What is your max stable ram/infinity fabric speed on Ryzen 3000-series?

[ERazer]

3600/1800 xmp, Im too lazy to mess with it im pretty sure i can run it 3800/1900

 

[Chrispy_]

Definitely built 8x 3950x with Patriot DRR4 3600 kits and they all ran 3600MT/s even with four DIMMs at default XMP.

I had the same RAM on tap for a couple of completely unrelated builds using Ryzen 5 3600 chips and one of them didn't make it. I swapped the RAM out and it was the same problem, could get it borderline stable at custom timings but in the end settled for XMP timings and RAM frequency reduced to 3533MHz (so 1766 FCLK)

These were 1.0.0.3 ABB or ABBA days though.

 

[TheLostSwede]

Definitely built 8x 3950x with Patriot DRR4 3600 kits and they all ran 3600MT/s even with four DIMMs at default XMP.

I had the same RAM on tap for a couple of completely unrelated builds using Ryzen 5 3600 chips and one of them didn't make it. I swapped the RAM out and it was the same problem, could get it borderline stable at custom timings but in the end settled for XMP timings and RAM frequency reduced to 3533MHz (so 1766 FCLK)

These were 1.0.0.3 ABB or ABBA days though.

Obviously not proof of, but definitely and indicator that the memory controller quality varies with the CPU SKU you end up getting. From what I've seen, it doesn't seem like later AGESA's improved the IF/memory stuff to any large degree after 1.0.0.3 ABBA.
Thanks for sharing.

 

[Chrispy_]

Obviously not proof of, but definitely and indicator that the memory controller quality varies with the CPU SKU you end up getting. From what I've seen, it doesn't seem like later AGESA's improved the IF/memory stuff to any large degree after 1.0.0.3 ABBA.
Thanks for sharing.

Yeah, sample size way too low to be statistically significant but it does support the theory.

Low-end SKU's getting the worst parts of the silicon wafer has been confirmed by Intel at least and possibly by AMD too. Worst in this case means lower clocks and requiring higher voltage. Typically the middle of the wafer is where the 100% flawless chips are likely to be. These are the top-tier enterprise/server parts. At the edges you have stuff like the 3100 which presumably has multiple defects in at least one of the two CCXs. If there were only one defect per CCX it would be sold as a six-core part for higher profit.

Unless of course, AMD are taking the hit on purpose, just to have something at $100 to screw over Intel - it wouldn't be the first time AMD/Intel/Nvidia have played that game, if they ever even stopped playing it originaly

 

[TheLostSwede]

Yeah, sample size way too low to be statistically significant but it does support the theory.

Low-end SKU's getting the worst parts of the silicon wafer has been confirmed by Intel at least and possibly by AMD too. Worst in this case means lower clocks and requiring higher voltage. Typically the middle of the wafer is where the 100% flawless chips are likely to be. These are the top-tier enterprise/server parts. At the edges you have stuff like the 3100 which presumably has multiple defects in at least one of the two CCXs. If there were only one defect per CCX it would be sold as a six-core part for higher profit.

Unless of course, AMD are taking the hit on purpose, just to have something at $100 to screw over Intel - it wouldn't be the first time AMD/Intel/Nvidia have played that game, if they ever even stopped playing it originaly

Nah, that's just standard chip binning. Applies to anything made on a standard silicon wafer. I'm just surprised that it has that much of an affect on AMD's memory controller and the Infinity Fabric. I don't think Intel has this issue with the memory controller, but then again, the clock speed of the memory doesn't affect the internal bus speed on Intel chips.
Micron/Crucial sent out this press release last year, with the 3600X taking the world record and that's obviously already a "lower grade" part, so it might just be a matter of the silicon lottery once you go below a certain SKU.

Micron Memory Sets New DDR4 Overclocking World Record

Ballistix, Micron's global brand of high-performance gaming memory, has set a new overclocking world record for the fastest DDR4 memory frequency at 6024 MT/s. Leveraging performance-tuned Micron die and the innovation behind the new Ballistix Elite 4000 memory, the ASUS motherboard R&D team set...

www.techpowerup.com

 

[Pieruzan]

3733/1866 cl14 on a ryzen 3700X@4350 allcore - aorus elite X570 - DDR4 viper steel 4400
At 3800/1900 latency gets much worse And I still don't understand why.

 

[Taraquin]

3733/1866 cl14 on a ryzen 3700X@4350 allcore - aorus elite X570 - DDR4 viper steel 4400
At 3800/1900 latency gets much worse And I still don't understand why.

It probably because IF don't run at 1900. Same happends to me when I try 3800cl16.

 

[Lindatje]

AMD states that 3600/1800MHz should be achievable for most, many users are able to clock higher without problems. I made this poll to get a better idea how much most of us can achieve

4000/1900 but it’s not faster then 3400 in the games, so i don’t see any reason for me to use that 4000/1900.

 

[TheLostSwede]

3733/1866 cl14 on a ryzen 3700X@4350 allcore - aorus elite X570 - DDR4 viper steel 4400
At 3800/1900 latency gets much worse And I still don't understand why.

You need to set the IF manually in the "AMD" settings in the UEFI at that point. Gigabyte only does auto IF speeds up to 1866MHz.

 

[Pieruzan]

It probably because IF don't run at 1900. Same happends to me when I try 3800cl16.

No, IF was 1900.

 

[pcwolf]

ASRock X470 Taichi, 3950X and Team Group top rank B-die just will not get to 3800/1900 FCLK at CR1.

But it drives 4x8Gb at 3733 coupled all day long .

Next motherboard, I am going with TheLostSwede's Gigabyte Aorus Master X570

 

[Karmal]

Hello everyone I ask you experts ... I have an ASUS ROG Crosshair VIII Hero wi fi with ryzen 3950x and rtx 2080 ti, I state that as bios I have the 2702 all by default in docp and everything was stable, never a problem or a smooth shutdown for 6 months this with the 3000 mhz ram hiper x fury kit of 64 gb (4 modules of 16 gb), the problems arose when I changed this ram with a 128 gb kit always hyper x fury at 3600mhz (4 banks of 32gb) among other things certified in the vendor list asusu bios the same and always all by default in docp .. the problem that I have sporadic random reboots even two a day even just surfing the internet and sometimes the pc instead of restarting remains black screen due to it physically turn off with the power button then it restarts normally I did a test cycle of about 11 hours with memetest but it did not find any errors, do you have any solution? is it better to replace the ram modules I had before? ... gives me the idea that this motherboard does not support 128 gb of ram even under windows 10 pro

 

[TheoneandonlyMrK]

Hello everyone I ask you experts ... I have an ASUS ROG Crosshair VIII Hero wi fi with ryzen 3950x and rtx 2080 ti, I state that as bios I have the 2702 all by default in docp and everything was stable, never a problem or a smooth shutdown for 6 months this with the 3000 mhz ram hiper x fury kit of 64 gb (4 modules of 16 gb), the problems arose when I changed this ram with a 128 gb kit always hyper x fury at 3600mhz (4 banks of 32gb) among other things certified in the vendor list asusu bios the same and always all by default in docp .. the problem that I have sporadic random reboots even two a day even just surfing the internet and sometimes the pc instead of restarting remains black screen due to it physically turn off with the power button then it restarts normally I did a test cycle of about 11 hours with memetest but it did not find any errors, do you have any solution? is it better to replace the ram modules I had before? ... gives me the idea that this motherboard does not support 128 gb of ram even under windows 10 pro

Sounds like a memory related shut down, your way beyond the guaranteed speeds with four sticks , maybe up ram volts or loosen timings , did you buy a quad set or two dualies and are you at Xmp settings.

 

[Karmal]

Sounds like a memory related shut down, your way beyond the guaranteed speeds with four sticks , maybe up ram volts or loosen timings , did you buy a quad set or two dualies and are you at Xmp settings.

I purchased a certified memory kit for the crossfire hero viii from asus it appears in the vendor list HX436C18FB3K4 / 128 and I have dopc activated

 

[brandon7171]

3800/1900 on both my 3900X and 3700X system.... same ram, same motherboards though. The only chip I've seen have some issues even at 3600/1800 is the R5 3600.

What type ram do u have, r u running 16GB kit R 32GB kit?

 

[TheoneandonlyMrK]

I purchased a certified memory kit for the crossfire hero viii from asus it appears in the vendor list HX436C18FB3K4 / 128 and I have dopc activated

So as compatible as can be ,good, though still possible to be the cause, technically.
Looking like the memory controller is having issues with your demands to me then, I'd investigate which by lowering memory clocks to check and monitoring memory and IMC temperature, if ok you either need more power or possibly cooling somewhere, or the chip is just past it's limits which is beyond the CPU spec of 2933(2666with 4 actually I think) max afaik.

 

[oxrufiioxo]

What type ram do u have, r u running 16GB kit R 32GB kit?

4x8GB 3200CL14

 

[xrror]

Just what I've had experience with:

3 3600 1766 3533 but you can BCLK up to the 1800/3600 equivalent (doesn't take much, 102/3 + )
2 3600X can directly set 1800 3600

3800X can directly set 1800 3600 with 16GB
but had to back down to 1766 3533 for 32GB (2 * 16)

To be honest haven't tried hard for over 3800 since my early tries were with launch 3600X and later 3800X. The only set of memory I had rated for over 3600 at the time was Samsung B die - those two weren't the easy clock like hynix turned out being.

I should probably go back and check now that firmware updates for 3000 series are pretty much ironed out now. It would be nice to get the 32GB set up to speed.

 

[Karmal]

yesterday i used the pc all day trying to shut down and reboot and running some tests with firmware 3003 in docp with ram 4 banks 32 mgb at 3600 mhz and had no shutdown after i set dram current capability to 120% strange not I have touched tensions
today I will be at work and I would like to keep it on to check if it will have shutdowns which test I could use to send the pc into crisis and check for any problems?
until now I have not touched the soc

 

[TheoneandonlyMrK]

yesterday i used the pc all day trying to shut down and reboot and running some tests with firmware 3003 in docp with ram 4 banks 32 mgb at 3600 mhz and had no shutdown after i set dram current capability to 120% strange not I have touched tensions
today I will be at work and I would like to keep it on to check if it will have shutdowns which test I could use to send the pc into crisis and check for any problems?
until now I have not touched the soc

World community grid is my go-to test.

 

[Karmal]

questo è il mio kit chip micron...Are my settings correct?

 

[Zach_01]

 

[Karmal]

Here's what Asus said about my sudden reboots. Thank you for contacting Asus support. The reported problem, since the memories are included in the QVL list, is caused by an error in the installed Bios version. Does the problem occur only when 4 memory modules are installed? If the problem does not arise without the activation of the DOCP profile, please try to configure the memories manually by selecting a lower frequency and check if the system is stable.

 

[Deleted member 193596]

neither my 3600x nor my 3800x are able to run above 1800..
even my 5800X is barely stable at 1800

 

[freeagent]

I’m not sure what the max of my 3600XT is but it can do 1900 with no effort. I feel kind of bad for saying that.. but it probably won’t go much higher without bumping some voltage. Running 14-15-15 35 1T on the mems with no overclock on the CPU.. I feel kind of dirty saying that.