Unable to get Ram to run at Expo

[ItzJay]

I just finished building my pc and am having weird memory related issues. I have a 7800x3D, Asus Strix B650E-E Gaming Wifi motherboard, and 2x16GB G.Skill Trident Z Neo 6000Mhz CL30 ram(Hynix M die). If I am booting the PC after leaving bios(when enabling Expo), the system starts up without issue and runs without a single crash or error report. I have stress tested the PC for almost a full day and a half using memtest, y cruncher, OCCT, Prime95, Aida64 and none of these tests report a problem or cause a crash/instability. However, when I have the computer shut off and try to power it on the next morning, when it gets to the start up/login screen it is extremely laggy and then the screen goes black, display says it lost signal and the system crashes. It only does this when using Expo, and I have tried, Expo 1, 2 and tweaked. All of them do the same thing. I've even tried running 6000Mhz at all Auto timings. I have tried bios version 1636 with AGESA 1.0.0.7b, version 1654 with version C, and the latest bios to no avail. The Ram is in the QVL and is an AMD Expo kit. Is this an issue with the CPUs memory controller, the motherboard, or is my ram just a faulty kit?

[Janekx]

Well the disable "memory context restore" and "memory power down" comes my pc working. The X670E-plus with actual FW and kingston KF556C36BBEK2-64 certified rams

only issue is loooooong DDR led orange on start about 15seconds but start up in 5600 and make 2 pass of win11 memtest without error. 

Why such long orange led? 

[damwookie]

The bios trains/tests the memory after each cold boot without memory context restore.  This causes the orange light pause. Memory context restore trains the memory less often and relies on previous results. This gives quicker boot times. Unfortunately there appear to be some bugs linked to memory context restore so it isn't completely stable for everyone. This may be down to RAM quality, tight timings, settings that are sticking when they shouldn't be (AI tweaker and advanced have duplicate settings. One should override the other but there is some evidence settings can stick and clash. That's possibly why I need to change both to get stability), memory context restore and memory power down appear to need to be the same or they cause memory bugs. If you need to rely on them being off for stability and get long boot times hibernation rather than off is a very quick option. 

[Janekx]

Thanks, seems there is many work need to be done on DDR5 platform, as issues are quite common and across many brands

[Silent_Scone]

To simplify something that isn't easily simplified, enabling this feature depends on the condition of the memory overclock at the point at which it's enabled. Once we enable Context Restore and the system retrains, those parameters are then locked in. If the overclock is unstable it should be fairly obvious why this is not ideal. It's important to mention that POST stress test stability and stability whilst the machine is within the operating system aren't one at the same.

In other words, use whichever method works best for stability, or dial out the POST instability by tuning the memory.

[DamWookie2]

Well that's a lot of word salad. In my case the 2 settings needed to be enabled or disabled under both the Asus and AMD settings. Unstable on cold boot if I didn't do this. Stable if I did. Settings on or off didn't affect stability. Having to use both menus did. 100% Asus bios bug instability. 0% RAM overclock instability. Not present for me in the current bios. 

[jarvis33]

Hello, what do you mean ? It works with the new BIOS and EXPO I profile ?? Thank you

[Silent_Scone]

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@DamWookie2 wrote:

Well that's a lot of word salad. In my case the 2 settings needed to be enabled or disabled under both the Asus and AMD settings. Unstable on cold boot if I didn't do this. Stable if I did. Settings on or off didn't affect 

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Unstable on cold boot if you didn't enable both, but stable if you did - setting on or off didn't affect stability?

Can you be more concise here. As it stands, your post doesn't make sense. 

When is the system "unstable"? More over, how do you categorise unstable.

[jarvis33]

It would be Nice to have an official answer from Asus as the product is sold with this issue.

[jarvis33]

I think the AM5 platform is not yet really reliable for EXPO profiles. I have chosen to not activate the EXPO profile until everything is safe. Could ASUS develop a new reliable BIOS for that and answer to our questions  ? Anything under development ?? 

[DamWookie2]

New bios out. Worth a try. I've not experience the bug I had on it yet but it's only been a few days.