Ryzen 3900X thread

Awahwah · 13 Mar 2020 at 20:58

lnoton said:
^^agreed.

Makes you wonder what the point of all these high quality mobosand super duper vrms are for. I guess just for fun and to make some extra cash.

I've don't done my ram. Running as xmp with minor tweaks from iusmus. I tried fast but it want stable, but I didn't do the ohm settings.

Ready for 4000 series with 32 cores

Skynet5 · 13 Mar 2020 at 21:01

Awahwah said:
Ready for 4000 series with 32 cores

One can hope our investments give us some decent longevity.

Jamin280672 · 13 Mar 2020 at 21:02

Awahwah said:
Ready for 4000 series with 32 cores

We're not got to get 32 cores on RyZen 4000, they will stick to 16 cores, but we'll see IPC gains and probably get the 5ghz+ that everyone was expecting with RyZen 3000

If we got 32 cores at the end of this year, there would be a lot of unhappy Threadripper users, especially with the prices of them.

tommoT.Striker · 13 Mar 2020 at 21:11

That may well be true, on my 3900x when I had it, could do 4.2ghz at 1.32v, If I went lower any all core load would AVX/AVX2 would reset the machine. Don't know if the newer chips can run at that voltage on even avx2 loads.

Brizzles · 13 Mar 2020 at 23:25

Jamin280672 said:
You may of passed Cinebench 20 but I can tell you right now, your chip isnt stable, I can tell straight away by that score, its too low for 4.3ghz, mine at 4.3ghz with the same ram timings as you scores 7768 and needs 1.33v to do that, 100% stable, after running that for a week or 2 though I soon figured out that there really is no point overclocking these, and just leave it at stock, tweak your ram and let PBO do its thing.

Reached the same conclusion that there is little to no gains to be had in real terms.

Currently running ;

Cores - Auto
Normal Voltage -.150v ( Gigabyte Auto voltage keeps the chip at around 1.4v all the time for some reason) which gives an average core voltage of 1.26
PBO Enabled
1usmus Universal power plan

Scores in CB20 are ~7150, so about par for the course

Panos · 14 Mar 2020 at 01:42

Brizzles said:
Reached the same conclusion that there is little to no gains to be had in real terms.

Currently running ;

Cores - Auto
Normal Voltage -.150v ( Gigabyte Auto voltage keeps the chip at around 1.4v all the time for some reason) which gives an average core voltage of 1.26
PBO Enabled
1usmus Universal power plan

Scores in CB20 are ~7150, so about par for the course

1usmus powerplan to work, requires PBO OFF. But works well with XFR ON.

Jamin280672 · 14 Mar 2020 at 04:40

Brizzles said:
Reached the same conclusion that there is little to no gains to be had in real terms.

Currently running ;

Cores - Auto
Normal Voltage -.150v ( Gigabyte Auto voltage keeps the chip at around 1.4v all the time for some reason) which gives an average core voltage of 1.26
PBO Enabled
1usmus Universal power plan

Scores in CB20 are ~7150, so about par for the course

Your single core speeds will be much faster at stock than they were at overclocked settings too, it will be boosting single to 4.5-4.6ghz, where as before you locked it at 4.3ghz, you can test this in CPU-z benchmark.

Do you have C States and AMD Cool & Quiet enabled in the bios ? the voltage should drop whilst its idle, however, in the beginning......god crea.......oh wait wrong story, I had an app that loaded with windows that was constantly polling, so the only thing you can do is restart windows, open CPU-z and watch your core speed and voltage, then one by one, close each running app in the system tray, leave about 10 seconds between each one you close, dont move the mouse or touch anything, just watch CPU-z, you'll soon find out which one is constantly bothering the CPU when you close it, the core speed and voltage will drop.

Brizzles · 14 Mar 2020 at 05:00

Jamin280672 said:
Your single core speeds will be much faster at stock than they were at overclocked settings too, it will be boosting single to 4.5-4.6ghz, where as before you locked it at 4.3ghz, you can test this in CPU-z benchmark.

Do you have C States and AMD Cool & Quiet enabled in the bios ? the voltage should drop whilst its idle, however, in the beginning......god crea.......oh wait wrong story, I had an app that loaded with windows that was constantly polling, so the only thing you can do is restart windows, open CPU-z and watch your core speed and voltage, then one by one, close each running app in the system tray, leave about 10 seconds between each one you close, dont move the mouse or touch anything, you'll soon find out which one is constantly bothering the CPU, when you close it, the core speed and voltage will drop.

C-states and cool n quiet are both enabled, as per the recommened when using 1usmus power plan.

Read all about polling skewing the voltages, and am happy that i have eliminated false readings, and just use CPU-Z and hwinfo. Voltage drops to .975 and averages 1.2X.

XFR settings are ; manual/300/230/230/manual/x4

I have just gone back into bios and manually disable PBO2

Load peak clock increased from 4.142 to 4.192
'Idle' peak clock increased from 4.541 to 4.567

which resulted in ~ 100 points less in CB20, despite ' marginally ' higher clock speeds ? Not too fussed about that but didn't expect a drop

Anyway, thanks for your help

LtMatt · 14 Mar 2020 at 08:39

Brizzles said:
C-states and cool n quiet are both enabled, as per the recommened when using 1usmus power plan.

Read all about polling skewing the voltages, and am happy that i have eliminated false readings, and just use CPU-Z and hwinfo. Voltage drops to .975 and averages 1.2X.

XFR settings are ; manual/300/230/230/manual/x4

I have just gone back into bios and manually disable PBO2

Load peak clock increased from 4.142 to 4.192
'Idle' peak clock increased from 4.541 to 4.567

which resulted in ~ 100 points less in CB20, despite ' marginally ' higher clock speeds ? Not too fussed about that but didn't expect a drop

Anyway, thanks for your help

Disable Spread Spectrum in the BIOS if your motherboard has that option exposed too for a small bump to clock speeds, id 4.567 will become 4.575mhz.

Skynet5 · 14 Mar 2020 at 10:08

LtMatt said:
Disable Spread Spectrum in the BIOS if your motherboard has that option exposed too for a small bump to clock speeds, id 4.567 will become 4.575mhz.

Oooh is that on gigabyte x570 boards. Will need to check later.

ebilcake · 14 Mar 2020 at 10:13

Just put together a 3900x system, so far so good but now I have to learn to tweak a completely different platform.... Not been with AMD for years.

For unknown reasons my Asus board set vcore to 1.45 be default.. I'm assuming default is 1.2 - 1.25?

Any basic tips for optimising performance I should know? Not going to overclock yet, best start with the basics..

Skynet5 · 14 Mar 2020 at 10:20

ebilcake said:
Just put together a 3900x system, so far so good but now I have to learn to tweak a completely different platform.... Not been with AMD for years.

For unknown reasons my Asus board set vcore to 1.45 be default.. I'm assuming default is 1.2 - 1.25?

Any basic tips for optimising performance I should know? Not going to overclock yet, best start with the basics..

Can you do an offset? 1.28v under load is a good average. 1.45 is fine if there is no load.

1usmus power plan and his settings seem to be all that is needed.

What are your cbr20 scores?

ebilcake · 14 Mar 2020 at 10:41

lnoton said:
Can you do an offset? 1.28v under load is a good average. 1.45 is fine if there is no load.

1usmus power plan and his settings seem to be all that is needed.

What are your cbr20 scores?

Not sure what you mean by offset..

1usmus power plan? is that in the bios?

Around 6600 right now, I'm sure it was higher yesterday, all I changed was the cvore voltage.

Skynet5 · 14 Mar 2020 at 10:48

ebilcake said:
Not sure what you mean by offset..

1usmus power plan? is that in the bios?

Around 6600 right now, I'm sure it was higher yesterday, all I changed was the cvore voltage.

On giga x570 you can set voltage to Normal and apply a negative voltage. I have - 0.1v

https://www.guru3d.com/files-details/1usmus-custom-power-plan-for-ryzen-3000-download.html

3900x should be getting 7200. Temps?

ebilcake · 14 Mar 2020 at 10:56

lnoton said:
On giga x570 you can set voltage to Normal and apply a negative voltage. I have - 0.1v

https://www.guru3d.com/files-details/1usmus-custom-power-plan-for-ryzen-3000-download.html

3900x should be getting 7200. Temps?

OK, since all I changed was voltage I've just tried a few settings.

1.25V - 6667
1.30V - 6854
1.35V - 7226

Interesting, package temp reached 72C at 1.35C

EDIT: after installing that power profile (Performance), it's now at 7348

ebilcake · 14 Mar 2020 at 11:16

Also what should I setting FCLK and SOC to? I'm using 4000 memory and it's set to auto, should I downclock the memory and adjust FLCK manually? What's going to optimal? :confused:

How do I even check what FCLK is set to on auto?

Skynet5 · 14 Mar 2020 at 11:26

ebilcake said:
Also what should I setting FCLK and SOC to? I'm using 4000 memory and it's set to auto, should I downclock the memory and adjust FLCK manually? What's going to optimal?

How do I even check what FCLK is set to on auto?

I'd set fck manually to 1800 and run your memory at 3600 cl16 and test for the moment.

ebilcake · 14 Mar 2020 at 11:54

lnoton said:
I'd set fck manually to 1800 and run your memory at 3600 cl16 and test for the moment.

Thanks, I'll try that. Memory is from my old Intel system, it's not rated to do cl16.

Panos · 14 Mar 2020 at 15:36

ebilcake said:
Just put together a 3900x system, so far so good but now I have to learn to tweak a completely different platform.... Not been with AMD for years.

For unknown reasons my Asus board set vcore to 1.45 be default.. I'm assuming default is 1.2 - 1.25?

Any basic tips for optimising performance I should know? Not going to overclock yet, best start with the basics..

Set it it Auto and ignore. The CPU will do decide how much power it will draw and when based on what AMD feels is safe at any point in time.

Setting power manually you either push too much power or starve the CPU. The only thing that works is offset between -0.08 to -0.1. But generally rule of thumb leave the CPU alone if you plan to play games. Just activate XFR, set the BIOS as per 1usmus power plan and you will see the CPU running at 4550-4600 (cooler depending) at 100% loads on the top 2 cores on CCD0 and the rest working depending how much load they have. On single core heavy games, the 4650Mhz at 100% constant load (with good cooling) should be easy to achieve.

If you want to push the performance of the CPU to maximum all core speeds at 100% full load, do not go over 1.27v on manual voltage as the absolute maximum. However ask yourself. You will sacrifice 15% better gaming performance for 8% better all core performance?

LiE · 14 Mar 2020 at 15:55

I tired the 1usmus profile and my score in r20 dropped from 7248 to 7115.

I did run about 5c cooler on the run though around 62c max.

Changed the settings back - enabled PBO in BIOS and using Ryzen balanced power plan brings the score back up to 7282.