I'm getting some upgrades for my pc and that includes a new power supply with the necessary amperage and 2 6-pin pci-e connectors to power my card. The card is already here but the psu probably won't get here until next week. I want to know if there is any way to run the card from the power coming from the pci-e slot. The card requires 2x 6-pin connectors, but i want to install it now to get that out of the way...
No, it will simply not work as the additional power supply is needed even for normal operation (not just gaming). This is designed to avoid overloading the motherboard's power circuits.
You can but the system will be very unstable, that's even if it boots at all.
I have heard of modifying the cables so they can plug into a gpu, but that is pretty risky. Your card should have came with at least 1 2 Molex to PCIe Converter cable.
