You know "Woomack" what you have written has brought a somewhat more clear focus of some things into my personal view.
After all these years, AMD has still not really done much for actual memory bandwidth. Oh they have claimed support for the moves from various DDR ram to the next level but almost any gain was not from better ram handling at the the chip level but from an increase in ram speed and cpu speeds.
I know you wrote this >> "you can expect some improvement between 1600 11-11-11 and 2133 14-14-14" << but I wonder if that "some" is more like barely an improvement. I can remember seeing the calculations for actual available thruput of ram back when we were all wondering about the move to DDR3 from DDR2. In most instances that was a move from DDR2-800 to DDR3-1333. For the actual performance of the ram to remain on an equal footing at that big speed increase, the Cas had to be 7 for the DDR3-1333.
Here again I need to make sure we are still speaking most directly to the AMD side of things and we have DDR3-2400 ram aimed at AMD and when not shared in an APU, does very little overall since the faster ram loosens the timings and the speed gain results in next to no performance increase.
Now stopping to actually think on what I said, I more fully recognize what you have said to be more true than I first paid attention to. Nearly the only people or users that might gain from DDR4 are those using Intel setups and that includes servers which you mention above. The majority of servers being Intel based, might benefit from DDR4 ram but for the rest of us, DDR4 ram will be just another move to sell newer technology and make what we have today move another step toward obsolescence. We will not truly gain a boost other than a minor increase from just the increase in bandwidth of newer ram but not from any design that takes advantage of newer tech at the hardware level.
Now I see a little more clearly that there are differnces between AMD and Intel that are not so often addressed easily or noted so easily. More easily seen now why the old saying that tight timings is the way to go with AMD, still holds sway after all these years. It is a design thing.
Thanks man.
RGone...