[SOLVED] Ryzen 3700X stuck at 1700mhz FCLK ?

Page 2 - Seeking answers? Join the Tom's Hardware community: where nearly two million members share solutions and discuss the latest tech.
Hello all, hope you're well

Here is my system specs:

-Ryzen 3700X +200mhz pbo, runs 4200mhz during all core load like cinebench
-Asus strix 2080 ti oced
-32gb 4x8gb ddr3400 c14 fclk 1700mhz (I cant get past 1700mhz fclk)
-Seasonic 1200w Prime Gold
-Asus TUF x570 latest bios motherboard
-M.2 ssd samsung 1tb, wd 2tb

My RAM is Gskill single rank Bdie 4x8Gb rated stock 3600mhz 16-16-16-36. I always failed no matter what setting or voltage I changed to get past 1700mhz fclk stable. Now its stable at 1700mhz fclk ddr3400 14-14-15-30. I would like to run it at 3600mhz c14 but even with c16 anything past 3400mhz/1700mhz fclk is unstable, anything above 1800fclk 3600mhz doesn't even boot no matter how much voltage I give etc

Is this the limit of my 3700X? What if I upgrade to a Ryzen 5800X3D? Will it run 3600-3800mhz RAM with 1800-1900fclk or 4 sticks is still too much?

Thanks!
 
Solution
MW2 is buggy. It crashes. There's multiple reports in reddit about that happening, and it's not isolated to extreme ram speeds, IF or amd cpus.

As per usual, it's a AAA title, therefor got rushed out the door, and they are using the general public to find the bugs.
No, there are multiple reports of MW2 crashing, it's buggy for sure, but most crashes are reported on pc's running higher than default specs, like with anything as simple and normal as xmp.
dx12 stresses hardware more (less delays, so hardware doesnt have time to recover)...you can find many posts about dx12 crashing while dx11 works fine (on games which supports both), workaround is to reduce graphic details
i had something similar in the past with ac valhalla, starting area was working wonders, but once i finished it and had to move to england on ship, it kept crashing in middle of video (its game rendered)..workaround was reducing details from ultra to medium, later on ive replaced PSU and issue went fully away...it was the only game crashing
 
  • Like
Reactions: Roland Of Gilead
Well guess what, it just crashed twice today in MW2. I don't understand why no crashes until now and crashes only happen in MW2, not in other games like Halo Infinite. I lowered ram speed to 3400mhz and now my pc won't boot at all, need to reset cmos battery.
 
Is it possible to make 4 ram sticks 100% stable with a 3700X or should I give up?

Edit: I just removed 2 sticks and it booted, set xmp defaults ran mw2 benchmark, no crashes so far. Using all default voltages for soc etc
 
Last edited:
Is it possible to make 4 ram sticks 100% stable with a 3700X or should I give up?

Edit: I just removed to sticks and it booted, set xmp defaults ran mw2 benchmark, no crashes so far. Using all default voltages for soc etc
YES it's possible but you'll probably have to down-clock the memory to do it. Either that or some VERY tedious tweaking of the timings and voltages. Even then you're not likely to approach the same maximum clocks with tight timings a 2 stick setup might achieve with the same DIMM's.

Either that or go looking for a motherboard that uses a T- topology memory layout instead of the daisy chain topology board you apparently have. T- topology makes stabilizing high clocks on 4-DIMM setups much easier at the expense of 2-DIMM setups. People having no problems stabilizing 4-stick setups at high clocks could just as easily have a T- topology board as platinum-grade CPU memory controller silicon....but they don't know it.

The value from 4 stick setups comes for working in extremely memory hungry applications that blow through the maximum allowed with only 2 sticks. Absolutely nothing is slower than hitting the swap file used for Windows' virtual memory: even minimum DDR4 clock speeds (2133, you should be able to do much better than that) is several orders of magnitude faster.
 
Last edited:
4xDIMMs Single rank are treated as dual rank by the IMC and this gives an increase in performance under some loads. Some games like it, others not so much. Time Spy cpu will get a bump in performance. I have got 4xDIMMs stable with an overclock too and it can take a lot of work. I have only one game that requires 32GB of RAM for its largest map but 32GB of RAM still helps with performance a bit. If its worth the money depends on you. For me it gets me to 16k Time Spy CPU and max's out my GPU at 1440p and 4k.

The main issue I had was my motherboard only supported my DIMMs at 3600 for 4xDIMMs. I have them at 4000. You need to run a stablity test to find out if you are unstable or if its just the game. Also check the driver information for your GPU and see if there is a known issue with the game your playing. One way to quickly check for an unstable overclock is to verify the game files and see if some are corrupt. If it is a RAM issue it could be tRFC, try increasing it be 30 and see if that helps but that is a guess on my part.

One game crashing could very well just be the game. This is the problem with overclocking. The question always becomes, "am I stable"?

GSAT you can boot from CD and it is a decent test for memory and IF issues. So is Prime95 large FFTs, Prime 95 large FFTs was better for me.
 
Last edited:
4xDIMMs Single rank are treated as dual rank by the IMC and this gives an increase in performance under some loads. Some games like it, others not so much. Time Spy cpu will get a bump in performance. I have got 4xDIMMs stable with an overclock too and it can take a lot of work. I have only one game that requires 32GB of RAM for its largest map but 32GB of RAM still helps with performance a bit. If its worth the money depends on you. For me it gets me to 16k Time Spy CPU and max's out my GPU at 1440p and 4k.

The main issue I had was my motherboard only supported my DIMMs at 3600 for 4xDIMMs. I have them at 4000. You need to run a stablity test to find out if you are unstable or if its just the game. Also check the driver information for your GPU and see if there is a known issue with the game your playing. One way to quickly check for an unstable overclock is to verify the game files and see if some are corrupt. If it is a RAM issue it could be tRFC, try increasing it be 30 and see if that helps but that is a guess on my part.

One game crashing could very well just be the game. This is the problem with overclocking. The question always becomes, "am I stable"?

GSAT you can boot from CD and it is a decent test for memory and IF issues. So is Prime95 large FFTs, Prime 95 large FFTs was better for me.
Are you also on AMD? Which CPU? I feel like AMD memory controller really suck vs Intel, I have always had better luck with ram compatibility and OCing on Intel platforms.
 
Are you also on AMD? Which CPU? I feel like AMD memory controller really suck vs Intel, I have always had better luck with ram compatibility and OCing on Intel platforms.

I have overclocked a AMD 3800x to 1900 IF and DDR4-3800. I got those odd rare crashes and reboots in memtest86. With the 10900k for example I was stable IMC/RAM wise in tm5 extreme cfg. My issue was vccio or for AMD IF. Once I got vccio stable then I got a far better RAM overclock, the b-die tightened like it should and the system stayed stable. Same with the IF you step back say from 1900 to 1800 and its stable. Or you increase the voltage and its stable.

If only one game is affected then you could get lucky and it could be just the game or a driver issue.
 
MW2 is buggy. It crashes. There's multiple reports in reddit about that happening, and it's not isolated to extreme ram speeds, IF or amd cpus.

As per usual, it's a AAA title, therefor got rushed out the door, and they are using the general public to find the bugs.
 
  • Like
Reactions: Zizo007
Solution
Are you also on AMD? Which CPU? I feel like AMD memory controller really suck vs Intel, I have always had better luck with ram compatibility and OCing on Intel platforms.
False thinking for AMD's modern CPU's, although Zen 1/1.5 was certainly harder to get high clocks even for 2 DIMM setups. But while the mem controller is certainly different in how it works it's been considered comparable to Intel's since Zen 2 (3000 series CPU's) were released. AMD's IF is a key part of the difference: optimal stability above 3600Mtps is only retained if you de-link the IF, if you do NOT delink the IF then CPU stability becomes an additional factor in stability. That's not bad or a mark of inferior quality, just different design trade-offs.

Also, while you may be able to attain higher clocks on some of Intel's CPU's and boards the actual benefit to performance is less when you get it. At least that's what's been reported quite a lot by reviewers who I can trust...not the least because they have more experience with a larger variety of boards and RAM kits.

And 4-DIMM setups will always be a problem as it makes motherboard memory trace routing design far more critical for stability. AMD democratizes overclocking, that means most people attempting it with AMD tend to be using low-end boards that don't have the benefit of costlier T- topology trace routing.
 
Last edited:
  • Like
Reactions: Zizo007
I am now running 2 sticks 3800mhz 1900if played Halo Inifinite, MW2, AC Valhalla for hrs, no crashes. If it crashes again only in mw2 then I am sure its the game so I am either going back to 4 sticks or selling 2 sticks. Btw All Call of Duty games since MW 2019 have been crashing on my PC, sometimes a game update fixes it. Vanguard never crashed after they made a mid year update. But yea its ridiculous that they launch buggy games on PC while on consoles they don't crash and are more optimized, I play crossplay with a friend who is on Playstation, now on PS5.

Thanks all for the good ideas
 
4x sticks SR is the same as 2x sticks DR to the memory controller, albeit with a little higher latency.

For Zen3, 2x16Gb is the lowest overall latency, followed closely by 4x8Gb SR. Even 2x8Gb SR isn't as fast, 2x8Gb DR is faster. Zen3 just happens to work best with 4, dual rank in dual channel or single rank in dual channel x2.

The biggest difference between Amd and Intel is that Intel really doesn't give a cr** about you or your cpu. It'll fully allow you to come within a hairs breadth of burning it up before it shuts down. Sure, it's higher performance, at a cost, but it totally relies on you as the user to keep it tamed with coolers and settings.

Ryzen doesn't look at it that way. A Ryzen will always give its best performance within boundaries, it won't allow you to easily kill it, regardless of cooler or settings.
 
Keep trying with 2xDIMMs and see if that helps. Its harder to get 4xDIMMs to work. Checking your motherboard memory QVL to see if it supports your RAM as 2xDIMMs or 4xDIMMs. If its just one game then it could be a game related issue. I have seen a nvidia driver version that would cause Destiny 2 to freeze and lockup the PC. 100% like if you had a bad overclock. Also you can try removing the pbo +200Mhz overclock and see if that helps.

If something crashes, does stock setting fix it?
 
Keep trying with 2xDIMMs and see if that helps. Its harder to get 4xDIMMs to work. Checking your motherboard memory QVL to see if it supports your RAM as 2xDIMMs or 4xDIMMs. If its just one game then it could be a game related issue. I have seen a nvidia driver version that would cause Destiny 2 to freeze and lockup the PC. 100% like if you had a bad overclock. Also you can try removing the pbo +200Mhz overclock and see if that helps.

If something crashes, does stock setting fix it?
My ram is not in qvl list of my tuf x570 motherboard. As for stock settings idk as my ram stock is 3600mhz but if i set if to half that its considered oc.
 
My ram is not in qvl list of my tuf x570 motherboard. As for stock settings idk as my ram stock is 3600mhz but if i set if to half that its considered oc.
stock setting is jedec, that is XMP (overclock) disabled

PC works with XMP off and four sticks? if yes, then you can enable XMP, but reduce frequency,
once you manage to POST +memtest no errors with XMP at reduced clock, then either you can use that or customise voltages/timings for higher frequencies
 
Your ram is 2133MHz, same as all other DDR4. The 3600MHz is the xmp.

QVL is pointless, and totally taken out of context by most. It's not a list proving certain ram is certified or guaranteed to work, it's a list of ram the Vendor tested, guaranteeing the Motherboard works. Qualified Vendor List.

Most of the ram commercially made is done by 3 OEMs, Samsung, Micron and SkHynix. You'll find the same chips in Corsair as in G.Skill, Kingston and Crucial, Patriot and Samsung etc. So if you test a 3200MHz Corsair LPX, you've tested some G.Skill RipJaws, or even some Trident-Z. If you test the black and white Trident-Z, it's the same as the camo or red or Royal.

Every change in color or kit or heatsink changes the model number. So just testing Red Trident-Z, and putting that model number on the QVL doesn't mean the blue Trident-Z is questionable because it wasn't tested.

There's over 3000 diffent Trident-Z DDR4 model numbers. Add that to the Value, Aries, RipJaws, every model of Crucial, Adata, Kingston, Patriot and 100 other ram vendors, and you'd have a QVL thousands of pages long, taking years of manhours to compile, for every mobo model made by that vendor. That's pure insanity.

So they test a couple of kits they have on hand, and say 'mobo works, see, we tested it' and call it a day.
 
  • Like
Reactions: drea.drechsler
Your ram is 2133MHz, same as all other DDR4. The 3600MHz is the xmp.

QVL is pointless, and totally taken out of context by most. It's not a list proving certain ram is certified or guaranteed to work, it's a list of ram the Vendor tested, guaranteeing the Motherboard works. Qualified Vendor List.

Most of the ram commercially made is done by 3 OEMs, Samsung, Micron and SkHynix. You'll find the same chips in Corsair as in G.Skill, Kingston and Crucial, Patriot and Samsung etc. So if you test a 3200MHz Corsair LPX, you've tested some G.Skill RipJaws, or even some Trident-Z. If you test the black and white Trident-Z, it's the same as the camo or red or Royal.

Every change in color or kit or heatsink changes the model number. So just testing Red Trident-Z, and putting that model number on the QVL doesn't mean the blue Trident-Z is questionable because it wasn't tested.

There's over 3000 diffent Trident-Z DDR4 model numbers. Add that to the Value, Aries, RipJaws, every model of Crucial, Adata, Kingston, Patriot and 100 other ram vendors, and you'd have a QVL thousands of pages long, taking years of manhours to compile, for every mobo model made by that vendor. That's pure insanity.

So they test a couple of kits they have on hand, and say 'mobo works, see, we tested it' and call it a day.
some are cherry picked for few select mainboards, some have XMP tweaks for AMd, some for intel, some have multiple profiles...sooo its not entirely correct...but in some sense yes, if you know what IC is inside than you know what you can expect from it
3600 CL16 good bin, 3600 cl18 normal bin, 3600 cl20 potato bin (for b-die at 1.35v)
looking at mobo QVL, samsung/hynix/micron are all listed in four slots at 3600mhz+ so we can exclude mobo traces
op has two mixed pairs which in itself is an issues as XMP is tested with that pair, using two mixed pairs will in most cases require some tweaks with subtimings as long that mobo has working traces at that ram clock (which QVL says it has)...
 
3600 CL16 good bin, 3600 cl18 normal bin, 3600 cl20 potato bin (for b-die at 1.35v)
3600 CL16 is normally Samsung B-die,Hynix CJR/DJR
3600 CL18 is normally Hynix CJR/DJR, Micron B
3600 CL20 is normally anything else from Samsung D, E, Micron C, Nanya, other Hynix etc.

Its not just the CL. Other timings need to be looked at. My 3600 16-19-19-39 is CJR, a 16-18-18-38 is usually B-die.

And they all respond differently in the Secondary and Tertiary timings.
looking at mobo QVL, samsung/hynix/micron are all listed in four slots at 3600mhz+ so we can exclude mobo traces
op has two mixed pairs which in itself is an issues as XMP is
Exactly. That's all a QVL is for. Says it works at those speeds. Far too many are under the assumption that it's a Ram qualification, and not a motherboard qualification. 'My 3200 ram doesn't work, but it's not on the QVL, should I buy new?' Bah.
 
...
There's over 3000 diffent Trident-Z DDR4 model numbers. Add that to the Value, Aries, RipJaws, every model of Crucial, Adata, Kingston, Patriot and 100 other ram vendors, and you'd have a QVL thousands of pages long, taking years of manhours to compile, for every mobo model made by that vendor. That's pure insanity.
...
Adding to that...RAM mfr' are like every other mfr. and make process changes to existing kits and add kits to their product lines. That increases the insanity substantially if someone expects mfr's to keep a listing current, even for those models they have tested and added to their QVL's.

And besides that...the majority of the compatibility with memory lies with the on-die memory controller in the CPU. The more important QVL is the one AMD maintains. I expect Intel maintains something similar.
https://www.amd.com/en/processors/ryzen-compatible-memory
 
  • Like
Reactions: Karadjgne
The more important QVL is the one AMD maintains. I expect Intel maintains something similar.
As does G.Skill and Crucial. The best part of their QVL's is the constant updates as new ram is introduced. Mobo vendors do not retest. So when 3200MHz was the fastest ram available, that's what got tested and put on the website. A year later and ram is hitting 4400MHz, but the vendor QVL is still saying 3200MHz as is ppl like newegg and Amazon, who get their info from the mobo website.

A B350 could most likely handle 4400MHz with no issues, but you'll not see that in any vendor QVL.
 
  • Like
Reactions: drea.drechsler
Wow, sounds like it's been quite the adventure getting those stable.... Now you've got me nervous. Just bought essentially the same ram F4-3600C16Q-32GTZKK as the candle on the top of my upgrade. Asus Prime B350 plus, 5700x. Currently using 2x8 cl14 3200mhz and it's never crashed out of MW2 DMZ.... Sounds like that might be changing soon. Yikes! My original 1600x CPU would crash out of cold war zombies all the time with the 3200 cl14, changed when I upgraded to the 3700x, which was just swapped out last month. Hoping the ol B350 and newer mem controller on the 5700x can run 4 sticks stable as XMP.... Fingers crossed.