[SOLVED] XMP Profile Not Saving

[Skippy4pres]

Hi. Video below.

I have all four of the same ram sticks (4x8). I have run MemTest 86 and they are all stable. I've made the change to 3600 (advertised) in my XMP profile, but when I save and exit, I log back in and the profile does not seem like it has saved. Does anyone have any tips?

https://imgur.com/a/BD5VWoi

Thank you!

 

[boju]

That'll be the limiting factor using four dimm slots.

2nd Gen AMD Ryzen Supported RAM Speeds

Just like the original Ryzen CPUs, the 2nd Gen Ryzen processors from AMD support a range of different RAM speeds depending on a number of factors. This information is not easily accessible to the public, however, so we decided to put together a quick post with the information we received from...

www.pugetsystems.com

Test two sticks in 2nd and 4th slot and see.

 

[Third-Eye]

Hi. Video below.

I have all four of the same ram sticks (4x8). I have run MemTest 86 and they are all stable. I've made the change to 3600 (advertised) in my XMP profile, but when I save and exit, I log back in and the profile does not seem like it has saved. Does anyone have any tips?

https://imgur.com/a/BD5VWoi

Thank you!

You are unlikely to get four modules to ever work at 3600MT/s on a Ryzen 2000 CPU, without manually tweaking the secondary and tertiary timings for an entire day or even longer. What is likely happening is you are setting the 3600MT/s XMP profile, but it fails and falls back to 2133MT/s when the system boots up and you run memtest86.


You should be able run four modules stable at 2933-3000MT/s with CL14, CL15 or CL16 timings and 1.35v. If your modules don't have XMP for lower than 3200, manually set your speed to 3000MT/s, 14-14-14-34 timings with secondary/tertiary timings on automatic and set 1.35v.

Run memtest86 after you confirm that it's running at 3000MT/s in bios or Windows using CPU-Z or HWInfo. A full 32GB four pass test will take 12+ hour to run fully depending on the memory speed. Reboot if you get errors at 3000MT/s and loosen the timings to 14-16-16-36 or lower the speed to 2933.


If you go through the process of tweaking the timings with DRAM Calculator for Ryzen, to run four modules at higher speeds, you might be able to reach 3200-3333MT/s if they are high quality like Samsung B die or Hynx A die. If you were running just 2x8GB, you should have no issue running 3200 and with tweaking you could probably reach 3466 stable. 3600MT/s or faster is possible on Ryzen 2000 CPUs, but really only by using high quality 2x4GB or 2x8GB kits and tweaking the timings to get it stable or just run a single module.


I'm willing to bet you wouldn't notice any real performance difference from 2933/3000 to 3600, unless you did some benchmarking of the games you play. Some games are affected by higher memory speeds, but you are only going to gain maybe 5-10fps between 2933 to 3600MT/s for most games. Some games run better in 4x4GB, 4x8GB or 2x16GB dual rank memory configurations on Ryzen 2000/3000 and it can sometimes negate the performance loss of running slower ram.