https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 03 May 2026 20:02:10 +0000 Fri, 13 Oct 2017 19:39:10 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=6322 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37929&title=ab350-pro4-ram-speed-question#37929 Author: datonyb
Subject: 6322
Posted: 13 Oct 2017 at 7:39pm

7 -------because with 4 sticks the cpu's memory controller is working twice as hard as with 2

you missed out a few things
did you try am4 boot training set to auto
did you set geardown to on
]]> Fri, 13 Oct 2017 19:39:10 +0000 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37929&title=ab350-pro4-ram-speed-question#37929 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37928&title=ab350-pro4-ram-speed-question#37928 Author: foppe
Subject: 6322
Posted: 13 Oct 2017 at 7:33pm

Thanks for replying.

Yes, those, all with hynix A-die (21nm), exactly the same timings / chips according to Taiphoon.
Guess I should've said a bit more about what I've already tried.

2. have tried with voltage up to 1.45V, everything on auto. Won't boot.
3. Have tried with CPU oc off (because once it's failed to apply xmp settings once it ignores those settings anyway until you reset / reboot /reapply CPU oc timings).
4. Tried BGS disabled, BGSA enabled; makes no difference (though I'll leave it on BGSA from now on)
5. ProcODT set to 60Ohm, 53 won't boot at all.
6. SoC currently set to 1.05V, will try 1.1 later
7 -- why would it be necessary to lower these when the memory goes to 3066 with same timings when I only use 2?
]]> Fri, 13 Oct 2017 19:33:20 +0000 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37928&title=ab350-pro4-ram-speed-question#37928 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37921&title=ab350-pro4-ram-speed-question#37921 Author: datonyb
Subject: 6322
Posted: 13 Oct 2017 at 5:55pm

it would also help if you told us what exact ram sticks they are
im guessing they were
CMK16GX4M2B3000C15Wwith cl 15/17/17/35 timings
]]> Fri, 13 Oct 2017 17:55:12 +0000 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37921&title=ab350-pro4-ram-speed-question#37921 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37920&title=ab350-pro4-ram-speed-question#37920 Author: datonyb
Subject: 6322
Posted: 13 Oct 2017 at 5:54pm

aha !

i have some experiance with this issue
here are some steps to help
you may find one of these or a combination of a few of these is needed

1, make sure am4 boot training is set to AUTO
2 tickle the ram volts up a bit (1.375 volts is quite usual to help / 1.4 volts isnt anything mad for some ram overclocking or major issues)
3,try the ram without any cpu overclock (this cpu clocking can affect ram) if its ok with no cpu clocking then try upping your cpu vcore a little more and then test ram speed
4, SR ram settings = geardown mode on /bank group swap disabled /bank group swap alt enabled
5, proc odt try 53.3 ohms and 60 ohms
6, soc volts to 1.1 (but im pretty sure your board dosnt allow this option)
7,reduce the cl timings slightly eg change cl15/17/17/35 to cl16/18/18/18/40/75


hope this helps
]]> Fri, 13 Oct 2017 17:54:01 +0000 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37920&title=ab350-pro4-ram-speed-question#37920 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37917&title=ab350-pro4-ram-speed-question#37917 Author: foppe
Subject: 6322
Posted: 13 Oct 2017 at 4:35pm

So I currently have 4 sticks of SR 8gb memory running at 2666, which will warm-boot at 2800, with voltage at 1.35. When I use only 2, I can get both sets to cold-boot at 3066. But with 4 sticks, they refuse to boot at any speed above 2800. Any suggestions as to what I can try to improve on that? Or is improvement unlikely because '4'?
]]> Fri, 13 Oct 2017 16:35:34 +0000 https://forum.asrock.com/forum_posts.asp?TID=6322&PID=37917&title=ab350-pro4-ram-speed-question#37917