Question ram

Jul 13, 2019
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I have 4 sticks of G. Skill TridentZ f4-3000c16d 8gb. My gigabyte x570 pro is on it's way. the only numbers that change from stick to stick are the numbers below the bar code.
My question is that my Ram has # 21 & 22 listed below the bar code on each stick, the other two have 75 & 76.
Should the ram have numbers in succession, i.e 21, 22 , 23, 24? Or is this newbie stressin' bout nothing?