Okay, good to know you've got the cooling thing handled.

Sounds like your only options are a beefier power supply or a second power supply. Agreed that the one you initially purchased should handle the load, but your empirical evidence suggests that it can't handle the load under all possible conditions. Rube Goldberg solutions with capacitors are the wrong way to go about it; get the right power supply for the job.

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Tony Fabris