Power supply for the WS2812B Led strips

Hello,

I’m looking to buy a 5 metre coil of the WS2812b led strips (https://www.sparkfun.com/products/12028). I want to make sure my understanding of the required power supply is correct. Since the power required for every 60 leds/metre is about 18watts, I would require a power supply that is capable of providing atleast 90 watts right?

Correct.