Originally Posted by The Pook
The H100 is a 9 year old AIO with a gen 1 pump, and yeah, it was super loud. It made me go back to air after I moved from AM3. Even the fans are 40dBa on the H100 versus 20.4 on the Pro lineup.
If your ("modern") AIO is noisy then it's faulty
First off, almost all AIOs you are referring to are CLCs, a sub-group of AIO and not near as well built as AIOs that are not CLCs. Asetek's almost monopoly on CLC cooling with sales as good as they are means they have no real incentive to improve product. They change the looks a little, add RGB and call it a new 'generation' product.
All of this 1st gen, 2nd gen, etc hype is just that, hype with little to no real changes in pump, raidator, etc. I have seen nothing that indicates there is any real functional difference in performance from original H100 vs most resent Asetek CLCs using same size radiators. They have changed to quieter fans, but that has also lowered their maximum cooling ability.
Asetek has published almost nothing of their pump performance so we have no way of knowing what their lift and flow rates .. but from what few independent tests I've seen there is no real difference in pump flowrate from original Asetek to latest generation .. all have a flow rate about equal to what a healthy adult can urinate which is 40-60 L/h .. somewhere between 34 L/h to 61 L/h.
If you have any data and supporting links please post them so we can see the differences.