DDR4, 3600 MHz - PC4-28800U vs NON U and what the U means?

Miltos Ser

n00b
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Aug 18, 2016
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28800U VS 28800: made a quick research and i didn't find many details on this. What the U means at the end of the numbers?
I read somewhere that it means Unbuffered. But i dont think this is correct. The U cost more over the non U. Unbuffered memory is mostly use for home use and buffered to home systems. Thats why the buffered ram cost less.
Check the image. The 2 sticks cost less VS the 2 sticks of the U version.
 

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JEDEC changed the labeling standards for DDR4 so that PC4-28800m (where m is the module type) is no longer correct. It should be PC4-3600aa-m, (where aa is the speed bin).

in the context of the older labeling standard U means unbuffered, and no letter means someone got lazy.
B01FF4EE-A788-4426-9382-B9E0A0267966.jpeg

The price difference is just supply and demand.
 
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