Z370 Professional I7 4266 RAM
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=8526
Printed Date: 18 Jul 2025 at 12:18pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z370 Professional I7 4266 RAM
Posted By: VaheArmen
Subject: Z370 Professional I7 4266 RAM
Date Posted: 27 Apr 2018 at 9:39am
So I have bought a Fatal1ty Z370 Professional Gaming i7 from
Newegg, and it seems that Dram A2 does not boot into proper speeds of
ram (4266). I have
G.SKILL TridentZ RGB Series F4-4266C19D-16GTZR
. I have tried both sticks on Dram A2 and they do not boot, I have also
tried both sticks on B2 and they boot into speed perfectly. The way I
configured the ram to boot into windows at those speeds is, I first put
Voltage in OC mode, then I went into Dram configuration and tweaked
timing with Dram tweaker, then I manually set Dram Frequency at 4266.
Doing these steps worked perfectly. Setting XMP profile would not Boot
into windows when I tried single stick on A2 or B2 Dram slots. That is
another problem I have been encountering that XMP would not boot into
windows and I have to do it manually. After heavy testing I know that
Dram A2 has a problem booting into high frequency.
So how is it that I stick 1 stick on B2 and it boots perfectly fine, but when I put 1 stick in A2 it does not boot into windows. I have tried both stick on A2 and B2, but XMP or manual input would not boot. maybe it has to do with Voltage, I have not messed with voltage so can someone please tell me their settings with this Motherboard and Ram sticks. Thanx
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Replies:
Posted By: VaheArmen
Date Posted: 27 Apr 2018 at 5:41pm
" rel="nofollow - Hey guys I got the ram to work. both sticks at 4267 with xmp on. I adjusted the VCCIO and VCCSA.
I was wondering is it okay if the VCCIO is at 1.320 and the VCCSA is at 1.200. are those okay voltages for the computer to be running around 8 hours a day?
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Posted By: VaheArmen
Date Posted: 27 Apr 2018 at 6:17pm
" rel="nofollow - i actually got VCCIO to 1.200 and VCCSA to 1.250 are these okay? seem to work fine under stress test with no crash or freezing
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Posted By: VaheArmen
Date Posted: 27 Apr 2018 at 7:54pm
" rel="nofollow - Sorry guys the system was actually unstable with those Voltages. This is a final update with running prime95 for a hour. Vccio i set to 1.350 and VCCSA is at 1.250 . XMP enabled 4266 Speeds :) let me know what you think about the voltages. are they safe? i mean the computer would not boot without these voltages.
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Posted By: Lou2k7
Date Posted: 01 Feb 2019 at 6:24am
Hi are your setting working?
Any more information you can give me? I got 2 kits of F4-4266C19D-16GTZA. i can get a combination of 2 to work at 4266 (if i use A2 and b2). If i use a1 and b1 only 2133, if i put in all 4, i only get 2133 also.
thanks for any suggestions
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