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

[Zizo007]

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!

 

[Karadjgne]

I run 3600 cl16 on a 3700x without any problems. Can even run Clocktuner-2-for-ryzen with Dram Calculator to further improve timings and performance.

Can't see any normal reason why your ram would be any kind of issue.

 

[Zizo007]

Just an update, CoD MW2 stopped crashing since its Jan 30 update so it wasn't my RAM or OC the problem. Now I run 4x 8Gb 3666Mhz c16 with very tight subtimings getting 66ns latency in AIDA64. With 2x 8Gb its stable at 3800Mhz c16 64ns Latency.

Which is better, 4x 8Gb 3666mhz or 2x 8Gb 3800mhz given both are same timings? I was told 4 sticks are faster than 2 sticks as I have single rank ram, is that true?

 

[Zizo007]

I couldn't get c14 stable on 4 sticks with anything above 3466mhz. Isn't that weird since I have Samsung B-die RAM?

 

[drea.drechsler]

I couldn't get c14 stable on 4 sticks with anything above 3466mhz. Isn't that weird since I have Samsung B-die RAM?

What voltage did you use? B-die often needs 1.5V... or more... to push higher clocks at tight timings.

But then a daisy chain topology motherboard is really hard on the MMU for 4 sticks; a T-topolgy board should let you push your 4 sticks higher with the same CPU.

 

[Zizo007]

What voltage did you use? B-die often needs 1.5V... or more... to push higher clocks at tight timings.

But then a daisy chain topology motherboard is really hard on the MMU for 4 sticks; a T-topolgy board should let you push your 4 sticks higher with the same CPU.

I tried up to 1.45v. I am afraid of going above 1.45v as I don't have RAM cooling.

 

[drea.drechsler]

I tried up to 1.45v. I am afraid of going above 1.45v as I don't have RAM cooling.

RAM cooling beyond the heatsinks the mfr. provided on your sticks won't likely matter as DDR4 has such low power draw and is cool running. Even though I don't like operating much above 1.45V 24/7 either I have been running my GSkill 3200 B-die kit at 3600/1.47V for close to 4 years now. Their temperature never exceeds around 45C even during extensive memory stability testing. I'm also aware of several people running their B-die kits at 1.55V for several years with no problems.

B-die is not only tolerant of higher voltage but also really likes it for stability at high clocks. Not all DDR4 is like it though: Hynix CJR, for instance, seems to fall apart above 1.4V.

 

[kerberos_20]

B-die is not only tolerant of higher voltage but also really likes it for stability at high clocks. Not all DDR4 is like it though: Hynix CJR, for instance, seems to fall apart above 1.4V.

guess then mine b-die are bad bin, they throw errors at 1.4v no matter clock, but they are super stable even at 3733 cl16-15-15-32 1.35v

in my case IF is clock bottleneck, and ram doesnt like more voltage to reduce CL, guess it could handle CL15 aswell, but its AMD..so its 16

 

[drea.drechsler]

guess then mine b-die are bad bin, they throw errors at 1.4v no matter clock, but they are super stable even at 3733 cl16-15-15-32 1.35v
...

Bad bin? or really good bin Maybe there's something else going on since you're still yet getting good clock results at least.

Are you able to get CL14 @3733? I thought that was another trait of B-die: it's ability to still hold really tight timing even at high clocks.

 

[kerberos_20]

Bad bin? or really good bin Maybe there's something else going on since you're still yet getting good clock results at least.

Are you able to get CL14 @3733? I thought that was another trait of B-die: it's ability to still hold really tight timing even at high clocks.

without higher voltage no clue, could be mainboard limitation (probably weak vrm), it throws red numbers in bios and memtest doesnt pass even at 3200 (1.4v)

 

[zx128k]

Depends on the b-die bin if you can get 3600 CL14 to work. I have one kit that does CL15 and two that do CL14. Remember the memory controller has to like what you are doing. The CPU and motherboard.