Question I bought RAM that is too fast for MB

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David_676

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Apr 6, 2017
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I checking my RAM QVL and bought 3600CL14 RAM as it listed my MB. After a few months of troubleshooting intermittent errors, I checked the QVL for the CPU and MB and saw that they do not list my RAM. While the system runs fine at 2133, I paid a lot for this RAM and I would like to get the most I can out of it. Could someone point me to a good tutorial or if it's easy enough, just tell me how to set my RAM up, maybe for 3600 CL15 or CL16? I have only ever used XMP/DOCP profiles, I have never messed with timings before. Maybe just upping the voltage would get it to run at CL14? I don't need every last ounce of power, I just want it to be stable at the 3600 I paid for. I figured it's best to get some advice before messing around with things. I would greatly appreciate any advice I can get.

System info:
CPU: AMD Ryzen 5950X
RAM: G.skill Trident Z Royal 3600 cl14 (2 x 16GB) Part Number F4-3600C14-16GTRG
MB: ASUS ROG X570 Crosshair VIII Hero (Wi-Fi)
GPU: EVGA 3080 FTW3
PSU: be quiet! Straight Power 11 Platinum 1000W, BN644
Storage: 2 HDDs, 1 SATA SSDs, 1 Samsung 980 Pro 2TB Nvme M.2 Gen4
OS: Windows 10
 
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Hmm. Shouldn't be giving you that much grief and they should be running at 3600 cl14 with no trouble at all, they are designed for that so maybe it's something else. Slot population should be 2nd and 4th slot from cpu, as implied.

Check ram with Memtest86 - hopefully no errors but a chance one of the two could be faulty. https://forums.tomshardware.com/threads/is-techpowerup-memtest64-reliable.3456044/

See how you go testing them at default speeds. Perhaps try xmp with each memory separately in 2nd slot from cpu.

Shouldn't need to adjust timings but CL16 if you want to give it a crack. CL 15, or odd timings, aren't supported on Ryzen. Dram volt 1.35v, make sure xmp changes that, it should.
 
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Lutfij said:
BIOS version for your motherboard at this moment of time? As for the rams, which slots are they populating on said motherboard?
Click to expand...

4304 is the BIOS version, I updated it recently, but just checking the site, there was a new release on the 8th of this month. I will update.
They are in the proper slots as well.
 
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boju said:
Hmm. Shouldn't be giving you that much grief and they should be running at 3600 cl14 with no trouble at all, they are designed for that so maybe it's something else. Slot population should be 2nd and 4th slot from cpu, as implied.

Check ram with Memtest86 - hopefully no errors but a chance one of the two could be faulty. https://forums.tomshardware.com/threads/is-techpowerup-memtest64-reliable.3456044/

See how you go testing them at default speeds. Perhaps try xmp with each memory separately in 2nd slot from cpu.

Shouldn't need to adjust timings but CL16 if you want to give it a crack. CL 15, or odd timings, aren't supported on Ryzen. Dram volt 1.35v, make sure xmp changes that, it should.
Click to expand...

I thought it would have been fine as well but it isn't on the QVL for the CPU or MB. They are in the correct slots I have tested them with Memtest with no errors, default speeds work fine, that is what I have it set to now and it has run without error for a few days, whereas there were multiple errors every day before I set to default speeds. Is the CL all I have to change? other than making sure the voltage is 1.35?
 
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Lutfij said:
You sure you got the BIOS version correct? That number does not show up on Asus's support page;
rog.asus.com

ROG Crosshair VIII Hero (WI-FI) | Motherboards | ROG Global

ROG CROSSHAIR VIII HERO(WI-FI)
rog.asus.com rog.asus.com
nothing between 4402(dated 2023/02/08 ) and 4006(dated 2022/03/10).
Click to expand...

yeah, CPU-Z is reporting the right number, it is dated 12/12/22, maybe they pulled it? Not sure what is going on there, but the issues predated the bios update.
 
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To my understanding 3600 cl 14 is the best of the best for AMD platforms .. i usually did 3600 cl 16 with my 3700x 5600x and 5800x3d ..

And the the only reason i used 3600 cl 16 was because of price the holy grail of 3600 cl14 is not cheap!!

i would say remove the ram make sure its seated correctly and in the correct slots and check the mobo bios and enable xmp !!
 
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ilukey77 said:
To my understanding 3600 cl 14 is the best of the best for AMD platforms .. i usually did 3600 cl 16 with my 3700x 5600x and 5800x3d ..

And the the only reason i used 3600 cl 16 was because of price the holy grail of 3600 cl14 is not cheap!!

i would say remove the ram make sure its seated correctly and in the correct slots and check the mobo bios and enable xmp !!
Click to expand...

I thought so as well, but it isn't listed on any of the QVL's other than the RAM QVL. So G.Skill Thinks it should work, but the others disagree I guess. I have reseated many times, updated the BIOS, it still gave errors. I may have just gotten bad silicon, and CL14 is just a bit too fast. I didn't really notice any issues until 4 months after it was built, it's about 8 months old, I wasn't really looking for errors either tho, it wasn't until the first lockup that I started checking the reliability report.
 
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David_676 said:
I thought it would have been fine as well but it isn't on the QVL for the CPU or MB. They are in the correct slots I have tested them with Memtest with no errors, default speeds work fine, that is what I have it set to now and it has run without error for a few days, whereas there were multiple errors every day before I set to default speeds. Is the CL all I have to change? other than making sure the voltage is 1.35?
Click to expand...

QVL, although good starting place for memory compatibility, it's only a selection of ram on hand for testing amongst many skus out there and usually is not updated to include memory manufactured after the board was released. The updates will come from memory manufacture.

https://www.gskill.com/qvl/165/299/1604306248/F4-3600C14D-32GTRG-QVL

I was wrong about dram v being 1.35v. they run at 1.45v. See if xmp changes it to 1.45v. It should. If it does then try manual with same timings xmp sets. There are secondary timings and think a third but that's getting a lil too complicated for my level lol. Try focus on the primary timings, as you see advertised in main memory specs. That's if you need to change them, 1.45v might work if it has never been set.

Videos of Ryzen dram calculator to find optimised values might help further. There are other videos but for a start,

View: https://youtube.com/watch?v=tXOhi6DnZR4&feature=shares
 
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boju said:
QVL, although good starting place for memory compatibility, it's only a selection of ram on hand for testing amongst many skus out there and usually is not updated to include memory manufactured after the board was released. The updates will come from memory manufacture.

https://www.gskill.com/qvl/165/299/1604306248/F4-3600C14D-32GTRG-QVL

I was wrong about dram v being 1.35v. they run at 1.45v. See if xmp changes it to 1.45v. It should. If it does then try manual with same timings xmp sets. There are secondary timings and think a third but that's getting a lil too complicated for my level lol. Try focus on the primary timings, as you see advertised in main memory specs. That's if you need to change them, 1.45v might work if it has never been set.

Videos of Ryzen dram calculator to find optimised values might help further. There are other videos but for a start,

View: https://youtube.com/watch?v=tXOhi6DnZR4&feature=shares
Click to expand...

Thanks, I set the CL to 16 and it still had errors, the voltage was 1.448
 
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SkyNetRising said:
Can you show screenshots from CPU-Z - memory and spd sections?
(upload to imgur.com and post link)
Click to expand...

https://imgur.com/a/qCqOekX
View: https://imgur.com/a/qCqOekX

here ya go, I also added some other info including ryzen dram calculator that seems to say 1.4 volts is the max, DOCP set it to 1.448, I think it should be able to handle that level, but I'm giving 1.4 a try just to see what happens, still have CL set to 16, everything else is same as DOCP
 
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David_676 said:
here ya go, I also added some other info including ryzen dram calculator that seems to say 1.4 volts is the max, DOCP set it to 1.448, I think it should be able to handle that level, but I'm giving 1.4 a try just to see what happens, still have CL set to 16, everything else is same as DOCP
Click to expand...
I would not recommend going above 1.35V for DDR4.
Set latencies 16-15-15-36
DDR voltage 1.35V
Command rate 1T

Set DRAM frequency to 2133mhz and test.
Increase frequency gradually and test after each step.
2400,2600,2800,2933,3000,3200,3400,3600.

When test fails, return to previous settings that worked.
 
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SkyNetRising said:
I would not recommend going above 1.35V for DDR4.
Set latencies 16-15-15-36
DDR voltage 1.35V
Command rate 1T

Set DRAM frequency to 2133mhz and test.
Increase frequency gradually and test after each step.
2400,2600,2800,2933,3000,3200,3400,3600.

When test fails, return to previous settings that worked.
Click to expand...

Thanks, I will give that a shot. It seems DOCP set voltage to high then, hopefully it didn't do any damage.
 
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Zerk2012 said:
A lot of the Trident series memory is 1.45 volts.
Click to expand...

That's what I thought but it does seem to be running better at 1.4. It hasn't been long enough to know for sure tho. My MB should be more than enough to handle it, is it possible my MB is faulty? Would then even RMA it if it does end up running fine at lower voltages?
 
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