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Ryzen 3900X thread

arc@css said:
Cheers, puts my mind at ease. :)
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As for playing around with the memory, although I haven't gotten into the timings yet, but pushing it up from factory speeds was clearly a necessity. Everything felt 'off' at stock especially when gaming (multiplayer was very noticeable).
Bloody touchscreen phones... Bah humbug! :D
 
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MyBrains said:
Is there much performance difference though?

I usually leave RAM as is but now i have the 3900X cool and stable i need something else to play around with :D
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Hell yeah. Moving from 3600C16 factory XMP to 3800C16 with tight subtimings might not be too "much" fps on some games but on others, especially those pushing the CPU threads to 100% the perf is pretty substantial.

Some games we see all way to 30% more fps.
 
MyBrains said:
Cheers i'll have a look at it over xmas :)
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Yesterday, updated the bios to a new one Asrock has out, with some memory changes.
At native 3600C16 was getting 70ns. Tweaked at 3800C16 was getting 63ns. That might not seem much and on many games is irrelevant eg WoWarships, WOT, Division 2 didn't moved at all.

However on X4 and ESO which are heavily CPU bound games, the performance went up. X4 got over 15% and on ESO over 30% (hitting 90fps in same towns from 60ish last night).
 
arc@css said:
As for playing around with the memory, although I haven't gotten into the timings yet, but pushing it up from factory speeds was clearly a necessity. Everything felt 'off' at stock especially when gaming (multiplayer was very noticeable).
Bloody touchscreen phones... Bah humbug! :D
Click to expand...

I pushed mine to 3000mhz yesterday ( more to come I hope, just don't know if the ram can ). But good to know it makes a nice difference. Will certainly need a bios update too at some point, but just content with my system working for now lol.
 
Minstadave said:
I struggle to beat 7k on my X570 Taichi with RAM at 3733mhz. Tried closing iCue. No difference.

All core load sees clocks drop below 4ghz some of the time, much lower than my 3700X.TDC limit seems to be the issues, can't go above 100% without a manual OC. Package power doesn't go over 115W in Cinebench.

Dialling in a manual overclock is much better and lets you go over the TDC limit. Running 4.35 on CCD0 and 4.2 on CCD1 gets me to almost 7.5K.
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One thing, VDDG & VDDP power is directly related to the performance. If you put more power than needed to these, the performance drops and by a lot.
At XMP 3600C16 everything stock, I can get 7230 with the 3900X.
3800C16 I get 7283, might not seem much but on CPU bound games matters a lot going from 70ns to 63ns, especially X4 & ESO, is like I got a new system.
However if I go over 0.950mv on VDDG and 0.900mv on VDDP, CB20 performance drops to 6800 range. So you need to keep those two values pretty tight to the lowest possible value to have the system stable.

Praz94 said:
Wonder what happened to Anand Sharma to get a perma ban?
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Yeah saw that and have no idea. To get perma ban has to write something outrageous ridiculous.
 
I recently bought a 3900x off these 'ere forums and having some spare time on my hands over Christmas decided to just give the CPU and Memory a bit of quick overclock to see what I could get out of it.

Asus X470 Prime Pro - Latest BIOS (5406 with 1.0.0.4 Patch B)
32Gb (2 x 16) GSkill B-Die Trident Z 3200C14 - Overclocked to 3600 16-16-16-32 (Safe Timings) @ 1.35v - Can't get much over this , 3800 @ 1:1 seems a bit elusive.
Water cooled (Monoblock VRM + CPU and a GPU)

All Core Overclock:
3900x - All core 4.35Ghz @ 1.30v (will do 1.275 but extended stability testing sometimes fails)
Max temp whilst benchmarking = 81 degrees, idle is 35 degrees with case internal temp of 34 degrees.
Cinebench R20 - 7780 / 505

PBO
I struggled to get anything useful, using Ryzen Master I can't raise the EPT/PPT limits etc, so resorted to the BIOS, but following guides for low end Asus boards just seemed to raise temps considerably with no gain.,
Cinebench R20 - 7065 / 518
Max temp whilst benchmarking = 82 degrees, idle is 37 degrees with case internal temp of 34 degrees.


It seems super stable (Prime95 + CB R20 + AIDA64 Stress Testing has been fine so far, several hours worth in total), not sure whether to just leave it all core overclocked, or put the CPU back to stock, I'd like to enable PBO but struggling a bit to get anything 'good' out of it.
 
arc@css said:
I just got home and booted up my system, and straight away I thought it seemed unresponsive...

96rMNmQ.png


I did a restart and all is good now but I wonder why that happened?

WcfvUMU.png
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I've seen others report this issue on the Gigabyte subreddit, it occurs only very rarely and I don't know whether it is a Windows bug, an AGESA bug or a Gigabyte BIOS bug. I'll keep an eye out for it on my Gigabyte Master.
 
Updated the bios of my Asus Tuf x570 Plus. Noticed a bit more heat from the CPU whilst doing very little, but I guess that's normal. O.C the ram to 3200mhz so slowly moving that forward. So far so good enjoying the new system and power upgrade over my 2500k haaa.
 
gupsterg said:
~12hrs run of Kahru RAM Test using 3800MHz 1:1:1 on R9 3900X.
Rossi~ said:
Can't access the link but I believe ya ;)
What overall configuration?
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Hi ya chap, sorry link was incorrect and corrected it now. OS tools used in WMV don't show:-

DFE Read Training [Enable]
FFE Write Training [Disable]

So here is ZIP of settings txt, etc.
 
OK, A bit more tweaking!

3900x - 4.4Ghz All Core @ 'Auto' Voltage (seems stable at manual 1.35v, but found 'auto' so far runs slightly cooler overall.
Memory - 3800 16-16-17-16-32 1usmus 'Safe' Timings and IF @ 1900Mhz seems to be OK

CB R20 - 7874 - Max Temps 81 Degrees
Aida64 Stress Testing, after 30 minutes - ~84 degrees (fluctates between 82 and 86)

possibly a step too far, I might knock it back to 4.35 and drop the voltage back to 1.3v, it seemed that bit cooler etc and can't fault stability.
 
Demon said:
OK, A bit more tweaking!

3900x - 4.4Ghz All Core @ 'Auto' Voltage (seems stable at manual 1.35v, but found 'auto' so far runs slightly cooler overall.
Memory - 3800 16-16-17-16-32 1usmus 'Safe' Timings and IF @ 1900Mhz seems to be OK

CB R20 - 7874 - Max Temps 81 Degrees
Aida64 Stress Testing, after 30 minutes - ~84 degrees (fluctates between 82 and 86)

possibly a step too far, I might knock it back to 4.35 and drop the voltage back to 1.3v, it seemed that bit cooler etc and can't fault stability.
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Decent chip you got hey. ;)
 
LtMatt said:
Decent chip you got hey. ;)
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Thanks again Matt! Not bad! I don't generally push OC'ing.. (Will have it back on stock shortly).
It just managed a stable 4.45Ghz @ 1.375v - CB R20 7951!

I bought some acid to gently remove the LM residue and immediately lowered temps by 5 degrees across the board, so very happy!

The best news is that the better memory controller on the CPU works well with my 3200C14, now that's at 3800C16 with tightened (SAFE) timings it's really a free bit of extra performance.
 
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For those interested and after extensive fiddling to get most out of their CPU for gaming, here are my findings with the X570 Taichi and the 3900X

a) Set your settings in bios as per 1usmus power plan v1.0 (aka PBO = disabled, prefered cores etc)
b) Set XFR (on X570 Taichi) settings as per Buildzoid video.
c) Configure your RAM as per DRAM Calculator. (3800C16 in my case)
d) Install Chipset drivers
e) Install 1usmus powerplan.
f) Optional. After all is successful and stable consider to raise the bus to 100.1 initially and gradually to 100.4

With a Noctua D15 2 cores hit 4600-4650 at constant 100% core loads (gaming for hours) on CCD0 both pushed at the same time. The other 4 cores on CCD0 go around 4450-4550. CCD1 4375-4400 is the max you will get on all 6 cores.
However these are not settings for benchmarks like CB20, where the CPU is limited to all core 4075-4100Mhz due to the nature of the load, if you chase numbers go for all core overclock, it but you lose 5%-8% performance in games and might damage the CPU in the long term.
 
Minstadave said:
How do you enable xfr on the Taichi? I must have missed that setting, I’ve watched the Buildzoid bios review too a few weeks back.
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Advanced\AMD CBS\NBIO Common Options\XFR Enhancement\Accepted

Set Precision Boost Override Manual
PPT Limit 999
TDC Limit 999
EDC Limit 999
Overdrive Scalar - Manual
customized - 5x

However make sure the actual PBO is OFF that's under
Advanced\AMD Overclocking\Accept\Precision Boost Overdrive
Set Precision Boost Overdrive - Disabled

Wording might seem weird, especially why we are turning on boost under the XFR settings but disabling it on the actual PBO settings. But works like a charm with the 1usmus powerplan :)

And that because I am trying to push the system to it's limits because X4 is hammering hard 2 cores (constant 100% load) and lightly 4-8 cores (60-80% load) depending the area we are in.
eg quiet areas is pretty low, on battlefield areas where there are dozens of ships per side it cranks the core usage up.

So with the above settings I get a 4600 & 4650 2 core 100% hammering for hours, while the rest are boosting as they go. Which is the point of gaming settings, as the system considers them light threaded applications.
 
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