Will this video card cause problems?

I just bought a new computer and wanted to upgrade the video card. The video card requires a 300 watt power supply. My computer's TOTAL power supply is 300 watts, so is it okay to use this video card? I don't want it causing problems with the CPU or anything.|||No problem at all. The companies state the requirements of power supply calculating the processor and motherboard power usages. So if they have stated 300 watt, that means you need 300 watt power supply irrespective of what other computer parts use up.|||you have to upgrade your PSU coz your graphic card will not get the required power to run and will eventually not perform well and you might get a burned PSU after few hours may be minutes.. well if your PSU is really a good one like cooler master or sth then you can give it a try but no guarantee..|||no problems|||psu will need upgrading as well

as its a one off get a 500watt one