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

[Final_Fighter]

you are probably having average results because you bought into a new product. heck, i just got another first gen ryzen 5 1600x that can do 4.2ghz all core @1.44v its a mid 2018 production. also a 7 1700 that can do 4.2 all core at the same volts. probably should have bough into the platform after a year if you wanted better than average performance.

 

[KhakiKukhi]

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

I ran everything stock with my memory at 2666 IF 1333. It's stable.
I enabled XMP with memory at 3600 IF 1800. Not stable.
I even tried memory at 2666 FCLK 1800. Not stable.

you are probably having average results because you bought into a new product. heck, i just got another first gen ryzen 5 1600x that can do 4.2ghz all core @1.44v its a mid 2018 production. also a 7 1700 that can do 4.2 all core at the same volts. probably should have bough into the platform after a year if you wanted better than average performance.

I'm not looking for better than average performance. I'm looking for performance AMD themselves claimed would work.

 

[biffzinker]

This is HWINFO with cinebench running in the background.

What do you see for the temperature/voltage sensors?

There's no reason you shouldn't be able to overclock to IF @ 1800 MHz with DDR4-3600 but AMD does only specify 3200 MHz guarenteed which means a IF of 1600 MHz. My lesser binned 3600 was running uncoupled with the Auto setting of 1800 MHz when I checked it with Ryzen Master. Since I switched to the MSI B450 Tomahawk though the Auto setting works in relation to the DDR4 frequnecy.

 

[Deeveo]

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.

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

Looking at the pic I'd say motherboard is setting CLDO VDDG and VDDP voltages too high, find where you can set these on your bios and set both to 1V and see if it helps.

Edit. I couldn't get 1800+ IF on my X570 TUF + R5 3600 at first either, then I manually lowered these voltages and managed to get IF to 1866 stable, 1900 not stable on my proc tho.

Edit2. My specs are not up to date.

 

[KhakiKukhi]

What do you see for the temperature/voltage sensors?
View attachment 130558

View attachment 130559

Hey, I really appreciate you helping me out on this. Thank you.
Here's the voltages:

Looking at the pic I'd say motherboard is setting CLDO VDDG and VDDP voltages too high, find where you can set these on your bios and set both to 1V and see if it helps.

I'll try this and get back to you.

 

[TheoneandonlyMrK]

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

AMD's official Specification states memory and hence also infinity fabric speeds of 3200/1600 respectivly.

https://www.amd.com/en/products/cpu/amd-ryzen-9-3900x

Anything above that is an overclock and a bonus.

 

[KhakiKukhi]

Looking at the pic I'd say motherboard is setting CLDO VDDG and VDDP voltages too high, find where you can set these on your bios and set both to 1V and see if it helps.

Edit. I couldn't get 1800+ IF on my X570 TUF + R5 3600 at first either, then I manually lowered these voltages and managed to get IF to 1866 stable, 1900 not stable on my proc tho.

Edit2. My specs are not up to date.

I couldn't find the settings you talked about.

 

[biffzinker]

I couldn't find the settings you talked about.

The Channel A/B voltage of 1.476 if it relates to voltage to the Ballistix DDR4 sticks seems excessive when Crucial says 1.36. Might want to drop the voltage, I've had my PNY DDR4 3200 become more unstable (BSOD/Black screen) with a higher supplied voltage than the 1.35/36 when I'm overclocking to 3533 MHz.

 

[KhakiKukhi]

The Channel A/B voltage of 1.476 if it relates to voltage to the Ballistix DDR4 sticks seems excessive when Crucial says 1.36. Might want to drop the voltage, I've had my PNY DDR4 3200 become more unstable (BSOD/Black screen) with a higher supplied voltage than the 1.35/36 when I'm overclocking to 3533 MHz.

The Ryzen DRAM Calculator told me 1.45V. I'll lower it and test it.

UPDATE:
3600 CL14 @ 1.36V, FCLK 1800, can't even boot Windows.

But at 1.45V, it's stable.

Could it also be a hardware issue? It might be both a CPU and motherboard problem.

 

[TheoneandonlyMrK]

The Ryzen DRAM Calculator told me 1.45V. I'll lower it and test it.

UPDATE:
3600 CL14 @ 1.36V, FCLK 1800, can't even boot Windows.

But at 1.45V, it's stable.

Could it also be a hardware issue? It might be both a CPU and motherboard problem.

It could be any of those ir something else, I've been working at 3600 for about six months without getting it stable at various timings sub , tertiary and all and any settings.
Im at 3533 /1766 with tight 14,14,14,14,28,48 timings stable ,higher i can get booting nowadays but it never survives stability testing.
Some chips won't but that's not the end of the world, you could get higher bandwidth and lower latency a notch lower.

 

[KhakiKukhi]

It could be any of those ir something else, I've been working at 3600 for about six months without getting it stable at various timings sub , tertiary and all and any settings.
Im at 3533 /1766 with tight 14,14,14,14,28,48 timings stable ,higher i can get booting nowadays but it never survives stability testing.
Some chips won't but that's not the end of the world, you could get higher bandwidth and lower latency a notch lower.

I think you meant 6 weeks. Your CPU is a Zen+, I heard Zen2 has better memory support and was hoping it'd be true for my case.
I am only able to get 3600 C14 and FCLK 1767 myself. But the shop I bought my 3900X from allows replacements in a 1 month period. I might do that and hope my second chip will be better.

 

[TheoneandonlyMrK]

I think you meant 6 weeks. Your CPU is a Zen+, I heard Zen2 has better memory support and was hoping it'd be true for my case.
I am only able to get 3600 C14 and FCLK 1767 myself. But the shop I bought my 3900X from allows replacements in a 1 month period. I might do that and hope my second chip will be better.

no i meant six months and didnt mention 3 memory kits, yes the new chips are meant to do better, but then they do also include the infinity fabric ratio adjust , to enable higher then spec memory speeds to be run without over running the infinity fabric into instability by running it at a different speed/ratio.
Its there for a reason and your trying at the edges of what everyone gets ALL of these rysen to run at in infinity fabric terms(not memory) the odd one goes above 1800 not all a fair few will do 1800 but not all , all will do between 1600 and 1733 on the infinity fabric.

If they will, it's worth a go but no guarantees with speeds beyond spec on any chip.

 

[EarthDog]

I stopped reading a few posts in....sorry if this has been covered after...

Did you install the latest bios and try?
Is your memory on the qvl???

Its there for a reason and your trying at the edges of what everyone gets ALL of these rysen to run at in infinity fabric terms(not memory) the odd one goes above 1800 not all a fair few will do 1800 but not all , all will do between 1600 and 1733 on the infinity fabric.

AMD says 3600 is the sweetspot. Their own slide shows 3600/3733 as 1:1. 2x8gb at 3600 should run 1:1 on his board.

If I was you, OP... I'd set optimized defaults, and work on ram ONLY.

 

[KhakiKukhi]

I stopped reading a few posts in....sorry if this has been covered after...

Did you install the latest bios and try?
Is your memory on the qvl???

AMD says 3600 is the sweetspot. Their own slide shows 3600/3733 as 1:1. 2x8gb at 3600 should run 1:1 on his board.

Yup, the latest BIOS is Gigabyte F3 from Gigabyte's own website.
The RAM is also on the QVL albeit 1x8Gb.
I tried 1x8Gb 3600 CL16 FCLK 1800 as per QVL, still does not work.

 

[phanbuey]

On the plus side, you're really not missing anythingbetween 3200cl14 and 3600cl16 -- techspot found 0 difference between the two settings.

AMD Ryzen 9 3900X and Ryzen 7 3700X Review

It's finally time to review AMD's new 3rd-gen Ryzen processors. The Ryzen 9 3900X is a 12-core, 24-thread processor with a massive 64MB L3 cache. It costs...

www.techspot.com

Can you run the kit at 3200 c14??

 

[KhakiKukhi]

I used BIOS defaults with only the XMP enabled. Still black screens and reboots.

On the plus side, you're really not missing anythingbetween 3200cl14 and 3600cl16 -- techspot found 0 difference between the two settings.

View attachment 130562

AMD Ryzen 9 3900X and Ryzen 7 3700X Review

It's finally time to review AMD's new 3rd-gen Ryzen processors. The Ryzen 9 3900X is a 12-core, 24-thread processor with a massive 64MB L3 cache. It costs...

www.techspot.com

Can you run the kit at 3200 c14??

I'll try 3200 CL14 using the Ryzen DRAM Calculator.

UPDATE:
3200 CL14 with FCLK 1600 is perfectly stable.

 

[EarthDog]

2x8gb is not on the list for whatever reason...they wont help you otherwise...maybe there is a legit reason...

But you're sure its setting soc and ddr voltage, xmp?

It's odd because I've reviewed Giga boards (Elite, Ultra, pro wifi, pro wifi itx) and all four of those boards ran GSkill Neo 4x8GB at 1800 running 1:1. The only board that kicked my set down was an asrock who when manually set 1:1, ran fine.

 

[KhakiKukhi]

Man, this sucks. I paid $80 here just to get a 3600 CL16 Micron E-die that I can clock to 3600 CL14.

2x8gb is not on the list for whatever reason...they wont help you otherwise...maybe there is a legit reason...

But you're sure its setting soc and ddr voltage, xmp?

It's odd because I've reviewed Giga boards (Elite, Ultra, pro wifi, pro wifi itx) and all four of those boards ran GSkill Neo 4x8GB at 1600 running 1:1.

Oh, 1600 1:1 is easily achievable for me.
The problem is at 1800 1:1.

 

[EarthDog]

Sorry... I meant 1800...my set is ddr4 3600.

See edit/more in that post..

 

[jesdals]

On my 3800x I found that disabling xmp would give the best results. I am running 3600mhz Cl14,15,16, 16, 32, 50 1t on my memory the rest is auto and with 1.450 on vcore and memory. I dont touch pbo setting and just set Pstates to 4500mhz for the CPU and under the AMD overclocking 1800Mhz for infinity fabric and memeory, that it.

 

[KhakiKukhi]

For the SOC voltage, I've tired "auto" and 1.1V.
The DDR voltage I tried 1.45V.

I've also tried BIOS defaults with XMP enabled.

None of them worked.

On my 3800x I found that disabling xmp would give the best results. I am running 3600mhz Cl14,15,16, 16, 32, 50 1t on my memory the rest is auto and with 1.450 on vcore and memory. I dont touch pbo setting and just set Pstates to 4500mhz for the CPU and under the AMD overclocking 1800Mhz for infinity fabric and memeory, that it.

Hmmm... I'm gonna give this a try right now.

Nope, does not work.

 

[Metroid]

I guess you are the first person disappointed about ryzen, I mean if it cant go to 1800 then back down a bit and enjoy.

 

[EarthDog]

Maybe get a set of sticks that are actually on the QVL? You spend $700 on the board, grab something on the list that will work.

 

[KhakiKukhi]

Maybe get a set of sticks that are actually on the QVL? You spend $700 on the board, grab something on the list that will work.

1x8Gb of my ram is on the QVL. I ran stock BIOS with XMP, still does not work.

Sorry... I meant 1800...my set is ddr4 3600.

See edit/more in that post..

It's really weird because a setting below 1800, which is 1767, works perfectly fine.

 

[EarthDog]

1x8Gb of my ram is on the QVL. I ran stock BIOS with XMP, still does not work.

As I said earlier....

2x8gb isnt and likely for a reason.

Stick to the qvl....