AGESA 1.0.0.6a

Asingo wrote: When will next agesa update come out?

Windows98 wrote: BoneCrusherXes wrote: Uneven CAS values like 13 or 15 are not supported by AMDs AGESA code for (correct if if im wrong) 2666mhz and higher. So this is a limitation that applies to all AM4 boards. What you can do is either run with CAS 16, or try CAS 14 with GearDown enabled for example, if it works you might also want to try with GearDown disabled. Got around to testing tonight. All of the above appears true. At or below 2400, my sticks will commit @ 15-15-15-35 with no problem. As soon as I get into the 2666+ range, the CAS changes from 15 to 16 no matter what I put in there.  Geardown doesn't make any difference, as soon as I disable it my board no longer posts.  I haven't had any issues with 2800 @ 16-15-15-35 so I guess that'll do for now.

Geardown mode, which is enabled by default (Auto setting) at speeds above 2667, lets the command rate run at 2T, or as AMD puts it, "Allows the DRAM device to run off its internally-generated ½ rate clock for latching on the command or address buses... 2T CR can be very beneficial for stability with high memory clocks, or for 4-DIMM configurations.".

https://community.amd.com/community/gaming/blog/2017/05/25/community-update-4-lets-talk-dram

So disabling geardown mode forces the use of your CR setting. If it is 1T, that is more difficult to maintain and would explain the failure to POST.

Ryzen Master has odd CAS, etc values in the drop down selection list for memory over clocking. If they were not usable, why include them? But who knows? It also seems to have a maximum of 3200 for the memory speed. Unless that is based upon the XMP speed of your memory. Is anyone able to select a memory speed in Ryzen Master above 3200?

About the next AGESA update, with the recent release of Threadripper, AMD is focused on that. Does Treadripper use the same AGESA microcode as Ryzen 7, 5, 3? Apparently it uses the same Zepplin dies, but binned higher, and seems to have a bit higher DDR4 speed potential. Again, who knows?

one is flash based (eg run in bios flasher)
and one is dos based (eg boot pc into dos and run)

I finally got my 4 sticks to work stable @3066MHz CL14 

newest Agesa update isnt suomething to worry about, you want to flash.