Ryzen 9 3900X + Gigabyte B450 ITX【Mac OS Catalina】

Ryzentosh

New member
May 5, 2020
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CPU:Ryzen9 3900X
CPU Fan : NZXT KRAKEN X63
PC Case : Streacom DA2 Mini
Mother Board:GIGABYTE B450 I AORUS PRO
Graphic Board:MSI Radeon RX 570 ARMOR 8G OC
Memory:G.Skill DDR4 3600 16GBx2
SSD:Sandisk M.2 500GB TLC

Ryzen9 3900X で Mac OS X Catalinaのインストールに成功しました
OCで4.3GHzで起動できました
定格3.8GHz〜4.2GHzで安定動作をしています
マザーボード内臓のWiFiモジュールを外さないと
Bluetooth USBアダプタを認識してくれません
それ以外は問題なく動作してます
Adobe Photoshop 2020・Lightroom CC Classic 9.1 は問題なく動作しています

[Geekbench5] Single-Core Score : 1241 / Multi-Core Score : 9643
https://browser.geekbench.com/v5/cpu/2263119

F926821F-367E-4534-9A5A-2D657D5A7809.jpeg
 
Last edited:

Osxten

New member
May 24, 2020
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Can you explain more about what is working and not working. I am nearing the end of my parts gathering process. Just need motherboard and trying to make sure that almost everything works. Does your sleep work? Microphone?


Sent from my iPhone using Tapatalk
 

Ryzentosh

New member
May 5, 2020
8
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Can you explain more about what is working and not working. I am nearing the end of my parts gathering process. Just need motherboard and trying to make sure that almost everything works. Does your sleep work? Microphone?


Sent from my iPhone using Tapatalk
I have to remove the built-in WiFi module Does not recognize the Bluetooth USB adapter.
There is no problem other than the Bluetooth function.
Adobe products are also working fine.
 

Aluveitie

Member
May 2, 2020
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Did you overclock to 4.2 GHz? Multi-Core Score seems a little low, that should be around 11-12k for a 3900X.
 

Aluveitie

Member
May 2, 2020
111
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It's not terrible for practical use, but might indicate an issue that could be optimized.

I don't exactly now if the infinity fabric scaling is defined by the chipset or the CPU. Because on the previous gen the divider goes from 1:1 to 1:2 at a frequency of 1800MHz I think. So your 3600 RAM might result in a 1800 MHz fabric clock, if so then setting it to 3400 or 3200 might even improve performance.
 

Ryzentosh

New member
May 5, 2020
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It's not terrible for practical use, but might indicate an issue that could be optimized.

I don't exactly now if the infinity fabric scaling is defined by the chipset or the CPU. Because on the previous gen the divider goes from 1:1 to 1:2 at a frequency of 1800MHz I think. So your 3600 RAM might result in a 1800 MHz fabric clock, if so then setting it to 3400 or 3200 might even improve performance.
Thank you. I changed to 3466/3200, but there was no big change.
 

neon-midnight

New member
May 14, 2020
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It's not terrible for practical use, but might indicate an issue that could be optimized.

I don't exactly now if the infinity fabric scaling is defined by the chipset or the CPU. Because on the previous gen the divider goes from 1:1 to 1:2 at a frequency of 1800MHz I think. So your 3600 RAM might result in a 1800 MHz fabric clock, if so then setting it to 3400 or 3200 might even improve performance.
Since all Ryzens are SoCs, it's defined by CPU logic alone. Please note that 1800 mhz is optimal and upper limit of what FCLK can achieve per AMD spec is 3733 Mhz divided by two (good samples can go up to 3800 Mhz (FCLK 1900)). Therefore, there is no reason to go down from 3600 Mhz.

@Ryzentosh In terms of OC, anything above 3700X is already almost maxed out frequency wise. Unless you are maximising multi-thread performance ONLY, it is optimal to disable OC and leave CPU on full auto. Additionally, you can enable PBO to lift up the power limits but since you are using B450 motherboard with 3900X, it is advised to do so only if VRM radiators have a good airflow.
 
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Ryzentosh

New member
May 5, 2020
8
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Since all Ryzens are SoCs, it's defined by CPU logic alone. Please note that 1800 mhz is optimal and upper limit of what FCLK can achieve per AMD spec is 3733 Mhz divided by two (good samples can go up to 3800 Mhz (FCLK 1900)). Therefore, there is no reason to go down from 3600 Mhz.

@Ryzentosh In terms of OC, anything above 3700X is already almost maxed out frequency wise. Unless you are maximising multi-thread performance ONLY, it is optimal to disable OC and leave CPU on full auto. Additionally, you can enable PBO to lift up the power limits but since you are using B450 motherboard with 3900X, it is advised to do so only if VRM radiators have a good airflow.
Thank you. I want to suppress heat generation because it is assembled in the case of mini ITX.
Operate automatically, apply XMP at level 1 for memory, and operate at 3600.