Overclocking RAM on MSI B350 Tomahawk

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Greasy Pommel

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I'm trying to run a 16GB module of G.Skill Ripjaws 3200Mhz RAM at 3200Mhz instead of the default 2133Mhz. I tried enabling XMP in the BIOS and nothing happened. Overclocking it manuall by setting the tCL to 16, tCRD to 18, tCWR to 18 (because I didn't know what to set this one to), and tRP to 18, and tRAS to 38, as well as DRAM voltage to 1.35V and the speed to 3200Mhz.

This just caused my PC to reboot during startup, so now I'm back where I started. Although the board spec sheet says that only supports 2667 Mhz RAM, there are numerous reports from individuals saying that they were able to achieve 3200 Mhz easily. What am I doing wrong, and what can I do to successfully overclock this RAM?


RAM: https://www.newegg.com/Product/Product.aspx?Item=N82E16820232090
Motherboard: https://www.newegg.com/Product/Product.aspx?Item=N82E16813144018
 
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elbert

elbert

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From what I understand it depends on the RAM. This is to say there isn't any absolutes due bioses are a long way from perfect at this point. I here that 2933 is the expected overclock on average. Try bit lower and give the motherboard makers a bit to fix RAM stability.
 
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Greasy Pommel

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Do you think my timings are correct, based on the RAM's XMP ? I'm not exactly sure what to set tCWR because it's not one of the four numbers that are provided. With the correct timings for 3200 Mhz, would it be okay to try them with lower clocks like you suggested or would that require different timing values?
 
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ShadyHamster

ShadyHamster

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Jan 3, 2012
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the 3200Mhz multiplier is extremely buggy at the moment, it either won't work or you will get worse performance because of the very loose sub timings that are set.

I would leave the timings on auto and set 2933Mhz and then see what timings are automatically assigned, if they higher then the rated timings for that kit then there shouldn't be any issues lowering them to the rated timings.
 
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Greasy Pommel

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The BIOS doesn't show how the timings change (if they are changing at all). I tried setting the frequency to 2667 Mhz with 1.35V and auto timings. Still wasn't able to POST.
 
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winrazor

winrazor

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My CMK16GX4M2B3200C16 currently works at 3000 with bios v1.3
But 3200 is still a dream :)
 
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J

Jaybles222

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I have exactly the same RAM as you with a Ryzen 5 1600 but I'm stuck with the default 2133mhz :/
What are your settings to enable 3000mhz ? Thank you
 
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winrazor

winrazor

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Update to 1.3 and load defaults. Menu "Try It". Select second one from two 3000 configs. (with higher timings)

 
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Greasy Pommel

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I heard something about better results in BIOS update 1.3 as well. I'm going to try running memory at higher speeds on it and see how it goes. I've already gotten stuck in reboot loops in the past so I learned how to reset the CMOS. Thank you for your concern.
 
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Greasy Pommel

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Can you let me know if anything works for you? My RAM model is F4-3200C16S-16GVK. If you have the same one, maybe we can figure out something together.
 
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Jaybles222

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With the settings from winazor (see above), I can OC my ram at 2933Mhz :)
3200Mhz is still impossible for me.
 
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Greasy Pommel

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I tried 2400, 2666 and 2933 but none of them worked, memory try it profiles included. What RAM model do you have?
 
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winrazor

winrazor

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I also learned, before understanding that I have to be patient :)
Let it to loop few times and it enters with 2100 automatically, so no need to uninstall graphics card :)
 
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winrazor

winrazor

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Hi all, let's wait until the next release of chipset driver and bios from AMD and in few days from MSI, in May.
So currently we have a bad memory support and not adequate Balanced profile in Win10.
By the way, Ryzen profile from AMD does the same as Performance one - disables auto-boost to 3900 and sets all cores to 3500 forewer. (1700X)
So I still prefer to use defective original Balanced profile, seems like it boosts when it wants, and not when it is needed, hope next chipset driver should fix it.
Also I've increased a little the cpu fan speed in the auto-tuning grid, in the bios, it makes auto-boost more effective. Recommend it if you have an air-cooler. With liquid cooler you can just set all cores to 3900 in the bios, and leave the rest of settings on auto. With air-cooler it also work but I don't recommend it for long-time use because it is too hot. So for overclocking this board is super. (auto settings of voltage work fine)
My memory at 3000 sometimes starts from 2 or 3 attempts, I just wait a little bit more. With 2600 it always starts from the first attempt. So if you cannot wait extra ~10 sec on the PC start - set 2600.
 
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Greasy Pommel

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Maybe I just got a bad CPU but my R7 1700 needs a small voltage increase to 1.2375 from auto to make it stable at 3.7 Ghz. Make sure your overclock is stable.
 
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winrazor

winrazor

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Apr 13, 2017
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Maybe MSI did not check overclocking cases with 1700, or it is dangerous to increase voltage with 1700 and they took it in account. I don't use overclock all the time because a 2 reasons: it disables auto-boost and my Arctic Freezer 13 is not powerful enough for overclocking of this CPU. But after playing few battles in WoWs in 4k system did not crash on 3900 but was very hot, and during all my experiments it did not crash. In comparing with my old 1055T on Asus (with the same cooler) it simply super. This is my first board from MSI, so only in few years we'll see if it is good or not.
 
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Jaybles222

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Finally I can enable the A-XMP profile 2 (2933Mhz), it works very well and I don't have to use the Memory Try It! :)
Still get an error with the profile 1 (3200Mhz, and it will be still the case probably until May.
 
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winrazor

winrazor

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But what is the difference between A-XMP profile 2 (2933Mhz) and Try It (2933Mhz) ?
Does your A-XMP profile 2 (2933Mhz) start the PC (post) from the first time or after 2 or 3 attempts? How long startup takes?
(if I remember correctly, I tried it also and it was unstable, not always my PC could start)
 
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Jaybles222

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Apr 14, 2017
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I don't know exactly what's the difference but I think A-XMP (AMD version of XMP) is the official and secured way to OC the RAM (source : http://www.fudzilla.com/news/motherboards/43171-msi-announces-a-xmp-technology-for-amd-ryzen).
First attempt and everything was okay, the POST time is almost the same but Windows 10 starts really quickly, no more long loading screen :)
 
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winrazor

winrazor

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Apr 13, 2017
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Thank you, I'll try it again, maybe it depends on the CPU model.

Yes, seems like it works, at least after 2 restarts ;)
 
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