Originally Posted by SuperZan
I think there may be something to that, though of course I think microcode is playing a role as well. I think come May we'll have a very good idea of where the weight of the limitation falls. That said, I'm not unhappy with performance at 2933 at the moment.
Dunno, suddenly where I thought the jury was out on that I think we're looking at the wrong end of the stick
. At the moment the whole thing is "platform is immature", what if it isn't for RAM for upto 3200MHz?
I'm using what is supposed to be 3200MHz strap, now there was a post in The Stilt's thread.Warning: Spoiler! (Click to show)
Next on AMD community site. Quote:
Personally I'm not willing to risk the stability and data integrity for slightly higher memory clock, which provides diminishing improvements over the highest frequency available at 100MHz BCLK (3200MHz).
. Then in an earlier post.
In order to reach higher MEMCLKs it is currently better to use the lower memory ratios, which have been available since the beginning and therefore are fully functional and validated.
We intend to issue updates to motherboard partners in May that will enable them, on whatever products they choose, to support speeds higher than the current DDR4-3200 limit without refclk adjustments.
So from that 3200MHz is working as far as AMD concerned, your thoughts?
Then we see on that same page point 8 showing officially supported speeds. Even though 2993MHz / 3200MHz strap exists, is technically official as AMD provide that "stuff" to mobo makers, it is isn't the official line. Why? well my opinion is perhaps they have seen with their own internal testing only some chips hit 2666MHz+.
Then let's look at info under PUTTING IT ALL TOGETHER
, they have 1800X (what we would think is best bin), then they have C6H with 16GB G.Skill (2x8) DDR4-3200. And they test "Clocked to 2933MT/s: 14-14-14-30-1t" , seems strange that to me, why were they not at 3200MHz?
Any how maybe just my own conspiracy theory'ing. This whole wave of looking at this was inspired by @Scotty99
when we were discussing RAM speeds in another thread. He said he had example of his RAM / mobo combo reaching higher speed but his was limited to 2400MHz. Then I have seen at least 4x (inc 1 of my chips) which do not reach above 2993MHz on C6H, one of the guys has a 1800X IIRC, another 1700X, then lastly 1700 IIRC. Only the 1700X owner (bluej511) has Corsair RAM, all the other 3 examples are G.Skill aka Samsung B-Die.
1744 is with a bios performance bias for CB15, 1696 is without and 1667 is without but 2400MHz C14 RAM.Edited by gupsterg - 4/3/17 at 4:31pm