Overclocking Ryzen, Ram problems

lenqq

Prominent
Dec 4, 2017
12
0
520
Gigabyte b350 Gaming 3, rev 1.0
Corsair CMK8GX4M2B3200C16R Vengeance LPX 8 GB (2x4 GB) DDR4 3200 MHz
Amd Ryzen 1600X
Noctua D15 AM4 Edition

Best overclocked I've reached so far is 4.0Ghz Stable, 1.38-1.392V, Soc 1.1V - 71C

the ram I used the XMP profile an got constant BSOD,

even with manually entering timings, what's strange is the ram chip displays 4 series of numbers, 16, 18, 18, 36 1.35V, instead of 5 series of numbers so my question is why? since you have to enter 5 series of numbers to overclock the ram

the only stable ram setup I got was 2866Mhz, manually entering timings for 3200Mhz an voltage - anyone with similar hardware having same problem or have a soloution?


I used Prime95 Blended tests 3 Hours, small FFT 4 hours, No proper memtest atm, but seems stable. I have latest BIOS version F20C an drivers installed along with a fresh install of windows
 
Solution
good stuff :) getting there. good results. close this thread off, it's getting a bit long now. Let me know by PM how you get on, and if you need any info i can help with.
I have similar RAM rated 3000MHz on an asrock AB350 pro 4 board that I can run 2800 max 2933 is stable but after a few reboots the bios will reset. Your RAM like most is optimised for the Intel memory controller so its unlikely you will get its full rated speed.
 
yeah, I'd agree with Simon a little. The ram isn't on the QVL for the mobo, meaning there's no guarantee it will work at it's rated speed. Apart from trying to set XMP profiles or manually setting timings as you've done, if it doesn't go higher that 2866mhz there's very little you can do. You can up the voltage a notch, and loosen the timings further from where they are to see if you can hit the 3200mhz. The only downside being that, as you loosen the timings for functionality, you loose the benefits of faster ram. Because fast ram doesn't always make up for the benefits of tighter timings (which increases bandwidth) so there's a bit of a trade off there.

You could try sell you existing ram to offset the cost of buying a matched set of DIMMS on the QVL for your mobo.

Keep in mind though at 2866mhz your not that badly off. After 2966mhz the benefits of faster ram drop off at higher speeds. The biggest improvement in performance is between 2400 and 2966,

 

lenqq

Prominent
Dec 4, 2017
12
0
520
okay thanks Keith, if that is the case I might hold onto this ram an buy some of that Sweet Samsung B-DIE recommended ram at a later date, what speeds have you guys reached with CPU
 


no probs.

that not a bad idea. One note though, if you are getting new ram down the line, factor in what you need. 16gb is now the standard for Ultra 1080p AAA games. BF1, Wolfenstein 2, and Destiny 2 and most new games have already pushed past 8gbs. 8gbs used to be the sweet spot. But now thats 16gb for gaming. SO when you go to get new ram, get 2 x 8gb matched dimms. Don't get another 8gb to add to what you have. That will lead to even more issues with compatibility mixing modules.

I'm hitting 3.9 on the cpu now. I think i'm very lucky. I have my vcore at 1.3, and it's stable Prime tested overnight. So i'm happy with it. I touch between 73-77c on stress temps, but I haven't changed any fan profiles. So with low voltages and good temps, I think I can push 4ghz. With that said Ryzen maxes out about 4/4.1 on air, and the extra 100/200mhz will translate to nothing except a few points in a synthetic bench here or there. So I'm happy out.

Even at stock the 1600x handles anything i throw at it, with great results. At 3.9 i get a few extra FPS, and bench scores.

Also, i don't know if this helped me, But I OC'ed the CPU first, with extensive testing with Prime95 small ffts, memtest (at stock), and every other bench/stress software, to ensure stability and that there was a perceivable/measurable performance increase.

OC'ing my ram was a different story. I got simple Crucial generic 2400 dimms (2 x 8gbs). I didn't think I'd have much overhead for OC'ing. With that said, I bumped the memory strap up one notch to 2666 with no voltage increase at all, and tested it for 8 hrs with memtest, passing 3 cycles without error. So I'm happy with that too. Again, I think i have a bit more headroom, and will try another bump soon.

As a matter of interest, what is your max overclock with min voltage? Like, lets say 1.35 volts what your max CPU clock.

1.38/1.39 is okay. But it's high enough for a 24/7 system. If you were getting 3.8ghz at 1.35 that would be what i would recommend for a 24/7 system. Still if your max temp is 71 on Prime with Small FFT's, then 1.38/1.39 is sustainable.
 
this is a nice little article on Ryzen OC. There maybe some bits in there you haven't done/checked that could be of use : http://www.overclockers.com/amd-ryzen-overclocking-guide/

But I suspect you know it's all about trial and error with OC'ing.

Another thing to consider is LLC. I've not messed with it yet, but will be. I have set it on level one, as this seems to be the default setting on OC's up to 3.9. If you are at 4ghz already, setting the LLC at level 2 (or whatever the corresponding setting is for your mobo) might be a good idea. LLC combats vdroop, which can cause stability issues. So by setting the LLC at 2, it may be more stable if you want try push for 4.1 or lower vcore, with high clocks. It's worth testing. Don't go above L3 though, which is only meant for insane OC'ing.
 

lenqq

Prominent
Dec 4, 2017
12
0
520
you're wrong I'm a complete novice, I've yet to tweak to see what I can achieve this clock speed at I plan to take it down a few notches tonight perhaps 1.37V an run a small FFT test while I go to bed, the load line calibration I can't seem to find a setting for my motherboard, though I believe setting SoC Voltage to 1.1V is having the same effect?! my voltage is very jumpy an goes from 1.38V to 1.392
 


Well, for me at least when OC'ing, my objective is to have the highest clockspeed with lowest stable voltage and lowest temps.

ah I see. Well, If i can be of help, just PM me. LLC is there somewhere, it may be called something else, although I'm sure it's not SOC. That voltage (SOC) shouldn't go above 1.1, so if you can back it to 1.05 which is better.

Ill see if I can match my settings (vcore voltages etc) with the names/versions on your mobo, and give you some setting to dial in and test. Keep in mind what works for me, may not work for you. But the point being you'll get an idea of what to change, and where to start. OC'ing is great fun, but measure and record as you go, so you have something to refer to for a baseline.

Anyway, enjoy your evening (it's evening here), and PM if you have any questions.
 

lenqq

Prominent
Dec 4, 2017
12
0
520
"There is no loadline calibration control for this motherboard, either. This is something that seems to be common for the lower-end AM4 offerings using the B350 chipset, as we saw on ASRock’s Fatal1ty AB350 Gaming K4. With that said, MSI offers a functional set of loadline calibration options that help an overclocking user better tune the voltage curve.
The CPU frequency multiplier is given 0.25x granularity, as it should be, and core disabling is also available to users who like to tinker."

I'm thinking to change the motherboard down the line too, it was well reviewed an rated but there is some draw backs, with this one - Any suggestions on what people are using to get decent overclocks?
 

lenqq

Prominent
Dec 4, 2017
12
0
520
im working down so far 1.368V stable 4.00GHZ 8 hour small FFT 67C an ram is stable at 2866MHz, I think I have a really good chip, I'm gonna continue to lower the voltage tonight

G.Skill Flare X 3200 MHz CL14 <-- this ram seems to be god of ryzen ram, I've read it is optimized for ryzen an xmp profile works without any tinkering for 3200mhz, it isn't low profile though so wont be great for my noctua d15