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>^o.o^<___/
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157 Posts
Yeah the main problem with memory frequency on 1st and 2nd gen is with the IMC.
It still is on 3000 and later AMD ryzens, with high latencies and iffy RAM support. I just replaced a 1700 with 3700X in hopes for a better performance. Well, the memory (gskill 3600-16 sticks) went from 3000-14 to 3333-16. Anything higher than 3333 and it doesn't even POST into BIOS, regardless of ProcODT, and RAM or SOC voltages or timings. Performance-wise with all-core overclock it went up ~15%, and core clock went from 4000 to 4350 (4400 unstable), using the latest BIOS with 1006 AGESA. Framerates went from 55 to 54 FPS (GPU-limited). In my opinion, a +15% (synthetic) performance with a similar RAM OC and less FPS is $300 wasted on this side-grade, with a zero chance of a newer AMD AGESA or Asus BIOS to fix the IMC issues. Should've kept the Taichi.
 

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Ryzen Overclocker
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142 Posts
It still is on 3000 and later AMD ryzens, with high latencies and iffy RAM support. I just replaced a 1700 with 3700X in hopes for a better performance. Well, the memory (gskill 3600-16 sticks) went from 3000-14 to 3333-16. Anything higher than 3333 and it doesn't even POST into BIOS, regardless of ProcODT, and RAM or SOC voltages or timings. Performance-wise with all-core overclock it went up ~15%, and core clock went from 4000 to 4350 (4400 unstable), using the latest BIOS with 1006 AGESA. Framerates went from 55 to 54 FPS (GPU-limited). In my opinion, a +15% (synthetic) performance with a similar RAM OC and less FPS is $300 wasted on this side-grade, with a zero chance of a newer AMD AGESA or Asus BIOS to fix the IMC issues. Should've kept the Taichi.
I think its that this board just sucks with memory OC. Better IMC helps a bit but this board limits to lower speeds than many other boards. Anyway i got this board for cheap so i dont think its bad at all for the price.

Why bother upgrading if you play GPU limited? I play more CPU limited games or low graphics to push high fps so for me going from 1600x to 3800xt was big upgrade.

Edit: After pretty long time tweaking it looks like cant make 3600 on ram fully stable at least with good timings, so now im using 3533.
 

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>^o.o^<___/
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157 Posts
I just got 64GB as four dual rank DDR4 running at 3800-16, with 1:1 fabric:memory clocks on this board. I also thought this board was the limiting factor, but apparently it is not.
This guide helped me. I was hesitatnt to try higher frequencies as 3400, 3466 and 3533 wouldn't boot, but with setting ProcODT to 48 Ohm and the recommended 18-22-22-42 it booted at 3600, and then 3800-16.
 

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>^o.o^<___/
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157 Posts
I found that the latest BIOS 5603 from Asus has a bug: it reads temperature for CPU fan off motherboard sensor, not off the CPU sensor.
This causes low fan RPM during high CPU loads with Zen2. I haven't had this issue with Zen1.
This bug may degrade either Zen2 CPUs (or more likely just degrade the thermal paste), so I plan to email @asus about this bug.
A workaround is proposed for consideration below:
1) use HWINFO64 to find motherboard temperature corresponding to a high load (CPU-Z stress test)
2) in BIOS, under Monitor-Qfan_configuration, set fan curve to manual with 100% fan corresponding to the temperature 4-5° below what you just recorded
3) set fan lower temperature to several degrees above room temperature and fan around 40-60% to keep fan noise down
This way CPU cooling fans do rev up with CPU load, albeit with some delay.
Example below.
2517060
2517061

edit: others reported the same bug since 5220 BIOS. No wonder I haven't seen this as I used 5008 (which allows Gen 4).
 

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Registered
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27 Posts
Has anybody experienced any sound crackling/popping with this board? I am using the latest drivers from the manufacturer website but for some reason get the occasional faint crackle and pop in multiple games. I even purchased new headphones and formatted my Windows copy to rule those out so it appears to be the board
 

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>^o.o^<___/
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157 Posts
As I wrote, CPU fans don't spin up under load with 5603.
BIOS 5603 ... reads temperature for CPU fan off motherboard sensor, not off the CPU sensor.
This causes low fan RPM during high CPU loads with Zen2.
That's not good since CPU fans don't realize the CPU is hot.

Asus suggested to reflash 5601 and 5603, which made no difference. Now they suspect hardware issue offering to RMA the board. I'd rather not mess with a complete disassembly and RMA because I believe this is not with hardware as fans work fine with Ryzen1700 on the same board, and HWINFO64 confirms the sensors do work on both Ryzen3700X and on this motherboard.

Please check and report for your boards (if you have Zen2 cpu and 5601 or latest 5603 BIOS) whether your CPU fans do spin up promptly under load. I used HWINFO64 to watch motherboard sensor and CPU sensor, and CPU-Z to stress CPU for a minute or two.

View attachment 2517060
 

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Registered
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Hello,

Any tutorial to downgrade the bios?
Grab AFUDOS.exe. I rename my BIOS files removing "PRIME-X370-PRO-ASUS" from the file name, just leaving the version number (for example PRIME-X370-PRO-ASUS-0902.CAP becomes 0902.CAP).

This is the way I do it, and it has always done the trick. You can read up on the individual switches to figure out what they do, I can't remember, I just remember putting it together and it taking a try or two to get it to work.

AFUDOS 0902.CAP /x /p /b /n /k
 

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Registered
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9 Posts
As I wrote, CPU fans don't spin up under load with 5603.


That's not good since CPU fans don't realize the CPU is hot.

Asus suggested to reflash 5601 and 5603, which made no difference. Now they suspect hardware issue offering to RMA the board. I'd rather not mess with a complete disassembly and RMA because I believe this is not with hardware as fans work fine with Ryzen1700 on the same board, and HWINFO64 confirms the sensors do work on both Ryzen3700X and on this motherboard.

Please check and report for your boards (if you have Zen2 cpu and 5601 or latest 5603 BIOS) whether your CPU fans do spin up promptly under load. I used HWINFO64 to watch motherboard sensor and CPU sensor, and CPU-Z to stress CPU for a minute or two.

View attachment 2517060
Thanks for the info! My board is behaving the same, I'm on 5601 and a R3600.

Has anyone flashed 5606 and can confirm if the issue is still present?

Edit: Flashed it myself, issue still there it seems. Other than that it works fine.
 

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Registered
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91 Posts
It still is on 3000 and later AMD ryzens, with high latencies and iffy RAM support. I just replaced a 1700 with 3700X in hopes for a better performance. Well, the memory (gskill 3600-16 sticks) went from 3000-14 to 3333-16. Anything higher than 3333 and it doesn't even POST into BIOS, regardless of ProcODT, and RAM or SOC voltages or timings. Performance-wise with all-core overclock it went up ~15%, and core clock went from 4000 to 4350 (4400 unstable), using the latest BIOS with 1006 AGESA. Framerates went from 55 to 54 FPS (GPU-limited). In my opinion, a +15% (synthetic) performance with a similar RAM OC and less FPS is $300 wasted on this side-grade, with a zero chance of a newer AMD AGESA or Asus BIOS to fix the IMC issues. Should've kept the Taichi.
Did you try going much higher? My Taichi won't post anything between 3000 and 3600 for some reason, so I thought I was stuck at 3000 until one day I randomly decided to try 3600.
 
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