Befuddling DDR4 Behavior X370 Gaming K4 & Pro
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=4642
Printed Date: 22 Dec 2024 at 2:45pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Befuddling DDR4 Behavior X370 Gaming K4 & Pro
Posted By: KBS756
Subject: Befuddling DDR4 Behavior X370 Gaming K4 & Pro
Date Posted: 18 Mar 2017 at 12:07pm
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Just wanted to post about some odd behavior I noticed with these motherboards, and before anyone jumps on me for it I am aware there is currently an issue with supporting DDR4 at higher frequencies with the Ryzen Platform. So the issue I am having that thoroughly confuses me is that the first Pro board I had was able to get EVGA 3200 RAM up near the 3000 equiv without crashing (crashed while running at 3200) and was able to get Corsair LED Vengance 3200 RAM up at full speed by default without XMP. But when I had to change that board out because of some odd behavior which Asrock customer Service told me to return and exchange for, the next board of the same type did not read the very same sticks faster than 2133... The issue that prompted me to exchange the Asrock Pro Gaming Board at Microcenter was that everything was fine till it went to sleep but when it went to sleep and woke up again Debug Doctor was frozen at FF and wouldn't drop it till restart. Anyway, now when using my exchanged Asrock X370 Gaming Professional Board, and a X370 Gaming K4 I bought for another build none of the previous RAM Modules or the new 16GB 2 x 8 GB RGB Trident Z C14 3200 Mhz kit I got will run at anything above 2133. Instead whenever set above this speed with Any method of increasing speed on the new Bios update I get failure to boot (post) at the ram phase 4 restarts and the bios reverted to previous settings. Ram Used EVGA 16GB 2 x 8 GB DDR4-3200 PC4-25600 CL16 Kit CAS 16 Timings 16-18-18-38 Corsair Vengeance Series 16 GB 2 x 8 GB DDR4-3000 PC4-2400 Kit CAS 15 Timings 15-17-17-35 Corsair Vengeance LED 16GB 2 x 8 GB DDR4-3200 PC4-25600 C16 _ Cas 16 Timings 16-18-18-36 G Skill TridentZ RGB 16GB 2 x 8 GB DDR4-3200 PC4-25600 Cas 14 Timings 14-14-14-34 All of these come up with a speed of 2133 despite XMP showing their correct timings voltage and speed, and despite the Corsair Vengeance LED and EVGA ones having run at a higher frequency on my previous board. Mostly I'm just wondering how RAM that worked on the same board doesn't work on a different model of the same board ... Also hoping that Bios updates will soon be able to fix this problem Can someone confirm for me that should be the case eventually. Thanks |
Replies:
Posted By: wardog
Date Posted: 18 Mar 2017 at 4:22pm
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" rel="nofollow - As fast as BIOSes are being released to improve DRAM Compatibility I'm left wondering if this is/was BIOS related. Any chance you remember what BIOS revisions were flashed to these boards? |
Posted By: KBS756
Date Posted: 18 Mar 2017 at 9:47pm
| All 3 boards were/are running the latest bios version out now |
Posted By: KBS756
Date Posted: 19 Mar 2017 at 7:56am
| And now suddenly ram that was running fine as dual channel is running only as single channel |
Posted By: wardog
Date Posted: 19 Mar 2017 at 8:03am
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Re-seat your memory in the slots until you hear 2 clicks, ensuring it is fully seated. |
Posted By: KBS756
Date Posted: 19 Mar 2017 at 8:20am
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Thanks ... tried that already knew to ... found out 1 of those 2 seems to have gone bad on me just being in there ... put the LED Corsairs back in ... and found out I can get it to at least get close to where its rated by 1. Set the XMP Profile (which says 3200MHz) 2. Leave everything the same except the frequency 3. Drop the Frequency to 2933MHz .. Got a boot and dual channel mode and 2966MHz Frequency ... Guess I'm returning the RGB LED Tridents to Newegg |
Posted By: jerflash
Date Posted: 20 Mar 2017 at 8:01am
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" rel="nofollow - I always run ASRock Boards but i was unable to grab one at the time of release. I have been running a MSI B350 Tomahawk That i am now able to get my Corsair LPX 3200 to run at 3200. I was able to grabe an asrock x370 gaming k4 from newegg yesterday which i want to swap it out for but notic its only able to go up to 2933 according to there documentation. this is crazy to me since the asrock ab350 gaming k4 is listed to be able to do 3200 memory speed... what is going on here asrock? Do i just need to wait for bios updates? this new chipset seems like a crapshoot with any combo currently
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Posted By: wardog
Date Posted: 20 Mar 2017 at 8:55am
Nope. Don't change the frequency. Using XMP on any board, simply set/choose the XMP Profile you want if there's two choices, then straight to Save and Exit |
KBS756 wrote:Posted By: wardog
Date Posted: 20 Mar 2017 at 8:55am
Answered in your Thread |
Posted By: KBS756
Date Posted: 20 Mar 2017 at 10:31am
If I leave it on default XMP without changing the frequency down a step i get several failures to post followed by a boot with default bios settings used won't run at 3200 ...
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