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[muziqaz]

ASUS is not an authority to tell you that a bundle of your selected hardware will 100% be stable. ASUS does not control RAM manufacturing process, it does not control CPU manufacturing process, heck, I can argue they have no clue how to do motherboards anymore. Saying that, I myself did check Asrock QVLs before buying both Zen 5 systems, there is nothing wrong in doing that.

What ASUS is stating in their QVLs that their particular RAM sticks worked with their particular CPU on one particular motherboard, at that given moment, which was in a lab with god knows what type of validation and stress testing.
Now saying that, the biggest influencer of your issue probably is a CPU, since nearly all of them require extraordinary user effort to make 6400 and 6200MTs stable. Instead 6000MT/s is simply plug and play. Set expo to 6000 profile (if available), and enjoy your system. If 6000 profile does not exist, set it to 6400 profile or 6200 profile, and then manually adjust RAM speeds.

[nada391]

have set the BIOS to manual DDR5-6000 , just this one setting, but don't know if this is already "EXPO" setting (there just graduations from like 3200 upwards selectable).

i am no expert whatsoever, and even less of an engineer, but have been eyeing the mobo market quiote nearly certainly since rzyen 7000 launch, and since had already appointment with ryzen 7 7700 (not fulfilled9)
just chose the MoBo with best price&functionality for my needs (important criteria no WiFi, no Inte l Eternet, some sata for bluray etc., preferably was X670(e) or X870)
now since most X870 came with less sata than at first glance acceptable, stuck with the favorite from last round, but probably in memory compatibility terms it was not such a bargain, would have been better off with X870 /(since learned since that the WiFi could also be removed with not such big hassle)

did not mind lack of usb4 since chose a card with Thuderbolt header;

but today there was a news release that made me look interested in maybe switchting MoBo on next or Zen 7 releaase (if still for AM5)

goes like "1 DIMM per channel design" but actually don't know what this should actually mean in reality, but should help with memory stability i guess (one could always get 2x64 or 2x128 memory stick i guess nowadays).

was looking also at threadripper motherboard, but they also look as they could offer more for the pricetag.

EDIT: run the geekbench6 --compute benchmark with the new memory setting, and it turned out actually lower, but that could be for a variety of reasons

[muziqaz]

1DIMM per channel was always the case. That's why you have dual channel with 2 DIMMs

[nada391]

what actually got me more interested is the ps/2 port next to all those modern ones, and the name universeoriental energy. flow.

but sadly there are many less peripheral with real ps/2 on the market todauy, would really enjoy good trackball mouse/
ps/2 seem more stable than usb/ but then again, and engineer would/should k-now better.