B450M Pro4 and MEMORY HX430C15PB3K2
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=10193
Printed Date: 13 Sep 2025 at 4:24am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: B450M Pro4 and MEMORY HX430C15PB3K2
Posted By: ASRock-Sakis
Subject: B450M Pro4 and MEMORY HX430C15PB3K2
Date Posted: 16 Nov 2018 at 10:57pm
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Dear Sir/madam hello. I have build it my PC a few days ago. The system is stable and performs as expected except a strange behaviour when I enable XMP profile 1 (3000Mhz CL15-17-17-36). The motherboard loads it successfully but fails to set correct the CAS Latency (CL) 15T ! ? It's auto set to CL16T . - Let me explain better. The RAM I use, is in the list of supported memory (QVL) The ram XMP Profile 1 sets timings at CL15-17-17-36.(as advertised by Kingstone HyperX Predator HX430C15PB3K2) I used CPU-Z HWiNFO64 and AIDA64 to confirm my findings. I have reset it the bios many times. I removed the battery and power cable, I put jumper on Clear_CMOS pins for 15min. I updated to the latest bios V1.60. I removed all devices cables and memory sticks. I reset Bios, Load Defaults etc...... No success, it always loads at CL16.@ XMP Profile 1 Then I tried to set manually the basic memory timings. Firstly I tried to set the memory at CL15-16-16-36 , system booted successfully but the CAS Latency remained (CL) 16T. CPU-Z,AIDA64 reported CL16-16-16-36. Then I tried to set the memory at CL17-17-17-36, system booted successfully and the CAS Latency changed to (CL) 17T. CPU-Z,AIDA64 reported CL17-17-17-36. Finally I tried to set the memory at CL14-16-16-36, system booted successfully and the CAS Latency changed to (CL) 14T. CPU-Z,AIDA64 reported CL14-16-16-36. Can someone validate my findings? Is this a bios bug or an incompatibility issue ? Also i must mention my issue with the "Arctic Freezer 33 plus" CPU cooler. The fan doesn't start to spin before PWM is at 55-59% at CPU_FAN1 header. When I put the fan to header CPU_FAN2 It starts to spin at PWM 10% ? Is this a bug or a faulty header ? |
Replies:
Posted By: kerberos_20
Date Posted: 17 Nov 2018 at 3:34pm
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u should disable geardown for cl15 ------------- http://valid.x86.fr/diq4l4" rel="nofollow">  http://www.userbenchmark.com/UserRun/47132492" rel="nofollow - userbenchmark |