Crucial DDR4-3600 2x16GB running at 2133 - AMD Ryzen 2

DejaWiz

Fully [H]
Joined
Apr 15, 2005
Messages
20,398
Hello [H]orde,
Just helped a friend assemble a Zen2 build (CPU and GPU are placeholders until Zen3 5800X/5900X and RX6000 come out).

  1. Ryzen 5 3400G
  2. Asus TUF Gaming X570-Plus Wi-Fi
  3. Crucial Ballistix BL2K16G36C16U4BL 2x16GB DDR4-3600 CL16
  4. Asus Strix GTX 970

Updated to latest BIOS revision on the Asus website (v2607).
Tried enabling DOCP and set it to run at 3600 speed, but it boot loops a couple/few times, and then comes back with the RAM speed set to 2166. Have tried both DIMMS in various slots, and the result is the same.


This is the very first Zen2 build I've worked with, so I'm not too familiar with all the settings that need to be checked/changed to get the RAM to run at 3600...any ideas?


Thank you
 

THUMPer

2[H]4U
Joined
May 6, 2008
Messages
3,437
I would skip DOCP for now. Try to manually set ram speed, timings and voltage manually. 3600MHZ, 16-16-16-38, and 1.35 Volts. See if that works.
If that doesn't work. Run it at 3200MHZ with same timings and voltage. If this is just a placeholder CPU, then I wouldnt worry about not being able to get 3600. As Zen3 you should be able to with no issues.
 

thesmokingman

Supreme [H]ardness
Joined
Nov 22, 2008
Messages
6,229
You assume the IMC on that chip will handle that speed... and that density is hard to run to boot.
 

Starfalcon

Limp Gawd
Joined
Jan 7, 2020
Messages
379
Running 16 GB sticks are very hard to get to run at high speeds. I run 4 of them for 64 GB and can only run it at 3466, tried everything to get them to run at 3600, but could not get them stable no matter what I tried.
 

kirbyrj

Fully [H]
Joined
Feb 1, 2005
Messages
26,823
The 3400G isn't a Zen2 processor, so you'd expect it to run like a Zen+ processor where the memory tops out around 3200Mhz. Like mda says, run DOCP and then manually set the speed to 3000 or 3200. It's a limit of the CPU, not the memory.
 
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