DDR4 Corsair RGB CMR16GX4M2C3000C15W compatibility
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=11476
Printed Date: 18 Jul 2025 at 3:36pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: DDR4 Corsair RGB CMR16GX4M2C3000C15W compatibility
Posted By: Bred
Subject: DDR4 Corsair RGB CMR16GX4M2C3000C15W compatibility
Date Posted: 14 May 2019 at 9:44am
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Hello :) I Own this memory : 2x8Go DDR4 Corsair RGB 3000Mhz C15 https://www.ldlc.com/fiche/PB00235442.html On my first computer (Asus prime X370-pro + ryzen 5 1600) the mmemory works well (or near... 3000Mhz but automatically at CAS16, CAS15 don't works..) but on my second computer (asrock B450M Steel Legend + ryzen 3 1200) the memory won't go further than 2133mhz..  Do you think further bios releases could help solve the problem or maybe the new memory controller in the ryzen 3000 series could provide better compatibility for this memory ? Or should I just buy another certified memory for the asrock B450M ? Thank's |
Replies:
Posted By: bjlockie
Date Posted: 18 May 2019 at 10:45am
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I think it the CPU and the BIOS, Ryzen apparently might have problems with 3000MHz ram (it's very hit and miss). I think the Ryzen3 is older than the Ryzen5. I'm not convinced faster memory is worth it. ------------- ASRock B450M Pro4 16 GB DDR4, 500 watt PS, AMD Ryzen-5 5600, NVidia GTX-1050, 5.70 BIOS |
Posted By: Bred
Date Posted: 18 May 2019 at 11:28pm
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Hello :) Thank's for your answer. What did you mean by "it's very hit ans miss" ? On my side, I think it may be good to have not too slow memory frequency but I have not made many tests on my computer to compare cpu performance with high & low memory frequencies.. |
Posted By: bjlockie
Date Posted: 19 May 2019 at 12:56am
Sometimes they work when overclocked, sometimes they don't. You could try the other slots. A new BIOS might fix it. Are you using an XMP profile to set it to 3000MHz? You could try increasing the voltage to the RAM but check all the specifications first. See the Memory section of: https://www.asrock.com/MB/AMD/B450M%20Steel%20Legend/#Specification I think the Ryzen3 1200 is Summit Ridge (I hate code names). The charts don't seem to have overclocking. 2133MHz is the lowest. I would only think you would get that if you had 32GB. I would try the other slots and make sure it is using an XMP profile. https://www.corsair.com/eu/en/Categories/Products/Memory/VENGEANCE%C2%AE-RGB-16GB-%282-x-8GB%29-DDR4-DRAM-3000MHz-C15-Memory-Kit/p/CMR16GX4M2C3000C15#tab-tech-specs Fan Included No Memory Configuration Dual / Quad Channel Memory Series VENGEANCE RGB Memory Type DDR4 Memory Size 16GB Kit (2 x 8GB) Tested Latency 15-17-17-35 Tested Voltage 1.35V Tested Speed 3000MHz Memory Color BLACK LED Lighting RGB Single Zone / Multi-Zone Lighting Single Zone SPD Latency 15-15-15-36 SPD Speed 2133MHz SPD Voltage 1.2V Speed Rating PC4-24000 (3000MHz) Compatibility Intel 100 Series,Intel 200 Series,Intel 300 Series,AMD 300 Series, AMD 400 Series Heat Spreader Anodized Aluminum Package Memory Format DIMM Performance Profile XMP 2.0 Package Memory Pin 288 You should be able to see the voltage in the BIOS, 1.2 is the default. If it doesn't see XMP, you'll need to set everything manually. Increase the speed to 3000MHz and the voltage to 1.35 and 15-17-17-35 but XMP is easier. ------------- ASRock B450M Pro4 16 GB DDR4, 500 watt PS, AMD Ryzen-5 5600, NVidia GTX-1050, 5.70 BIOS |
Bred wrote:Posted By: xhue
Date Posted: 19 May 2019 at 2:32am
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BIOS releases most certainly can fix the memory speed, but: 1. Choosing a non-validated memory for a given mobo is at your OWN risk. No guarantees it will run at its advertised speed. Thas's why QVL exist. 2. Ryzen 3 1200 won't benefit much (if at all) from faster memory. I can't think of a reasonable workload for that particular CPU where memory could be a bottleneck. Ryzen 3 1200 will certainly love RAM with tigher timings, though. |
Posted By: bjlockie
Date Posted: 19 May 2019 at 2:45am
QVL in my experience never test a lot of the available RAM (which locally tend to be very limited choices). I have yet to buy any QVL RAM and I've never had a problem getting stated speeds. Maybe I've been lucky. ------------- ASRock B450M Pro4 16 GB DDR4, 500 watt PS, AMD Ryzen-5 5600, NVidia GTX-1050, 5.70 BIOS |
Posted By: xhue
Date Posted: 19 May 2019 at 3:24am
Good for you. However, this doesn't change a single word from what I said earlier. No manufacturer can test and validate all possible combinations between components, not on a sane budget anyway. That's the reason you see quite small QVL. You can either pick from QVL for maximum certainty; make an educated guess; or just roll the dice. Either choice comes with its consequences, no escape from causality. I always liked how a few people on some forum (or internet in general) make some statement and automatically make it the norm, i.e. I've been blindly picking RAM for my builds and never had an issue, so the same is valid for all. |
Posted By: Bred
Date Posted: 19 May 2019 at 4:31am
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Hello :) Originaly, I bought this corsair memory to work with my asus prime x370-pro (in the QVL) and after I tried to have them work on my new computer (asrock MB steel legend). None XMP or manual settings make them work at 3000Mhz, it seems to be locked in 2133mhz (but I just tried XMP and 3000mhz frequency maybe it could run at other frequencies..) Anyway, when I will buy a new ryzen 5 3xxx, I will see if there any improvements. In the meanwhle I bought a new kit, G.Skill Ripjaws 5 (F4-3200C16D-16GVKB) that doesn't figure in the asrock QVL, this time I roll the dice^^ Maybe it will perform better, the price was not expensive (87??for 2x8Go), if not I will keep it from another computer. https://www.alternate.fr/G-Skill/16-Go-DDR4-3200-Kit-M%C3%A9moire/html/product/1227030? I will try to think of updating this topic when I'll have the new ryzen cpu. |
Posted By: Bred
Date Posted: 20 May 2019 at 10:08am
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Good news here, It seems the last bios (2.10) solved my problem ! My corsair memory now runs at 3000Mhz on the asrock B450 steel legend. Like with my asus prime X370-pro, the CAS 15 doesn't work^^ it puts himslef at CAS 16.. (on XMP setting or manually adjdusted) |
Posted By: bjlockie
Date Posted: 21 May 2019 at 4:24am
Great. I think the 3000MHz is more important than the CAS. Is the XMP setting CAS 16? I think Corsair put the XMP in the RAM so maybe ask them. ------------- ASRock B450M Pro4 16 GB DDR4, 500 watt PS, AMD Ryzen-5 5600, NVidia GTX-1050, 5.70 BIOS |
Posted By: xhue
Date Posted: 21 May 2019 at 5:44am
In a typical daily jobs or games CAS (and thighter timings in general) help more, as the workloads are not bandwidth-limited. On the other side are highly-multithreaded apps (remember Ryzen's Infinity Fabric?) and scientific/multimedia/rendering apps. They need evey ounce of bandwidth, and benefit from the increased inter-CCX speed (which is linked with DRAM speed). |
Posted By: Bred
Date Posted: 21 May 2019 at 6:52am
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Hi, The XMP setting is 3000Mhz CAS 15^^ For now the CAS 15 dosen't work on my two AM4 motherboard but maybe the new ryzen cpu will help. Thank's your answers, finally a new bios fixed the problem^^. Topic can be close (don't know if I have to do it mylself^^) |
Posted By: Bred
Date Posted: 21 May 2019 at 6:56am
| And thank's xhue for your detailled explanations, always good to learn something^^ |