentine Green]

Warning: I'm not a native English speaker, therefore reading my text might cause some gore. Sorry.

Hi everyone! I want to learn GPU-renders (Octane+RS), so I'm going to buy RTX 2070 instead of my current 1050Ti. But the PSU in my sistem is only 500W.
I have ~680$ of budget, meanwhile, here in Russia, RTX 2070 costs like ~650$. Thing is, I'm running low on budget and probably will not be able to buy decent PSU soon.
Will my current PSU be able to run RTX 2070 properly, without burning down whole PC and without the risk of a sudden Exterminatus?
Or I should save some money and buy better PSU?

PSU: InWin Powerman 500W [PM-500 80plus]
Specs (no overclocking here): 
i7 2700K + Gamma Archer Pro
ASRock H61M-VG3 (yeah, old lady)
Gygabite GTX 1050Ti
2x 8Gb DDR3
WD Green 240 GB
WD Gold 2 TB
TOSHIBA DT01ACA050 500GB (I can remove this guy, if it can help to lower power consumption)
Win 7 Ultimate

Thanks, and have a Happy Holidays!

[lmeneses]

I would upgrade before purchasing a 2070, especially if it is just 80 plus

[17030644]

buy a better psu