Need help with OC'ing memory with AMD Ryzen, windows 10 crashes

the_tobzster · 2 Apr 2018 at 12:52

Hi guys,

So I completed my latest build about 3/4 months ago. Upgraded to a Ryzen 5 1600, b350 gigabyte gaming mobo(latest bios), Gtx 1070 and Corsair Vengeance LPX 3000mhz ram (more specifically CMK8GX4M2B3000C15). I have left my CPU unoverclocked since everytime I do it I run into issues and quite frankly don't have the time to play about with getting it right. I find the stock speeds with turbo boost are fine for the meantime.

What I want to know is, I was told with Ryzen that faster ram speeds are a must? I overclocked my RAM from default 2133 to 2933, changing the multiplier and timings of the ram to 16,18,18,18,38 as a friend suggested these timings since he has a similar build. However I often get BSOD crashes, something to do with windows 10 'Memory_management', I want to know if this has something to do with my overclocked ram? Perhaps the timings are wrong? Also do I need to change the ram voltage? Sorry I am very new to overclocking, despite being able to build a pc from scratch.

I have since changed the ram overclock from 2933 to 3000 mhz to see if that makes any difference. I am just confused as to why it's doing this.

Any help or pointers would be much appreciated!

tamzzy · 2 Apr 2018 at 18:07

easiest would be to enable XMP in bios and dont mess around with the memory timings

DarkHorizon472 · 2 Apr 2018 at 18:30

Corsair lpx memory is normally Hynix based which is poor for overclocking with a Ryzen.

To give you my experience I had lpx 3200c16 ram, it’s max stable speed for 2 x 8 GB was 2933c16. No settings made any difference to this.

Then I replaced it with the 3200 8 pack Samsung Bdie based ram , 3200c14. This was fine at 3333c14 or 3466c15 for 2 x 8gb with vcore 1.2, ram at 1.4 and soc at 1.13.

I have since added another 2 x 8gb to make a total of 32gb. This runs at 3200c14 but needed vcore increased to 1.25 to be stable.

Hopefully that helps a bit , the results vary by cpu, memory and motherboard.

ketma · 2 Apr 2018 at 21:51

Interesting you are setting 5 values in the BIOS for the RAM timings - is one of these labelled as tRCDWR ?, although I have a TR system, I encountered odd behavior with setting a manual timing on this setting as this is a write value and the RAM timings do not list this in their timing specs, usually only CL, tRCD, tRP and tRAS as listed.

Try leaving that particular setting (tRCDWR) on Auto along with tRC too - see if that helps, incidentally XMP does not work on my system either, but setting the values manually its rock solid @3200MHz (I have a Gigabyte board too).

the_tobzster · 3 Apr 2018 at 18:51

tamzzy said:
easiest would be to enable XMP in bios and dont mess around with the memory timings

I tried enabling XMP before but ran into multiple problems, seemed pretty unstable. Apparently XMP is an intel thing and not really reliable on AMD builds?

DarkHorizon472 said:
Corsair lpx memory is normally Hynix based which is poor for overclocking with a Ryzen.

To give you my experience I had lpx 3200c16 ram, it’s max stable speed for 2 x 8 GB was 2933c16. No settings made any difference to this.

Then I replaced it with the 3200 8 pack Samsung Bdie based ram , 3200c14. This was fine at 3333c14 or 3466c15 for 2 x 8gb with vcore 1.2, ram at 1.4 and soc at 1.13.

I have since added another 2 x 8gb to make a total of 32gb. This runs at 3200c14 but needed vcore increased to 1.25 to be stable.

Hopefully that helps a bit , the results vary by cpu, memory and motherboard.

Thanks for the info man. That's interesting to hear. I did read something about Bdie ram being better and more optimized for Ryzen but as I made my build I checked with the compatible ram types for Ryzen (on their website) and the Corsair Vengeance ram I have right now is listed there as compatible. Whether it's just not referring to overclock success rate I don't know, but I'd rather not have to buy more ram right now since the prices are absolutely crazy!

the_tobzster · 3 Apr 2018 at 18:53

ketma said:
Interesting you are setting 5 values in the BIOS for the RAM timings - is one of these labelled as tRCDWR ?, although I have a TR system, I encountered odd behavior with setting a manual timing on this setting as this is a write value and the RAM timings do not list this in their timing specs, usually only CL, tRCD, tRP and tRAS as listed.

Try leaving that particular setting (tRCDWR) on Auto along with tRC too - see if that helps, incidentally XMP does not work on my system either, but setting the values manually its rock solid @3200MHz (I have a Gigabyte board too).

Interesting to read that mate, I'll have to have a play about with it and see if it makes a difference! I didn't even think about that since you can manually input all the timings (which is pretty overwhelming for me enough as it is haha). As of right now, I've clocked it @3000mhz with my original timings and haven't had any crashes since. I don't see how it would be more stable on 3000mhz instead of 2933 but we'll have to see. I have noticed however, that during a gaming session last night though that all my games randomly crashed at least once, don't know if that's anything to do with the ram but I'd rather that than BSODs.

DarkHorizon472 · 3 Apr 2018 at 18:53

I did the same thing buying the LPX 3200c16due to it being on the recommended compatible list for 3200. Some times you can't win !

Ad_Augendae · 4 Apr 2018 at 10:01

I'm building Two Ryzen 1800X machines with the 8 pack Dark Pro 3200 Ram, and so far I've not had any trouble with them, just set it and forget it XMP.
I did research a lot about ram (late to the table though) and I've seen a lot of people not happy with several kits of ram over the last 12 months or so with Ryzen systems. I feel so bad for people falling into the ram trap, this is why I am here to try steer people in the right direction.

Also done many hours of testing with overclocking on these two AX370 Gigabyte K7 boards, I know it sounds cheesy but at this moment in time I'm using no offset on the Vcore 1.33750 and VCORE Soc 1.00625 VDD18 Auto VDDP +0.120 ram 1.350 with 0.675 offset LLC High/High.
I hope they last at least a few years, but I guess only time will tell.

Guys this is just my experience and I don't recommend you use my them (the settings), this is just what works for me on these boards.

the_tobzster · 5 Apr 2018 at 23:13

ketma said:
Interesting you are setting 5 values in the BIOS for the RAM timings - is one of these labelled as tRCDWR ?, although I have a TR system, I encountered odd behavior with setting a manual timing on this setting as this is a write value and the RAM timings do not list this in their timing specs, usually only CL, tRCD, tRP and tRAS as listed.

Try leaving that particular setting (tRCDWR) on Auto along with tRC too - see if that helps, incidentally XMP does not work on my system either, but setting the values manually its rock solid @3200MHz (I have a Gigabyte board too).

Thanks for the tip man! I changed the tRCDWR settings to auto and since then I've had hardly any problems! Maybe once or twice but considerably better, your tip was invaluable so I thank you for that. I'm also curious as I upped the frequency of the ram to 3000mhz (from 2933) and it because much less stable, my games felt like they were dropping frames and felt laggy even on high fps (I have a 144hz screen) such as 70 - 80+. I changed it back down to 2933 and since then it's as smooth as butter, maybe too much of an overclock? Would it really have such an impact in games?