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[STRIX X670E-F GAMING] BIOS 1415 high boot time with 4 banks of RAM (64GB)

Level 7
Good morning.
After a few months, also seeing the price drop, I wanted to add 2 banks of G.Skill Flare X5 32GB Kit DDR5-6000 CL32 memory (F5-6000J3238F16GX2-FX5) for a total of 64 GB total to my configuration.
I noticed an increase in boot time of about 50 seconds, with bios v1415 [latest stable version]
In the Bios setting, Memory Context Restore is set to "AUTO", if I set it to "Enabled" to gain boot speed, the system becomes unstable and causes me BLUE screens, this is with 4 banks of ram.
Previously with old v805 bios [no longer on file for vcore reasons] and 2 banks of RAM (32GB total) the system was stable and I had a boot time of 13 seconds with Memory Context Restore enabled.
Is there any setting to decrease the boot time or should I resign myself?

Level 8

If you have XMP turned on, then turn it off. XMP with DDR5 and 4 banks don't work, and when they boot, they tend to fail memtest86 and crash the OS.

Super Moderator

1. 6000MT with more than two modules is not possible on AM5

2. Mixing / combining memory kits is not supported or recommended by the memory or board vendor. Memory kits are binned in the density in which they are sold and once combined with other kits the settings in which are programmed on SPD are no longer valid. Stick to single kits.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Level 7

I carried out tests.
From frequency 4800MHz (AUTO) up to 5200MHz the boot times are 16-17 seconds, very good for 4 stiks of RAM.
From the frequency of 5400MHz up to 6000MHz (with Expo 1) I get times from 54 to 60 seconds.
I thought there was a more gradual variation from 5200 to 5400MHz.
The dilemma is whether to have 2 stiks (32GB tot.) @6000MHz with boot of13 sec. or 4 stiks (64Gb tot.) @5200MHz with 16 sec.
With 4 stiks of memory @6000MHz with shorter times I would not know what other Bios commands to act on.


Ridimensiona diMemory Frequency.jpgImmagine 2023-08-01 135547.png

I would try not to have such a preoccupation with POST times and use the amount of memory you require for the workload.

Enabled Memory Context Restore to bypass certain POST stress tests under specific conditions.  This will help reduce overall POST times.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

In other previous tests with 4 Stik, I had to set Context Restore >Auto, as it was on "Enabled" causing me instability problems.
It caused both OS and Bios crashes, where I could no longer act with the mouse, I had to act on the "Reset Cmos" and reset the setting.

That’s because the setting should only be enabled when the memory is stable. You likely aren’t, especially with combining kits.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090