Question Will my PSU blow up?

[Yoburiforte]

Hi, I bought a secondhand gpu, the nvidia P106-100 (EVGA model, basically a GTX 1060 6GB without any display output, needs a CPU with an iGPU to be used for gaming) on a whim because it was very cheap (only 20 bucks). Seller claims it functions fine and physically the card looks surprisingly clean for a card whose sole function is to be used as a mining card. I'd like to test the card out on my rig (I already prepared the drivers and understand how to install this weird card) but my 250 watt psu is making this basically impossible. However, I seem to recall that the PCIe slot alone provides 75 watts of power and the additional 6 pin connector acts as additional power.

If I plug the card in as is, with no additional power connector, with my sucky ass psu, will it at least boot up? I really just want to check that and maybe see GPU-Z, the whole process shouldn't take more than 5 minutes. Or will my psu catastrophically blow up and take my whole computer with it?

Here's everything I have:
CPU: i5-4590 (undervolted to -50.0mV in the offset voltage slider in ThrottleStop)
RAM: 2 sticks of DDR3 8GB
Storage: 1x 240GB Sata SSD, 1x 512GB Sata HDD 5400RPM
Fans: 2x 120mm RGB fan, 1x 80mm fan
PSU: 250 watts, no name brand, came bundled with the case, fan still spins even if the pc is told to sleep

I could go to a pc store and ask them to let me check but many stores are closed at the moment due to a national 1 week long holiday so I will need to spend time looking around town just to find one that's open. And due to this weird card needing an iGPU, the process might get more complicated.

 

[DSzymborski]

If you're lucky, it won't try to boot up.
If you're unlucky, it might.

In which case, your hope will be that the PSU kills itself -- without killing anything else -- before something else dies.

This is a phenomenally awful idea.

 

[Yoburiforte]

This is a phenomenally awful idea.

It really is