[SOLVED] Ryzen 5 Pro 4650G RAM can't handle more than 3200MHz

[JueH]

Hello! I just buy a Ryzen 5 Pro 4650G with ASRock B550m Pro4 for my daily setup and quite delighted with it!
Everything's fine for gaming, watching online videos using a browser, and other things... but there's a problem when I'm opening my local videos, Netflix app, Premiere, and other things that are showing videos...
This problem only occurs if I set my RAM to exceeds the recommendations speed on the AMD itself (you can see it here: AMD Ryzen™ 5 PRO 4650G | AMD ), the recommendations for the RAM Speed is 3200MHz but mine is 3600MHz (and I personally OC it until 4133MHz on CL18, everything is running smooth... from gaming till doing my work stuff)... so I try to tune it down until 3200MHz @1.3V with CL16...

The questions I had is there any way for me to set my RAM to its full potential speed? and if there's any, maybe can help/guide me to do that? Thanks!

This is my full specifications:

1. AMD Ryzen 5 Pro 4650G (AMD Ryzen™ 5 PRO 4650G | AMD )
2. ASRock B550M Pro4 (ASRock > B550M Pro4 )
3. KLEVV BOLT XR 16GB Kit 3600MHz (KLEVV )
4. ADATA XPG SX6200Lite (XPG SX6000 Lite PCIe Gen3x4 M.2 2280 Solid State Drive (adata.com) )
5. ID-Cooling SE-224-XT White (www.idcooling.com/Product/detail/id/204/name/SE-224-XT WHITE )
6. FSP Aurum S 80 PLUS Gold 600W (AURUM S | PSU | FspLifeStyle )

 

[logainofhades]

You have 3600 CL18 ram, which performance wise, really isn't any different than 3200mhz CL16.

 

[kerberos_20]

if hes running APU without external GPU, then 3600 will outperform 3200
btw u forgot to mention what issue u have with videos?

 

[logainofhades]

if hes running APU without external GPU, then 3600 will outperform 3200
btw u forgot to mention what issue u have with videos?

CL16 3600 would be faster, but CL18 not so much. Timings matter just as much, as speed does, especially for Ryzen's infinity fabric.

 

[JueH]

if hes running APU without external GPU, then 3600 will outperform 3200
btw u forgot to mention what issue u have with videos?

Ah, sorry for that one...

this kind of error that i had

 

[JueH]

You have 3600 CL18 ram, which performance wise, really isn't any different than 3200mhz CL16.

Okay, but as i mentioned before that i'm able to OC the memory to 4133MHz CL18... does it much different compared to 3200MHz CL16?

 

[MeanMachine41]

Okay, but as i mentioned before that i'm able to OC the memory to 4133MHz CL18... does it much different compared to 3200MHz CL16?

Considering the fact that memory timings have little impact on game performance, it's clear that you should prioritize faster memory clock over lower Cas Latency (CL). Meaning 4133mhz cl18 is better than 3200mhz cl16.

How did you achieve 4133MHz as normally to run DDR4-4133, your BCLK must be set at 103.33.
Nevertheless you have a strong IMC at 4133MHz if stable.

 

[JWNoctis]

4133MHz CL18 is better than 3200 CL16 in both bandwidth and CAS latency, since the latter is also frequency dependent - 8.8ns vs 10ns.

Either way, if you could clear both Memtest86 and Prime95 at 4133MHz CL18, then by all means go for it - Can't see images on my network, but whatever problem there is, it's unlikely to be directly memory-related in that case.

EDIT: Also look into your processor's FCLK - Read more here. Lower your memory frequency for 1:1 FCLK:Memory, if needed.

 

[JueH]

Considering the fact that memory timings have little impact on game performance, it's clear that you should prioritize faster memory clock over lower Cas Latency (CL). Meaning 4133mhz cl18 is better than 3200mhz cl16.

How did you achieve 4133MHz as normally to run DDR4-4133, your BCLK must be set at 103.33.
Nevertheless you have a strong IMC at 4133MHz if stable.

Ummm, I'm not really good at OC so i just set my memory to XMP Profile on BIOS Settings and change the memory clock to 4133MHz and set infinity fabric into 2067MHz and the BCLK still remain auto...

But the problem is coming when i open my video app, it shows really bad video (put the screenshot on the comment above)...
Do you know why it occurs and even how to resolve it? cause it's not showing that problem when i set the memory speed into 3200MHz

 

[JueH]

4133MHz CL18 is better than 3200 CL16 in both bandwidth and CAS latency, since the latter is also frequency dependent - 8.8ns vs 10ns.

Either way, if you could clear both Memtest86 and Prime95 at 4133MHz CL18, then by all means go for it - Can't see images on my network, but whatever problem there is, it's unlikely to be directly memory-related in that case.

EDIT: Also look into your processor's FCLK - Read more here. Lower your memory frequency for 1:1 FCLK:Memory, if needed.

Okay, thanks for the insight from the technical stuff... just try memtest86 ystd and it passed fine... and i don't really know about checking processor's FCLK... is it the Infinity fabric thingy? Cause i set it into 2066MHz since my aim is to achieve 4133MHz... is it 1:1? Thanks...

 

[JWNoctis]

Okay, thanks for the insight from the technical stuff... just try memtest86 ystd and it passed fine... and i don't really know about checking processor's FCLK... is it the Infinity fabric thingy? Cause i set it into 2066MHz since my aim is to achieve 4133MHz... is it 1:1? Thanks...

Yes, it is. But no, you probably cannot - Per the article linked:

The Infinity Fabric also has its clock speed limitation with 99.9% of Ryzen 2nd Gen (3000 Series) CPUs topping out at 1900 MHz. Some of the lucky consumers do not need to increase the SoC (System on a Chip) voltage to reach 1800 MHz, but it is required to reach 1900 MHz. After trying to reach above 1900 MHz FCLK myself for many months, I have only found two validated forums posts with stable systems that did not exceed the safe voltage limit of the SoC. With this information we can assume, besides setting benchmark records, 1933 MHz and above is not practical for daily use, if at all possible for many.

4000-series, being of the same generation, should be similar. Give it a read.

 

[JueH]

Yes, it is. But no, you probably cannot - Per the article linked:

4000-series, being of the same generation, should be similar. Give it a read.

Ummm, i've read the article that you have sent before... but even if i set my ram into the default XMP Profile (3600MHz CL18 @1.35V) and the problem still occurs... by 3600 it means the FCLK should be on 1800MHz which below 1900MHz...

 

[MeanMachine41]

But the problem is coming when i open my video app, it shows really bad video (put the screenshot on the comment above)...
Do you know why it occurs and even how to resolve it? cause it's not showing that problem when i set the memory speed into 3200MHz

Well it's due to the frequency set at 4133MHz or the GPU is artifacting because of it.
Best is to set the frequency to 3200MHz stable. Very little performance gains anyhow when gaming.

 

[logainofhades]

4133 is hurting performance, as it would force you into a 2:1 ratio, on your ram, increasing latency.

 

[JueH]

4133 is hurting performance, as it would force you into a 2:1 ratio, on your ram, increasing latency.

yes, as I said before... even if I tune down the speed into 3600MHz i still get the same problem

 

[JueH]

Well it's due to the frequency set at 4133MHz or the GPU is artifacting because of it.
Best is to set the frequency to 3200MHz stable. Very little performance gains anyhow when gaming.

ahh, okay then... thanks for the info! will tune down to 3200MHz with CL16 for now... will set it up to 3600 again once I had GPU... Thanks again!

 

[JueH]

Update::

Manage to run 4000MHz in 1:1 ratio with CL18

What I do is changing the SOC Voltage from 1.1V (Auto) into 1.2V and artifact problem is gone. Thanks to MeanMachine41 to explain me the DRAM Frequency.

 

[MeanMachine41]

Update::

Manage to run 4000MHz in 1:1 ratio with CL18

What I do is changing the SOC Voltage from 1.1V (Auto) into 1.2V and artifact problem is gone. Thanks to MeanMachine41 to explain me the DRAM Frequency.

What I do is changing the SOC Voltage from 1.1V (Auto) into 1.2V and artifact problem is gone. Thanks to MeanMachine41 to explain me the DRAM Frequency.
[/QUOTE]

What you have now are very loose timings (Not conducive to good performance) and yes increasing SOC would help the IMC. Be careful with SOC as excessive voltage can ruin the chips IMC.
A lower frequency with tighter timings is often better for performance and stability.

 

[JueH]

What I do is changing the SOC Voltage from 1.1V (Auto) into 1.2V and artifact problem is gone. Thanks to MeanMachine41 to explain me the DRAM Frequency.

What you have now are very loose timings (Not conducive to good performance) and yes increasing SOC would help the IMC. Be careful with SOC as excessive voltage can ruin the chips IMC.
A lower frequency with tighter timings is often better for performance and stability.
[/QUOTE]
Hey! Thanks for checking the timings, but that is the default timings from the XMP profile... and I don't really know what to set there too ._.