Ryzen 3900X can't clock 1800MHz Infinity Fabric with 3600 CL14. Disappointed with Ryzen.

[KhakiKukhi]

My Ryzen 3900X that I just recently purchased can't clock to 1600MHz on Infinity Fabric.
When I clock to 1600 IF with 3600 memory, testing Cinebench R20 causes my PC to black-screen and reboot.
1400 IF with memory at 3600 is stable.
Memory is Ballistix Elite 3600 CL14.
CPU is running with stock cooler.
Temps do not exceed 85C.
Please help.


Here are my PC Specs:

• CPU: Ryzen 9 3900X
• Motherboard: Gigabyte X570 Aorus Xtreme
• RAM: Crucial Ballistix Elite 3600 CL 16 (2 x 8Gb) (Clocked at 3600 CL14)
• CPU Cooler: Wraith Prism (Stock cooler)
• PSU: Cooler Master V1000 80+ Gold (Replaced once)
• GPU: Nvidia GeForce GT 705 (Pulled this out of a old Dell somewhere, still waiting for my graphics card to arrive)
• OS: WIndows 10 Pro Latest Build (I need Win 10 Pro for my workloads)

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Here's what I've tried:

• I have updated all drivers and BIOS to the latest version.
• Replaced my PSU (Replaced Cooler Master V1000 with another V1000)
• Updating and trying both main and backup BIOS.
• Tested both ram sticks individually in all 4 RAM slots, failure persists.
• Test both ram sticks in A1, B1 configuration and A2, B2 configuration, failure persists.

___

Additional information:

• I have plugged in both 8-pin CPU power.
• Bios version: Gigabyte F3
• Benchmarks and stress test FAIL using XMP 3600 CL16 (1800 Infinity Fabric) but PASS using 2666 (1333 Infinity Fabric)
• CPU temperatures do not exceed 85C.
• CPU throttles at 80C.

UPDATE: I've managed to achieve stability at 1767 Infinity Fabric and 3600 memory.

 

[eidairaman1]

Pebcak

Need complete system specs...

 

[KhakiKukhi]

Pebcak

Need complete system specs...

Updated system specs.

 

[eidairaman1]

I wouldnt expect too much from a Gigabyte board.

Look at your bios, read the manual, see what volts are needed for if, loosen the ram times a bit too.

@Mussels @Bones @Mr.Scott @AlienIsGOD

 

[KhakiKukhi]

I wouldnt expect too much from a Gigabyte board.

Look at your bios, read the manual, see what volts are needed for if, loosen the ram times a bit too.

I did. I tested memory clocks starting at 1.3v and pushed it to 1.45v.
I tested 3600 CL16 with XMP.
I tested each ram stick individually on all 4 slots.
The memory is on the MB QVL.

Edit: Updated original posting.

 

[biffzinker]

When I clock to 1600 IF with 3600 memory, testing Cinebench R20 causes my PC to black-screen and reboot.

Have you checked to see if the Gigabyte X570 motherboard is increasing the voltage to the SoC/Northbridge with the increase to DDR4-3600/IF @ 1800 MHz that has the Integrated Memory Controller? It might be affecting stability if for some odd reason the motherboard doesn't bump the voltage. It should be doing it on its own with the setting at Auto.

 

[KhakiKukhi]

Have you checked to see if the Gigabyte X570 motherboard is increasing the voltage to the SoC/Northbridge with the increase to DDR4-3600/IF @ 1800 MHz that has the Integrated Memory Controller? It might be affecting stability if for some odd reason the motherboard doesn't bump the voltage. It should be doing it on its own with the setting at Auto.

You're right. I'll go check it out right now.

To confirm, it's the VDDCR SoC right?

Update: I've switched VCORE SOC from 1.1V to auto.

 

[flmatter]

Does it pass at 3000 and 3200 and only fail at 3600? Could be voltage as @biffzinker said

 

[KhakiKukhi]

Does it pass at 3000 and 3200 and only fail at 3600? Could be voltage as @biffzinker said

My ram ram fine at 3000, 3200, and 3600.
My IF can't go past 1767 or it'll black screen.

 

[flmatter]

Then I would side with @biffzinker and tweak the voltage for IF

 

[KhakiKukhi]

Then I would side with @biffzinker and tweak the voltage for IF

Sounds good.
How would I tweak the voltage for the IF?

 

[biffzinker]

Then I would side with @biffzinker and tweak the voltage for IF

Unfortunately there isn't a voltage option to set for Infinity Fabric if his board only offers these options.

My MSI board defaults to 1.030V at stock but if I increase the DDR4 clockspeed to 3466 MHz it gets adjusted to 1.15V.

 

[KhakiKukhi]

I tested again BIOS defaults + XMP. The IF is running at 1800 coupled mode. It still black screened and reset.

VDDCR SOC is always 1.1 in Ryzen Master.

 

[biffzinker]

I tested again BIOS defaults + XMP. The IF is running at 1800 coupled mode. It still black screened and reset.

Well then your 3900X might have a less than binned subpar I/O die that doesn't hit the higher clockspeed but I could be wrong. Infinity Fabric is runned between the 7nm CPU Cores die, and the 12nm I/O die but I have a hard time believing you ended up with a lemon.

 

[KhakiKukhi]

@biffzinker This is my IF 1767 bios settings. RAM is at 3600 CL14. FCLK is 1767, RAM is 1800.

 

[biffzinker]

@biffzinker This is my IF 1767 bios settings. RAM is at 3600 CL14. FCLK is 1767, RAM is 1800.

Pretty high voltage for the SoC so that shouldn't be the problem causing instability.

 

[KhakiKukhi]

Pretty high voltage for the SoC so that shouldn't be the problem causing instability.

Yeah. I've been doing this for almost 4 days now and I'm at my wit's end. I've tried a lot of things and visited lots of forums.
Do I just give up and accept IF @ 1767 or try to get a replacement?

 

[Deeveo]

@biffzinker This is my IF 1767 bios settings. RAM is at 3600 CL14. FCLK is 1767, RAM is 1800.

What kind of voltages do you get on CLDO VDDG/VDDP on settings that get you to Windows? You can see this with Ryzen Master. On Asus X570 TUF board auto setting gets these too high (on high IF frequency), which causes system instability or non bootable condition.

VSOC voltage seems to always show 1.1 on Ryzen Master, even if you manually adjust it. I'd use HWInfo to check actual value. That SOC voltage seems high.

 

[FinneousPJ]

Wait, does AMD spec say it should run at 1800?

 

[GamerGuy]

Well, I have the 3900X + X570 Aorus Xtreme as well, and I have mine at Mem Clock at 1667Mhz with Infinity Fabric coupled at same clock. I'm using XPG DDR4 D60G 3200 CL16 RAM...

 

[biffzinker]

Crucial Ballistix Elite 3600 CL 16 (2 x 8Gb) (Clocked at 3600 CL14)

I see you said your DDR4 Ballistix Elite is 3600 CL 16 but say your setting the CAS latency to 14. What happens when you set them to stock timings with CL at 16 with 3600?

Stock tmings are DDR4 PC4-28800 • 16-18-18

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[KhakiKukhi]

I see you said your DDR4 Ballistix Elite is 3600 CL 16 but say your setting the CAS latency to 14. What happens when you set them to stock timings with CL at 16 with 3600?

On stock settings with RAM at 3600 CL16 and IF 1800 fails.
RAM at 3600 CL16 and IF at less than 1800 passes.
Current settings with RAM at 3600 CL14 and IF 1767 passes.

What kind of voltages do you get on CLDO VDDG/VDDP on settings that get you to Windows? You can see this with Ryzen Master. On Asus X570 TUF board auto setting gets these too high (on high IF frequency), which causes system instability or non bootable condition.

VSOC voltage seems to always show 1.1 on Ryzen Master, even if you manually adjust it. I'd use HWInfo to check actual value. That SOC voltage seems high.

These are my stable settings.

UPDATE: I've set my SOC voltages to 1.1V.

 

[biffzinker]

On stock settings with RAM at 3600 CL16 and IF 1800 fails.
RAM at 3600 CL16 and IF at less than 1800 passes.
Current settings with RAM at 3600 CL14 and IF 1767 passes.


These are my stable settings.

Nvm me then, I thought something was maybe being overlooked.

 

[Ripcord]

i can tell your not running everything stock. your overclocking everything at the same time then blaming the memory controller. run everything stock then increase your infinity fabric and see if that's stable first. then try tighter memory timings then overclock the cpu. start again from scratch and see whats stable

 

[KhakiKukhi]

This is HWINFO with cinebench running in the background.