Ryzen 3900X thread

Yaayuh! · 16 Aug 2019 at 08:27

Illuminist said:
4.1 all core and 4.25 single, not that im that happy about it though. So I all core manually clocked it to 4.35ghz

I assume that's with heavy load? What's it like with light load? i.e. browsing etc

Zeed · 16 Aug 2019 at 12:08

TrM said:
I don’t get there binning process tbh the 3800x prebinned at 4.3ghz at 1.3v but the 3900x is 4.2ghz at 1.25v.

I think I got lucky with my cpu it’s stable at 4.3ghz at the1.2875v which if it was a 3800x on there site it would have been a top 3800x but since it’s a 3900x I’m. It sure lol

Theirs bins are rock solid on the speeds they sell. They wont tell whats the duration but Hours of non-AVX Prime95, AVX Prime95, and Intel Linpack need to pass.

My 2700x binned for [email protected] was stable running all core 4275 all core with 3533cl14 passing hour of prime ibt and realbench. So they must test for longer than 1 hour max xonstant load.

humbug · 16 Aug 2019 at 12:11

Zeed said:
Theirs bins are rock solid on the speeds they sell. They wont tell whats the duration but Hours of non-AVX Prime95, AVX Prime95, and Intel Linpack need to pass.

My 2700x binned for [email protected] was stable running all core 4275 all core with 3533cl14 passing hour of prime ibt and realbench. So they must test for longer than 1 hour max xonstant load.

This, i'm also looking at voltages, 4.2Ghz are all well under 1.3v, that's a golden chip, how many here are AVX prime95 stable at 4.2Ghz 1.25v?

I can't even get mine Cinebench stable at 4.2Ghz 1.4v

Illuminist · 16 Aug 2019 at 12:52

humbug said:
This, i'm also looking at voltages, 4.2Ghz are all well under 1.3v, that's a golden chip, how many here are AVX prime95 stable at 4.2Ghz 1.25v?

I can't even get mine Cinebench stable at 4.2Ghz 1.4v

Mine is stable at 4.35 1.35v or 4.3 1.3v, that's good?

Zeed · 16 Aug 2019 at 12:52

humbug said:
This, i'm also looking at voltages, 4.2Ghz are all well under 1.3v, that's a golden chip, how many here are AVX prime95 stable at 4.2Ghz 1.25v?

I can't even get mine Cinebench stable at 4.2Ghz 1.4v

If i remember when I'w put heavy AVX load stock 3900x was running 4050mhz and pumping 1.28 to stay stable.

humbug · 16 Aug 2019 at 13:10

Illuminist said:
Mine is stable at 4.35 1.35v or 4.3 1.3v, that's good?

AVX Prime95? yes. It is.

Illuminist · 16 Aug 2019 at 13:12

humbug said:
AVX Prime95? yes. It is.

Sweet!

@Zeed my bro, all my chiplets and chips are 4.35 no problem I don't seem to have a lesser ccx!

Zeed · 16 Aug 2019 at 15:53

Illuminist said:
Sweet!

@Zeed my bro, all my chiplets and chips are 4.35 no problem I don't seem to have a lesser ccx!

silicone lottery my last core nr12 is worst,. I'ts one that cant get 4400 max is 4375 on it.

Apache14 · 16 Aug 2019 at 16:37

With the X570 Master im now seeing 4,550Mhz boosts on a few of the cores in the 1st CCX on my 3900X

On the X370 gaming K5 it never pushed passed 4,250Mhz

All default setting (just loaded XMP for RAM) + latest AMD drivers

AStaley · 16 Aug 2019 at 16:56

Apache14 said:
With the X570 Master im now seeing 4,550Mhz boosts on a few of the cores in the 1st CCX on my 3900X

On the X370 gaming K5 it never pushed passed 4,250Mhz

All default setting (just loaded XMP for RAM) + latest AMD drivers

What cooling do you have?

Apache14 · 16 Aug 2019 at 17:16

AStaley said:
What cooling do you have?

Custom loop, just for CPU 240 radiator and and D5 pump / res combo.

Probably slightly better cooling than a 240 AIO.

EDIT : This https://imgur.com/gallery/h1h3x loop with the 3900X

AStaley · 16 Aug 2019 at 18:39

Nice looking build

Saltcreek · 16 Aug 2019 at 21:53

Just got my 3900x up and running. What software should I use to monitor, OC, etc?

robfosters · 16 Aug 2019 at 22:11

Saltcreek said:
Just got my 3900x up and running. What software should I use to monitor, OC, etc?

HW info

Skynet5 · 16 Aug 2019 at 22:38

In stock if you want to buy with a b450 board. Big online store.

NuScorpii · 17 Aug 2019 at 19:28

What's the best way to check how high a single core will boost? I've tried running Prime95 with a single worker expecting it to run on the fastest core. However Ryzen Master shows that it always runs on core 10 which is the slowest core of CCD1 CCX1. That runs at about 4.15GHz. If I run with 12 workers they all run at 4.05GHz and EDC is at 100% of 140A. Haven't set any of the overclocking controls yet, everything is set to default / auto. Running on an Asus x570 TUF Gaming with 32GB (2x16) @3733 cl16.

Illuminist · 17 Aug 2019 at 19:50

NuScorpii said:
What's the best way to check how high a single core will boost? I've tried running Prime95 with a single worker expecting it to run on the fastest core. However Ryzen Master shows that it always runs on core 10 which is the slowest core of CCD1 CCX1. That runs at about 4.15GHz. If I run with 12 workers they all run at 4.05GHz and EDC is at 100% of 140A. Haven't set any of the overclocking controls yet, everything is set to default / auto. Running on an Asus x570 TUF Gaming with 32GB (2x16) @3733 cl16.

I use cpu z, but that always uses core 1.
You might be better on auto oc or pbo on ryzen master so you can increase your edc and the other 2 limits

NuScorpii · 19 Aug 2019 at 10:18

Illuminist said:
I use cpu z, but that always uses core 1.
You might be better on auto oc or pbo on ryzen master so you can increase your edc and the other 2 limits

I updated the AMD chipset drivers and that helped with allocating of cores. In Cinebench R15 using single thread it now switches between the fastest and second fastest cores on CCD0 CCX1. Had to edit the settings in the BIOS to increase EDC and TDC, now with PBO / auto oc it will hit a constant 4.4GHz in single threaded workload. Multithreaded it will now almost immediately hit max temp 95C and throttle back from 4.1GHz to 3.8GHz. I'm guessing the stock cooler is not up to this?

There are two motherboard connections for CPU power, an 8 pin and a 4 pin. My PSU only has an 8 pin connector. Is it worth getting a new PSU with the extra 4 pin too?

MartinPrince · 19 Aug 2019 at 10:31

Shac said:
Be aware same board and setting to xmp did not increase my ram volts to 1.35 do it manually.

Thanks for this, because I read your post it was a a quick fix for me when I was having random crashes even in the bios. Even when XMP was not selected the DRAM voltage was only set to 1.22v instead of 1.35v. Once I manually set it correctly then all good. My system:

3900X at stock with Noctua NH-D14
MSI Tomahawk with 22th July bios 7C02v1A
Corsair Vengeance 3200Mhz C16
MSI 1060 GPU

MartinPrince · 19 Aug 2019 at 10:35

NuScorpii said:
There are two motherboard connections for CPU power, an 8 pin and a 4 pin. My PSU only has an 8 pin connector. Is it worth getting a new PSU with the extra 4 pin too?

Is your PSU non modular? You should really be plugging into all the power connectors on the motherboard.