That is a sweet power supply, a good buy. Check out the power graph for it here:

Another EVGA P2 is on our test bench today. The 750 P2 features 750W max power, modular cabling and Japanese caps throughout. This PSU promises high performance and increased reliability, so it looks to be a great choice for enthusiast PCs.

www.tomshardware.com

notes:

86% efficient at 75 watts

88% efficient at 100 watts.

90% efficient at 150 watts.

91% efficient at 250 watts.

__Ignore the others, your power supply is excellent for this.__ The advice you received about getting at least a 80+ gold was correct.

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You know your going to add another GPU in, right? It took 7 years for me to do it, but I eventually added a 2nd GPU. My 7 year old 650watt evga psu is happily pulling 480* watts off the wall as I type this.

*210-GQ-0650-V1 running rx6900xt + vega56 + 4790k + cooling as it mines** eth + me using the computer

** 91.53 Mh @ 480w /w .13 kWh = $5.75 profit per day or $2099.45 per year