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Thoughts on Maximus z390 1401 Bios

LordSabathan
Level 9
Since i cant find the thread for bios update on z390(where ppl sharing thoughts on the bioses) and i see there is a new bios for Code ... i appriciate if someone share thoughts on this bios , since the last 2 or 3 versions where not very good.
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51 REPLIES 51

Enderwiggin03
Level 7
Everything works fine here on Z390-E with 1401.

so i tried it on Apex and noticed on 1302 MCE default was disable. Now 1401 is On. and they must do something with Vcore because before i must have negative offset 0.110 and LLC4 to get nice stock voltage. Now i have LLC2 and negativ offset -0.050. But still must change manualy VCCIO and SA because stock is still high and audio looks so far good no more cracking.

Well I got the same firmware on a Strix z390-F. And for me I got the same GPT boot error like in the previous firmware.

Working perfectly on Apex XI. I was even able to drop my CPU vcore from 1.310 to 1.300 9900K 5.1GHz.

Mappi75
Level 8
For me bios 1401 makes some trouble: my 32GB 4.266 CL17 Kit wont boot anymore.

It runs 2x into Code 55 (dectect memory) and then it will do it a third time and hang.

With the older bios the cpu 9900KS boots without problems - maybe i need much higher voltages now...

Its strange because with the old bios the system boots into windows 10 with extrem low voltages vccio & sa.
(but hci & karhu stable only with higher voltages).

System: 9900KS non-oc / G.Skill Trident Z RGB DIMM Kit 32GB, DDR4-4266, CL17-18-18-38 (F4-4266C17Q-32GTZR) / Asus Maximus XI Extreme

Edit:
going back to bios 1302 - loading xmp and set voltages manually:

vccio & sa: 1,2500v (also the boot voltages) and system works again.

Edit2: i test 1401 again -> before updating the bios > reset the bios > flashback 1401 > reset the bios.

I startet now with 4.000 Mhz and goes every little step higer to 4.200mhz (= system boots).
But 4.266Mhz will fail again.

With Bios 1302 it works out of the box @4.266mhz 17-17-17-37

sadly waiting so long for a new bios.. 😞

OldMike65
Level 8
Well after updating my Apex XI to 1401, I set it up for 5.0 then 5.2 with no issues for my 9900KS chip. Had my 9900KS running @5.2 at much lower volts then ever before. 100% stable. I ran 3 different bench marks. No crashes Windows 10 Pro ran fine.

Now for the bad part.
I could always oc this 9900KS to 5.3 and done it many times, could run @5.3 24/7 if I wanted, temps stayed fine. At idle would be between 29° and 36°
I like to complete in benching competition . No matter what I have tried I cannot run stable anymore @5.3 , I am able to boot to Windows 10 fine, but as soon as I run a bench mark it crashes I have tried using very high voltage levels, and manual or Offset modes. I prefer offset. Nothing works, I can no longer oc my 9900KS chip @5.3 anymore.

I will be going back to the 1302 bios most likely tomorrow, too bad because I liked this 1401 bios a lot.

Just my 2 cents on our new 1402 update.

OldMike65 wrote:
Well after updating my Apex XI to 1401, I set it up for 5.0 then 5.2 with no issues for my 9900KS chip. Had my 9900KS running @5.2 at much lower volts then ever before. 100% stable. I ran 3 different bench marks. No crashes Windows 10 Pro ran fine.

Now for the bad part.
I could always oc this 9900KS to 5.3 and done it many times, could run @5.3 24/7 if I wanted, temps stayed fine. At idle would be between 29° and 36°
I like to complete in benching competition . No matter what I have tried I cannot run stable anymore @5.3 , I am able to boot to Windows 10 fine, but as soon as I run a bench mark it crashes I have tried using very high voltage levels, and manual or Offset modes. I prefer offset. Nothing works, I can no longer oc my 9900KS chip @5.3 anymore.

I will be going back to the 1302 bios most likely tomorrow, too bad because I liked this 1401 bios a lot.

Just my 2 cents on our new 1402 update.


Did you forget to set Standby voltage (VCCST) manually to 1.08v so it's not 1.60v when you go past x52 multiplier, and CPU PLL OC Voltage (may be called PLL Bandwidth in your BIOS) so it's 1.20v and *NOT* 2.6v (not a typo). That had to be done on all previous bioses if they were set to "Auto."

Falkentyne wrote:
Did you forget to set Standby voltage (VCCST) manually to 1.08v so it's not 1.60v when you go past x52 multiplier, and CPU PLL OC Voltage (may be called PLL Bandwidth in your BIOS) so it's 1.20v and *NOT* 2.6v (not a typo). That had to be done on all previous bioses if they were set to "Auto."


Good questions, I will have to check, as I have tweaked many settings. I'm pretty sure that I didn't on 1302 thou....and I could run @5.3 with no problems.

Falkentyne wrote:
Did you forget to set Standby voltage (VCCST) manually to 1.08v so it's not 1.60v when you go past x52 multiplier, and CPU PLL OC Voltage (may be called PLL Bandwidth in your BIOS) so it's 1.20v and *NOT* 2.6v (not a typo). That had to be done on all previous bioses if they were set to "Auto."


Ok found those 2 settings, on the Standby voltage, only choices given are choosing 1 to 8 ....can't type in any voltage.
2nd ...changing Pll Bandwidth from auto to anything, makes even my solid 5.2 VERY unstable. BSOD's even locked up my bios screen a couple times.
I've NEVER seen my bios screen lockup. This is on the latest bios 1401 ...which I still think is buggy!!!!!!

Will be going back to 1302, which for me ran much better.