AGESA 1002a

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   The loss in bandwidth is due to AMD changing the 2nd and 3rd order default timings settings for the memory controller, some memory kits do not behave as well as other, keep in mind UEFI's in the 4.xx range are designed for Pinnacle Ridge/Raven Ridge not that much for Summit Ridge.What memory kit do you use? I use a Corsair Veangance LPX RED 2400MHz kit and I can push it to 3333MHz with 1.4V with no problems, my bandwidth is still in the 50-51GB/s range with my 2400G, with latest 4.51 Beta bios, its still lower by about 3-4GB/s than with 4.40 but that is due to AMD's AGESA code, ASRock currently uses 1.0.0.1a, latest 1.0.0.2a maybe fixes the problem, but again its focused on fixing the Power Management bugs for Raven Ridge and offer new options and improved memory speeds for both Pinnacle Ridge and Raven Ridge, there is a user with 2700X that managed to push 4000MHz for memory with 1.0.0.2a.
It does happen on most platforms its an AGESA issue but you need to compare same memory Kit to know but it does happen on other manufactures as well

Take a look here https://www.youtube.com/watch?v=jIkQCszgW5Q

There are many other bugs that need fixing on ASRock boards, I reported at least 11 bugs to ASRock support a month ago and they confirmed all of them, they are surely working on UEFI's with 1.0.0.2a and will release them in the coming weeks, I estimate somewhere between the Windows Sping Creators update release, thats when AMD will release Adrenaline drivers for Raven Ridge also. 
Almost all bugs in current UEFI are mostly due to AGESA and SMU firmware bugs, but ASRock has 3-4 bugs that are their fault, like FAN Control bugs, and thins like M.2 slot priority vs SATA ports, bad naming for SATA ports, you cannot disable SATA/LAN controller and things like that, but they dont affect performance and stability, just usability.

here is a screen with latest UEFI and 3333MHz memory, all default timings

Cheers

Edited by cristy6100 - 23 Apr 2018 at 8:51pm

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cristy6100 Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 15 Mar 2018 Location: Romania Status: Offline Points: 269	Post Options Post Reply Quote cristy6100 Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 8:43pm
	The loss in bandwidth is due to AMD changing the 2nd and 3rd order default timings settings for the memory controller, some memory kits do not behave as well as other, keep in mind UEFI's in the 4.xx range are designed for Pinnacle Ridge/Raven Ridge not that much for Summit Ridge. What memory kit do you use? I use a Corsair Veangance LPX RED 2400MHz kit and I can push it to 3333MHz with 1.4V with no problems, my bandwidth is still in the 50-51GB/s range with my 2400G, with latest 4.51 Beta bios, its still lower by about 3-4GB/s than with 4.40 but that is due to AMD's AGESA code, ASRock currently uses 1.0.0.1a, latest 1.0.0.2a maybe fixes the problem, but again its focused on fixing the Power Management bugs for Raven Ridge and offer new options and improved memory speeds for both Pinnacle Ridge and Raven Ridge, there is a user with 2700X that managed to push 4000MHz for memory with 1.0.0.2a. It does happen on most platforms its an AGESA issue but you need to compare same memory Kit to know but it does happen on other manufactures as well Take a look here https://www.youtube.com/watch?v=jIkQCszgW5Q There are many other bugs that need fixing on ASRock boards, I reported at least 11 bugs to ASRock support a month ago and they confirmed all of them, they are surely working on UEFI's with 1.0.0.2a and will release them in the coming weeks, I estimate somewhere between the Windows Sping Creators update release, thats when AMD will release Adrenaline drivers for Raven Ridge also. Almost all bugs in current UEFI are mostly due to AGESA and SMU firmware bugs, but ASRock has 3-4 bugs that are their fault, like FAN Control bugs, and thins like M.2 slot priority vs SATA ports, bad naming for SATA ports, you cannot disable SATA/LAN controller and things like that, but they dont affect performance and stability, just usability. here is a screen with latest UEFI and 3333MHz memory, all default timings Cheers Edited by cristy6100 - 23 Apr 2018 at 8:51pm
	Main Rig: AMD Ryzen 2400G \| ASRock Fatality X370 ITX/ac UEFI 4.90 \| Corsair LPX DDR4 2400@3200 1.35V \| Corsair RM650i PSU \| CM ML120L AiO Cooler

freestaler Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Mar 2018 Status: Offline Points: 71	Post Options Post Reply Quote freestaler Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 7:43pm
	Hopefully Asrock fix on Tachi X370 the Memory Bandwidth Problem (25% loss with L.4.41,P4.6,L4.61 compare to P4.40) and fix Profilesaving (Profile not include AMD CBS Settings). Yes, Asrock Support say is an AMD Bug, but why hasnt the other Plattforms liks Asus and MSI Boards with the same AGESA and newer this bug? I hoppe asrock fix. Otherwise its slowly time to think about an other Board and a RMA. Other manufactor could fix Spectre V2 without loss of Memory Bandwidth on Ryzen 1xxxx. Looks for Information: http://forum.asrock.com/forum_posts.asp?TID=7953&PID=50294&#50294 Edited by freestaler - 23 Apr 2018 at 7:53pm

paarsand Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Apr 2018 Status: Offline Points: 19	Post Options Post Reply Quote paarsand Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 5:00am
	How do you know? Are asrock usually that fast?

cristy6100 Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 15 Mar 2018 Location: Romania Status: Offline Points: 269	Post Options Post Reply Quote cristy6100 Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 4:59am
	No need for support ticket, the 1.0.0.2a UEFI's are in the making, should release this month or early next month, they should come with many bug fixes also. Its just the waiting that kills :)) Cheers
	Main Rig: AMD Ryzen 2400G \| ASRock Fatality X370 ITX/ac UEFI 4.90 \| Corsair LPX DDR4 2400@3200 1.35V \| Corsair RM650i PSU \| CM ML120L AiO Cooler

paarsand Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Apr 2018 Status: Offline Points: 19	Post Options Post Reply Quote paarsand Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 4:38am
	I Created a support ticket asking if there was any thoughts about this. Guessing asrock's support maybe is not so fast, but i'll update here if i get an answer. :)

paarsand Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Apr 2018 Status: Offline Points: 19	Post Options Post Reply Quote paarsand Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 2:45am
	Yeah, noticed that article my self. Though 1002a is brand new, so it will probably be a moment before it arrives. I would guess that AMD's pushing hard, since this is basically fixing the whole platform of cpus.

cristy6100 Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 15 Mar 2018 Location: Romania Status: Offline Points: 269	Post Options Post Reply Quote cristy6100 Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 2:43am
	It is explained here: https://overclock3d.net/news/cpu_mainboard/amd_boost_s_raven_ridge_s_performance_and_smoothness_with_agesa_1002a/1 I reported these issues almost a full month ago, and some people said I was wrong and some admitted the problems you can search the forum here for the threads where I explained the issue lies in the AGESA power managment code part of it, and part of it in the SMU engine firmware. Well hopefully ASRock releases the UEFI's with 1.0.0.2a in the near future Cheers
	Main Rig: AMD Ryzen 2400G \| ASRock Fatality X370 ITX/ac UEFI 4.90 \| Corsair LPX DDR4 2400@3200 1.35V \| Corsair RM650i PSU \| CM ML120L AiO Cooler

paarsand Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Apr 2018 Status: Offline Points: 19	Post Options Post Reply Quote paarsand Report Post Thanks(0) Quote Reply Posted: 23 Apr 2018 at 2:01am
	Hey Asrock, please check out the performance-difference for APU's like 2200g and 2400g. Really looking forward to this update to my ab350m-pro4! https://www.youtube.com/watch?v=dggzOlFvm38