Intel Motherboards - Asrock Z170M Extreme4 and Patriot Viper 4 3200Mhz

Asrock Z170M Extreme4 and Patriot Viper 4 3200Mhz

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=7625
Printed Date: 03 Aug 2025 at 12:33pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Asrock Z170M Extreme4 and Patriot Viper 4 3200Mhz

Posted By: chrisk2305
Subject: Asrock Z170M Extreme4 and Patriot Viper 4 3200Mhz
Date Posted: 10 Feb 2018 at 12:30am

" rel="nofollow - Hi Guys,

I have a Asrock Z170M Extreme4 Board and a Patriot Viper 4 3200Mhz 2x8GB Dimm Kit. No matter what I try 3200Mhz won't run. PC won't even boot with XMP Profile selected. The furthest I can get is 2400Mhz. I also raised VCSSA to 1.2V, but that didn't help either. I ran memtest86+ for a couple of hours and it passed fine. I am using the latest beta bios (7.21). 7.20 didn't work either. I also set voltage for ram manually to 1.35v. I worked with a lot of Skylake Systems und never had issues running DDR4 at 3200Mhz.

Specs:

Asrock Z170M Extreme4

Intel Core i7 6700k (no oc yet)

2x8GB Patriot Viper 4 3200Mhz

BeQuiet Straight Power 10 500W

Samsung SSD 850 Evo 250GB

Running prime95 atm with 2400Mhz and no error so far. What can I do to get those 3200Mhz working? I also tried booting with 2800mhz which didn't work as well.

Thanks in advance!

Chris

Replies:

Posted By: chrisk2305
Date Posted: 13 Feb 2018 at 2:43pm

Posted By: Archeron
Date Posted: 21 Feb 2018 at 10:06am

Hi Chris,

I use the same Board, but with 2x8GB Corsair Vengeance 3200MHz.
XMP Profile: 16-18-18-36, 1.35v
At first i had exactly the same problem, rising voltage on VCSSA didn't work.
Later i activated XMP and manually changed the timings to 16-19-19-36.
Now my system runs stable with RAM at 3200MHz.

Maybe it won't work with Patriot RAM (16-16-16-36), but you could try to set the timings to 16-18-18-36.
Patriot's website has a pdf with the specs for your RAM and they wrote, they tested Viper4 3200 with these timings.

Archeron