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RAM crash at XMP on Ryzen 7

post #1 of 8
Thread Starter 
Hello everyone
and thank you for your patience if you have encountered this issue before.

I am aware that DDR 4 default frequency is 2133Mhz and that Ryzen likes it. That said, numerous overclockers online have proved that 3200Mhz can work (and work well !!).

My rig:
Ryzen 1700 @ 3.7Ghz
Gigabyte AX370-Gaming 5 (bios F5)
Corsair Vengeance LPX 32GB (2x16) 3000Mhz 15-17-17-35 1.35v DDR4
Evga GTX 1070 SC
Corsair RM850 watts
Samsung Evo 500GB

I have done my homework and researched how to successfully overclock the ram. All I could find was that most people activates Profile 1 (XMP) and get it to run at 2933Mhz rather that the basic 2133Mhz.

If I do that, I get error 55 (ram not present) and an infinite reboot loop.

So i manually checked voltages and timings. I brought the voltage to 1.36V, which seems helpful, and adjusted the timing, which were slightly off.

Now the bios does load!! But it soon crashes.... (by freezing)

At this point, the reboot loop kinda happens. If i switch the machine off, let it rest for a couple of minutes and restart, the bios will load again, but soon crash again.

If i dont enter the bios and let it run to windows, CPU-Z says that ram is running at 2133Mhz and, funnily, the CPU is back at 3.0Ghz...

Not sure what I am doing wrong!!

Any help or suggestion are strongly appreciated.
Thank you

Spieluhr
post #2 of 8
Quote:
Originally Posted by spieluhr View Post

Hello everyone
and thank you for your patience if you have encountered this issue before.

I am aware that DDR 4 default frequency is 2133Mhz and that Ryzen likes it. That said, numerous overclockers online have proved that 3200Mhz can work (and work well !!).

My rig:
Ryzen 1700 @ 3.7Ghz
Gigabyte AX370-Gaming 5 (bios F5)
Corsair Vengeance LPX 32GB (2x16) 3000Mhz 15-17-17-35 1.35v DDR4
Evga GTX 1070 SC
Corsair RM850 watts
Samsung Evo 500GB

I have done my homework and researched how to successfully overclock the ram. All I could find was that most people activates Profile 1 (XMP) and get it to run at 2933Mhz rather that the basic 2133Mhz.

If I do that, I get error 55 (ram not present) and an infinite reboot loop.

So i manually checked voltages and timings. I brought the voltage to 1.36V, which seems helpful, and adjusted the timing, which were slightly off.

Now the bios does load!! But it soon crashes.... (by freezing)

At this point, the reboot loop kinda happens. If i switch the machine off, let it rest for a couple of minutes and restart, the bios will load again, but soon crash again.

If i dont enter the bios and let it run to windows, CPU-Z says that ram is running at 2133Mhz and, funnily, the CPU is back at 3.0Ghz...

Not sure what I am doing wrong!!

Any help or suggestion are strongly appreciated.
Thank you

Spieluhr

loosen your timings - like 18-18-18-36 for example
post #3 of 8
Thread Starter 
Cheers Doc
timing helped getting to 2400mhz thumb.gif
..but no higher frown.gif
Could it be cos it's 32gb rther than 16 like most overclockers are showing online ? i might try that next, although it would be just for curiosity, as i do need the 32gb.

Thanks
post #4 of 8
You need to go into Misc adjustments under MIT. Get PCIE to GEN 3 for some reason that adjust some voltage somewhere on the Gigabyte board. Manual set your timings and voltage. You should be able to get it up to 2933 with that. If it freezes let it cycle for a few mins. It takes 10 cycles on a Gigabyte board then it cycles back to factory settings and will boot.
The best way to do most of this is with the Ryzen Master utility. Once you get everything where you want it in the Master Utility then you know the settings that will work in BIOS and you can go back and do it there.
I had massive trouble with the XMP profile and was doing it manually. Then it crashed when I tried the new bios with XMP. I let it cycle for 30 mins and it booted up with 3200 and timings set. I dont know if it is just cycling through every possible RAM setting or what but it worked.
post #5 of 8
Ok first, make sure you have the BIOS switches set for Single Bios mode, and set to main bios. If you have problems or **** the bios, you switch to the backup bios and reflash the main one. Also if in dual bios mode, if the computer fails to boot with one bios, it will switch to the other and boot with those settings (most likely default)


Up the SOC voltage to 1.2v (important)
Memory to 1.35 or 1.4v
Change memory speed to 2933mhz
Set timings a bit looser than specified, in this case maybe 16/18/18/18/35

Boot away.

If that doesn't work, Clear cmos and try at 2666mhz.

It boots and stable, tighten timings
post #6 of 8
Thread Starter 
Thank you both Swift and Kush.
Here's what happened.
With the settings you suggested (including Gen3), I managed to get the ram at 2600mhz, which was already a good result! Any more than that would just cycle and eventually get stuck on code b2 (starting PCI) and not relaunch the bios. Cleared the Cmos and tried in a different way. I set all the Voltages from the bios (1.3v for the cpu and 1.38v for ram) and the I had a look at the Ryzen Master UI, which I kind of disregarded until now. From there I set the CPU frequency (rather than from the bios) as well as the Dram clock and timings. I wanted to give myself some space, so I increased the timing even more, which apparently shouldn't bottleneck the performance (according to several youtube ryzen ranters). I went for 18-19-19-19-37 and the clock at 1466 and at restart EVERYTHING WAS UP.

The CPU was happily running at 3.8ghz and the Ram was on 2934mhz. I tried to overclock it to 3200mhz but it didn't work.
Also, with the Precision OCX I got my 1070 to push a bit more (2100mhz / 4600mhz) and finally GR Wildlands is running at 30fps at 4k Very High, which is a great achievement. thumb.gif

Now there's only one thing I'm confused about. After all this, I went into the bios to check the situation and the clocks were at default (cpu at 3ghz and ram at 2133mhz). But when windows starts CPU-Z tells me everything is running at overclocked speed (3.8ghz and 2933mhz). Is this correct? Does the Ryzen Master UI work at OS level on startup rather than at bios? And if so, why does the ram run at 2933 only via the utility and not by using the exact same setting in the bios? Maybe because the utility "talks" to Ryzen CPU better than the motherboard alone?
I would have preferred a bios solution, but I am thrilled that finally my rig is running at the speed it is supposed to.

Thank you for your help. I hope this will help other Ryzeners in trouble.
Happy OC to you all

Spieluhr smile.gif
post #7 of 8
Sometimes on a cold boot it may not accept the overclock and boot into bios at default, but then just exiting it will post at proper speed and boot into windows. Ryzen is like that semi weird girl with an incredible body that you had the hots for in school, very good in bed but just a bit weird in a lovable kind of way. Hopefully the new AGESA code will solve many of these little weird issues.
post #8 of 8
Thread Starter 
Quote:
Originally Posted by Gigabytes View Post

Sometimes on a cold boot it may not accept the overclock and boot into bios at default, but then just exiting it will post at proper speed and boot into windows. Ryzen is like that semi weird girl with an incredible body that you had the hots for in school, very good in bed but just a bit weird in a lovable kind of way. Hopefully the new AGESA code will solve many of these little weird issues.

HaHaHa .. very accurate and effective metaphore biggrin.gif
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