Intel Motherboards - Z270 Taichi Same memory, but different size

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Z270 Taichi Same memory, but different size

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=8564
Printed Date: 13 Nov 2025 at 7:22am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Z270 Taichi Same memory, but different size

Posted By: chong67
Subject: Z270 Taichi Same memory, but different size
Date Posted: 01 May 2018 at 12:08am

" rel="nofollow - I have the Z270 Taichi motherboard.

I have 4 banks of memory, same specs and same company.

One is a pair of 16 gb.

The other is a pair of 32 gb.

The manual say same size, same memory ...

Mine is same pair, but in pair of difference size.

is this OK?

Replies:

Posted By: VaheArmen
Date Posted: 01 May 2018 at 4:35am

ya should be. as long as the memory is listed in your memory QVL. you should be good. you will get 48GB

Posted By: chong67
Date Posted: 01 May 2018 at 4:56am

" rel="nofollow - It did not do it for me.

First time I see it never boot up. It keep recycling.

Reseat the 2nd time and it will only boot for 2 sec and shut off.

I wonder what is going on.

Replace with new memory and they are good just like the old ones.

I wonder what is going on. Any ideas?

I even did a clear CMOS.

Posted By: badbri
Date Posted: 01 May 2018 at 10:47am

" rel="nofollow - What make and model ram is it AND what CPU are you using ?

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https://www.passmark.com/baselines/V9/display.php?id=99573335296

Posted By: chong67
Date Posted: 01 May 2018 at 10:58am

The RAM is approve on the ASRock list.

G.Skill Trident Z on i7 8770K.

Posted By: chong67
Date Posted: 01 May 2018 at 11:00am

F4-3000C15D-16GTZ and F4-3000C15D-32GTZ

Posted By: badbri
Date Posted: 01 May 2018 at 11:21am

" rel="nofollow - What mother board ? You stated a z270. The 8000 series cpu will not run on a 200 series motherboard. It has to have a 300 series board.

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https://www.passmark.com/baselines/V9/display.php?id=99573335296

Posted By: VaheArmen
Date Posted: 01 May 2018 at 11:47am

first of all its a 3000mhz so inorder for the board to even boot that you need to up the VCCIO and VCCSA voltages. Asrock has weird bios too. first enable xmp and above enabling xmp there is something called Dram Tweaker. click on Dram tweaker and it will bring you a list, and on the top side you should see XMP 3000 click on that and it will bring red dots on all the speeds, then click okay. when you do this your XMP Dram frequency might reset so manualy set the Dram frequency back to 3000. then you need to go into Voltage config. make sure your Dram Voltage is at 1.35V if it says Auto and on the left of Auto it says 1.35V go ahead and type in 1.35 in the box. Then look at VCCIO voltage. VCCIO voltage should be at 0.950. for that 3000mhz speed i would first try 1.10V for VCCIO. then look at VCCSA. VCCSA should be at like 1.150 i believe by default. Leave VCCSA alone for now. Now save changes and try booting up. Make sure your boot order is correct too. If it boots up know that its a voltage thing you need to figure out. If it does boot, Download Prime95 and run a Blend test for about 20 mins. see if any of the workers stop working while the test is going. If you see none of the workers stop then you are good. If you do see it stop then know you have to up the VCCIO voltage a little. maybe to 1.20V

If you see your computer not booting up after changing the VCCIO to 1.10V then go ahead and go into bios again and take it to 1.20V. ( After changing to VCCIO to 1.10V and it still does not boot up, you might go into bios again and see your ram speeds are at 3000 and it did not go back down to 2133, that is a good sign that means you just need a little more voltage for stability.

Take VCCIO up first before touching VCCSA. you might not even have to jump from 1.10 to 1.20 you can do 1.15 if it does not boot.

you should be able to boot at 1.10 tho.

Posted By: VaheArmen
Date Posted: 01 May 2018 at 11:49am

sorry VCCSA might be 1.05V so don't touch it. But it is more then safe to bring it up to 1.15 if you see setting high VCCIO does not work.

Take a picture of my the post and go into your bios and read post again.