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Z690 BIOS 2602

Level 9

Hey there,

Is anyone tried new 2602 BIOS for Z690?

Any difference compared to 2204, 2305 or 2403?


Yeah In fact I used your previous post and updated everything in the right order and even reset bios to defaults first just to make sure nothing interfered so thanks for that. Doing all the updates went smoothly, and then after I tried CPU stress test, that was still fine, GPU was still fine but RAM started throwing errors.

True forgot that version is locked and yeah maybe one of the other previous versions would work out the box for the XMP but I am not messing about downgrading etc. haha Hopefully a newer version fixes it, or could make it worse haha God knows.

Memtest has been running now for 7 hours and is on pass 4, no errors yet. I noticed the memtest86 on the MOBO version is more recent with the bios update. I run the built-in version that's on the board to test ram as it's just handy. 

For some reason, it is now taking around 9 hours to do 4 passes of 64GB, 4 sticks.

Before it only took around 2.5 hours to do 4 passes. All I can think is the newer version of memtest86 is doing way more in-depth checks?....
The RAM is running slower but not sure if that has an impact and if it does I would not of thought it would make this big a difference.

FPS wise in games I have only seen a 3-10 fps difference in games so that doesn't really matter for gaming I don't think. Not when my system is hitting 120FPS at 4k max basically any game with Nvidia dlss on.

That's interesting, I had no idea that MemTest had changed. Yes, I think that if your RAM was 10% slower then MemTest would take 10% longer to complete, so I guess you're right, must be a program change. I'm always happy to run it for 30 minutes, so if you have 8 hours stable you have nothing to worry about! Nice one. There are other memory tests out there, but since it's so easy to run it from the BIOS, good enough for me 😀

Z690 Hero, 12900K, BIOS 3603, MEI 2407.6.1.0, ME Firmware, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

Level 11

Been using 2602 since last Thursday, and so far no problems.

Have a Good One! 😎

Level 8

Updated BIOS to 2602 last night and saw a 2% increase in a TimeSpy Extreme benchmark compared to my last run, before the update. Only change in the system configuration was 2602 update.



Level 9


First of all, your results are not optimal You are on 4000 MHZ
with high latency.
Your ambition is in gear 2 mode This is as high a frequency as possible.
to compensate .
My recommendation is to lower the frequency on gear 1 mode.
4000 on gear 1 It's really not easy to achieve on the Z690/790 .
It is very hard on the memory controller in the processor.
and requires a high VCCSA voltage.
Be careful.
always set the VCCSA voltage manually .
Once you put an XMP profile The board will apply voltage that can wear out the CPU controller.
Do not exceed the VCCSA voltage Max for 24/7 1.35V.
in brief Check what the highest frequency you can get out of the memories in gear 1 mode With VCCSA safe.
Samsung B-Die Excellent but you need experience to get the best out of them
Greetings David
asus prime z690 d4. i7 12700k. ASUS TUF OC 3080TI.

4000 / 4133 /4266 / 4300  are east in gear 1 mode on 690/790   i ha`ve both strix z690 and strix z790 both running  32gb dual rank 4300 cl 15 gear 1 and  4400 cl 16 gear 1   
g.skill royal 4000 cl 16-16-16-36 1.40v xmp kit dual rank
g.skill rgb 4400 cl 17 duasl rank kit 

4000 - 4133 cl 15 gear 1 is easy   4266- 4300 cl 15 gear 1 is a little binning needed  4400 cl 16   gear 1 was doable on 3 out of 10 chips all sp 120 and above ...

Rig # 1 - 14900Ks SP-124 | 90 MC @ 6.0 GHZ | 5.2 R | 4.7 E | DDR5 48GB @ 8,600 c36 | Strix RTX 4090 | PG27AQN 1440P 27" 360 Hz G-Sync ULMB 2

Rig # 2 - 14900Ks-SP-118 | 89 MC @ 5.9 GHZ | 5.2 R | 4.7 E | DDR4 32GB @ 4,533 c16 | Strix RTX 3080 | Aoc 1080P 25" 240 Hz G-Sync

Hello, thank you for your guidance. So, as I understand it, you are suggesting that I set the XMP profile to XMP I mode?

By default, my RAM takes a voltage of 1.40, and I haven't touched it.

FB_IMG_1689243556800.jpgFB_IMG_1689242822683.jpgFB_IMG_1689242830521.jpgFB_IMG_1689242839186.jpgFB_IMG_1689241792861.jpgFB_IMG_1689242886457.jpgFB_IMG_1689241843289.jpgFB_IMG_1689242899690.jpgFB_IMG_1689242409066.jpgFB_IMG_1689242949517.jpgFB_IMG_1689242461432.jpgFB_IMG_1689242749288.jpgFB_IMG_1689242796094.jpgFB_IMG_1689242805652.jpgFB_IMG_1689242812179.jpgFB_IMG_1689242817417.jpgIn the bios vccsa voltage max safe is 1.35v 

Ddr voltage is not a problem 1.5v is safe jast cool t8he ram with fan.

Vddq tx will halp in ram oc 

Start from 1.25v and test the oc for errors 

Ram oc its a game of balance 

The cpu killer is vccsa voltage never go abave 1.35v

24/7 1.3v 

Its very esay to kill intel cpu with high vccsa volt .

Never lets the bios to auto this voltag 

asus prime z690 d4. i7 12700k. ASUS TUF OC 3080TI.

Hello, I enabled the VMD feature, but it caused a significant delay in the boot screen before loading Windows. Do you have any solutions?

For the Asus Z690 A D4 motherboard, what RAM do you recommend that has a frequency of 4000MHz? I currently have G.Skill 32GB 4000MHz CL18 1.4V RAM, which I mentioned causes Blue Screen of Death or crashes when I enable XMP. I want to sell it and buy a different RAM. What do you suggest?

As I have already told you before
It is not easy to run 4000 speed on the 690
It depends more on the nature of your memories controller processor on the processor.
Especially if you don't know how to overclock memories which requires a lot of knowledge and time.
It's that the people write nonsense here that they run over 4000 easily.
It's more that fell on a good processor with a powerful controller.
It's really unwise to point out that they run over 4000 with a 12900KS processor
And make people with no memory overclocking experience think that they will just run XMP and everything will work.
Most likely you will be able to run 4000 but in exchange for that your processor will live for several months.
Because the easy way to make it happen is to raise the CPU VCCSA voltage
above 1.4 volts.
Most likely to be the 1.45 volt.
It's a way to kill your CPU quickly.
A few months and you will bury the processor.
I really do not recommend people without knowledge to purchase memories with high frequency.
Make memories
with XMP of 3600MHZ
with timing of
Any 12th generation processor will easily run this with XMP
Just be sure to lock the CPU VCCSA VOLTAG
To max 1.3 volts in bios
And that's

asus prime z690 d4. i7 12700k. ASUS TUF OC 3080TI.