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I have found some settings that are pretty stable on my rig.
Days of testing (memtest, ram test, cinebench, aida), gaming, programming with IDEs, code compiling.

Stable settings:
Z690 Extreme
4x16GB Samsung
4.8GHz C36,36,36,76
1.360V VDD/VDDQ/TX VDDQ
1.275V MC
1.150V SA

I can't crush my PC with that settings...

But I don't understand why these settings are so difficult to boot.
Once the PC is able to boot with these settings is super stable, I can reboot it without problems and live with these settings.
But as soon as I change something in BIOS, even to simply loose a timing from C36 to C40, the PC hangs on "DETECT MEMORY" error code 28.
After various try and retry, like setting C38, then C40, then C36, after a lot of try I can boot with the stable settings.

this does not happen if with the same settings, I select 5.0GHz and 5.2GHz.

5.0 and 5.2GHz are less stable than 4.8GHz during testing but much easyer to boot with.

How this is possible?
I'm not an expert but this seems something that should be fixed by Asus.

PS: Using 0070 and 9901 BIOS
Difference is whether memory is retrained or not. For dran related items it is retrained. For other it is not.
 

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Asus Maximus Z690 Extreme - Cpu 12900k SP99 - 32Gb G.Skill F5-6000U3636E16GX2-TZ5RK
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Difference is whether memory is retrained or not. For dran related items it is retrained. For other it is not.
Hi Mr. @shamino1978, I know that you work hard for us, and I have the maximum respect for you.

In the last month I have tested several bios for my Apex, and now the Samsung memory chips compatibility issue is solved.

Could you please tell me if on the official website of my board will be available a stable beta with all improvements of previous bios?

Thank you in advance

Your answer and opinion is important for me.
 

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anything new in line for the strix d4 board?
 

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testing the new Beta from the star of the community, Shamino, thanks again for the help and the answers.

I noticed that there is an interesting "new features" in the
TVB section -> Overclocking TVB
it's called. Boost Until Target.

I think that it's worth a try :)
 

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Last weekend I got the chance to try out both the z690 Hero and the z690 Apex, along with a 12900k and g skill ddr 5 6000mhz (F5-6000U3636E16GA2-TZ5RS)

Both worked fine when XMP loaded, with no other setting changed. So i moved on to overclocking the ddr5.

I started of with the Hero, i flashed the latest beta bios i could find, version 0070. The cpu ran at stock, and the g skill ddr5 at 6200mhz with the following settings:

Xmp1
ddr frequency 6200mhz
maximus tweak mode 2
34-36-36-55-2N
ref cyle time 700
dram refresh time 65535
sa 0.950000v
mc 1.31250v
vdd 1.42000v
vddq 1.42000v

With these settings the g skill F5-6000U3636E16GA2-TZ5RS ran fine. I did the bios memory test "memtest86", it passed. And i did the "karhusoftware" to 2000% without any errors, i also ran TM5-anta777 which it passed.

Then it was time for the Apex z690, everything els stayed the same execpt the motherboard it self, Cpu, ddr5, 3080ti, psu, mouse, keyboard, monitor.

I flashed the latest beta bios i could find, version 0080, then i again set the same settings as i found to be stable on the Hero.

This time however memtest86 failed in the first pass, karhusoftware gave errors under 100% and TM5-anta777 failed after somewhat 30sec.

I tried to bump up the vdd/vvdq up to 1.54000v, change sa between 0.85000v to 1.3000v, change ref cycle to 800 or / auto, change dram refresh time to 15000 or / auto.
Nothing helped, as soon as i changed it from 6000mhz to 6200mhz or let it run on 6000mhz and changed only the timings (34-36-36-55-2N) (with the same volt changes as worked on the hero) it would fail all the memory tests.

I tried bios 0811, 0911, 0046, 0072, 0080 but nothing worked. If the memory did not just run at xmp it would fail the tests.

After that i changed motherboard back to the Hero (bios 0070) and again there was no problems with the settings above.

Now i dont know if it happen to be a very good Hero, or if it happen to be a not very good version of the Apex, but for me, with these specific ddr5 the Hero was better then the Apex.
 

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Discussion Starter · #3,052 ·
Last weekend I got the chance to try out both the z690 Hero and the z690 Apex, along with a 12900k and g skill ddr 5 6000mhz (F5-6000U3636E16GA2-TZ5RS)

Both worked fine when XMP loaded, with no other setting changed. So i moved on to overclocking the ddr5.

I started of with the Hero, i flashed the latest beta bios i could find, version 0070. The cpu ran at stock, and the g skill ddr5 at 6200mhz with the following settings:

Xmp1
ddr frequency 6200mhz
maximus tweak mode 2
34-36-36-55-2N
ref cyle time 700
dram refresh time 65535
sa 0.950000v
mc 1.31250v
vdd 1.42000v
vddq 1.42000v

With these settings the g skill F5-6000U3636E16GA2-TZ5RS ran fine. I did the bios memory test "memtest86", it passed. And i did the "karhusoftware" to 2000% without any errors, i also ran TM5-anta777 which it passed.

Then it was time for the Apex z690, everything els stayed the same execpt the motherboard it self, Cpu, ddr5, 3080ti, psu, mouse, keyboard, monitor.

I flashed the latest beta bios i could find, version 0080, then i again set the same settings as i found to be stable on the Hero.

This time however memtest86 failed in the first pass, karhusoftware gave errors under 100% and TM5-anta777 failed after somewhat 30sec.

I tried to bump up the vdd/vvdq up to 1.54000v, change sa between 0.85000v to 1.3000v, change ref cycle to 800 or / auto, change dram refresh time to 15000 or / auto.
Nothing helped, as soon as i changed it from 6000mhz to 6200mhz or let it run on 6000mhz and changed only the timings (34-36-36-55-2N) (with the same volt changes as worked on the hero) it would fail all the memory tests.

I tried bios 0811, 0911, 0046, 0072, 0080 but nothing worked. If the memory did not just run at xmp it would fail the tests.

After that i changed motherboard back to the Hero (bios 0070) and again there was no problems with the settings above.

Now i dont know if it happen to be a very good Hero, or if it happen to be a not very good version of the Apex, but for me, with these specific ddr5 the Hero was better then the Apex.
set rtl 65|60|65|60
 

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Last weekend I got the chance to try out both the z690 Hero and the z690 Apex, along with a 12900k and g skill ddr 5 6000mhz (F5-6000U3636E16GA2-TZ5RS)

Both worked fine when XMP loaded, with no other setting changed. So i moved on to overclocking the ddr5.

I started of with the Hero, i flashed the latest beta bios i could find, version 0070. The cpu ran at stock, and the g skill ddr5 at 6200mhz with the following settings:

Xmp1
ddr frequency 6200mhz
maximus tweak mode 2
34-36-36-55-2N
ref cyle time 700
dram refresh time 65535
sa 0.950000v
mc 1.31250v
vdd 1.42000v
vddq 1.42000v

With these settings the g skill F5-6000U3636E16GA2-TZ5RS ran fine. I did the bios memory test "memtest86", it passed. And i did the "karhusoftware" to 2000% without any errors, i also ran TM5-anta777 which it passed.

Then it was time for the Apex z690, everything els stayed the same execpt the motherboard it self, Cpu, ddr5, 3080ti, psu, mouse, keyboard, monitor.

I flashed the latest beta bios i could find, version 0080, then i again set the same settings as i found to be stable on the Hero.

This time however memtest86 failed in the first pass, karhusoftware gave errors under 100% and TM5-anta777 failed after somewhat 30sec.

I tried to bump up the vdd/vvdq up to 1.54000v, change sa between 0.85000v to 1.3000v, change ref cycle to 800 or / auto, change dram refresh time to 15000 or / auto.
Nothing helped, as soon as i changed it from 6000mhz to 6200mhz or let it run on 6000mhz and changed only the timings (34-36-36-55-2N) (with the same volt changes as worked on the hero) it would fail all the memory tests.

I tried bios 0811, 0911, 0046, 0072, 0080 but nothing worked. If the memory did not just run at xmp it would fail the tests.

After that i changed motherboard back to the Hero (bios 0070) and again there was no problems with the settings above.

Now i dont know if it happen to be a very good Hero, or if it happen to be a not very good version of the Apex, but for me, with these specific ddr5 the Hero was better then the Apex.
It's very difficult to know if it's the bios or not.
I experienced very weird behaviour on this ddr5.

I can be stable for two entire days of testing, and crash the third day with the same bios and same settings.

I consider stable settings and bios that doesn't give me errors in an entire week of testing/using the PC. 😁
 

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Believe me, its the same with 4 DDR4 DIMMs. Everything runs fine on one day, karhu is stable for 2hrs+ and one restart later you can produce errors after 5 minutes. The training procedures seem to be unreliable.
 

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the boards that support sli finally with official sli key
(should be similar to what i posted just now)


These ones that dont support sli:
 

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Asus Maximus Z690 Extreme - Cpu 12900k SP99 - 32Gb G.Skill F5-6000U3636E16GX2-TZ5RK
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the boards that support sli finally with official sli key
(should be similar to what i posted just now)


These ones that dont support sli:
Sorry @shamino1978 and 0090 bios of this morning? I was setting the settings now and I find a new version after a few hours
 
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