Patriot Viper 4000MHz on Ryzen 9 X570 timing help

[CostaBunny74]

So I upgraded recently and for the first time in my life I went with AMD (much better value). I have a ROG Hero Crossfire VIII X570 mobo, R9 3900X CPU, but kep the 2x8GB Patriot Viper Steel 4000 19-19-19-39 kit from my 6th gen i7 build.

I am having a horrid time getting the most out of these bloomin sticks. I want to keep my FCLK to 1:1, and I can get the system stable at 3800MHz with the 19-19-19-39 timings (system seems to set em to 20-19-19-39). I would dearly like to get these B-Die equipped sticks to perform better as I know I am leaving performance on the table. (I have Aspergers and details like this drive me insane). I suspect I can tighten the timings up a bit to improve things; but I am having no luck.

Has anyone here got these sticks running nicely on a X570 board? I know they are not on the QVL list and I am happy to run my FCLK at 1900MHz with 3800MHz ram; I just want to get the best timings I can please.

Can anyone help a damsel in distress? Thanks

 

[CostaBunny74]

Thank you so very much for a detailed reply.

That gives me lots to review and plan for tomorrow

i will post back with my results

 

[CostaBunny74]

And @MrPils is a God when it comes to RAM tuning...

I have played about a bit today without much success. I think I am going to sell these to my brother (he inherited my old i7-6700K & ROG Hero VIII Z170 setup, and that's the combo that these Patriots were purchased for). He will be chuffed.

Hubby was kind enough to order me a set of the TeamGroup Ripped Edition 8-pack 16GB (2x8) 3600MHz CAS 14-15-15-35, coming tomorrow. At least they are on my QVL so I have a good base to start with. I am confident they will run nicely at 3800 1:1 at CL16 or better.

I just can't handle the stress to be honest, (timings for ram were so much easier back in my EOCF Pentium 640 CPU days...)... The timing options available on my current mobo is simply astonishing!

Thanks to MrPills for the awesome advice

 

[CostaBunny74]

UPDATE: having been impatient for the Corsair kit, I decided to just try it at the DOCP settings of 4000Mhz 19-19-19-39, with a manual fclk of 1800, and 1.45v. It is stable as a rock! runs smooth and no boot issues whatsoever, and despite the asynchronous infinity fabric clock, it seems to have lost nothing in the performance area.

So I take it all back: these Patriot Viper Steel DDR4-4000's are still amazing value. They may not be on the QVL list for the Asus Crossfire Hero VIII, they are absolutely fine with minimal fuss.

Decided to cancel my order for the Corsair QVL approved kit, and hubby treated me to a Jonny Silverhand statue, Cyberpunk 2077 book and a pack of the Corsair fake rams with ARGB! One very happy Bunny indeed.

 

[CostaBunny74]

you need to keep the MCLK and FCLK the same.
the only reason to set different clocks is if your FCLK(fabric) is bad and needs to be very low. in the case say... 1600FCLK and 2000MCLK the performance hit from them been unlinked can be negated by the must faster ram speed
For something as close as 1800/2000 you will never make up the hit in performance.

lock the MCLK and FCLK to 1800 drop ram voltage to 1.35v and start working on timings.
only UP Ram voltage as and when needed, most ram takes a crap at 50c(ish) and will show errors in testing because of the heat not because if stability.

my ram OC metherd is Simple... work on 1 primary timing at a time. set XMP adjust MCLK to 1800mhz(3600mkz) turn on "gear down mode" and set command rate to 1T.

So..

3600Mhz - 19-19-19-39 1t ... TEST GOOD
3600Mhz - 18-19-19-39 1t ... TEST GOOD
3600Mhz - 16-19-19-39 1t ... TEST GOOD
3600Mhz - 14-19-19-39 1t ... TEST BAD
and so on When its bad go to last known good and move on.

3600Mhz - 16-19-19-39 1t ... TEST GOOD
3600Mhz - 16-18-19-39 1t ... TEST GOOD
3600Mhz - 16-17-19-39 1t ... TEST BAD

And just work your way down the rows...

Totally.

I just wanted to see it run stable at the XMP settings. I previously had issues with only 1.35v, so dialed in 1.45v as the are samsung b-die. Happy that it works without any real hassle.

I will of course be optimising them when I have enjoyed a bit of Elite first got me some bounty's to hunt...

My test plan is pretty similar but starting at 3800 as my fclk is quite happy at 1900 without much hassle. If I can, I intend to do a little 3800 Sync vrs 4000 Async real world testing just for community info. Oh, and because I feel compelled to due to my Aspergers OCD.

...watch this space...

 

[CostaBunny74]

you need to keep the MCLK and FCLK the same.
the only reason to set different clocks is if your FCLK(fabric) is bad and needs to be very low. in the case say... 1600FCLK and 2000MCLK the performance hit from them been unlinked can be negated by the must faster ram speed
For something as close as 1800/2000 you will never make up the hit in performance.

lock the MCLK and FCLK to 1800 drop ram voltage to 1.35v and start working on timings.
only UP Ram voltage as and when needed, most ram takes a crap at 50c(ish) and will show errors in testing because of the heat not because if stability.

my ram OC metherd is Simple... work on 1 primary timing at a time. set XMP adjust MCLK to 1800mhz(3600mkz) turn on "gear down mode" and set command rate to 1T.

So..

3600Mhz - 19-19-19-39 1t ... TEST GOOD
3600Mhz - 18-19-19-39 1t ... TEST GOOD
3600Mhz - 16-19-19-39 1t ... TEST GOOD
3600Mhz - 14-19-19-39 1t ... TEST BAD
and so on When its bad go to last known good and move on.

3600Mhz - 16-19-19-39 1t ... TEST GOOD
3600Mhz - 16-18-19-39 1t ... TEST GOOD
3600Mhz - 16-17-19-39 1t ... TEST BAD

And just work your way down the rows...

Well I have got it running very stable just on 3800 1:1 20-19-19-19-38

Ryzen Memory Calculator suggests I should be able to get these to 16-16-17-16-34 with a bunch of tweaks. I am going to slowly head for that, and see how close I can get. I did manage my best Firestrike yet with the current settings (14,522, with CPU score record for me of 12245)!

I will keep this thread updated with my progress. So glad I decided to stay with this Patriot kit after all. It seems to be full of potential as long I follow my own mantra for testing : One step at a time, Test well then move on...Patience is key.

Rachel

 

[CostaBunny74]

No worries, you should be doing way better than CL 19 @ 3800mhz . Those sticks are at the lower end of performance B-Die bins but should still do fairly well.

Once thing that's not mentioned in the post I linked is Gear Down Mode (as the chap it was directed at already had it disabled). As you are running 8gb sticks set that to disabled and go with 1T command rate right from the start, you should have no problems with that.

If you get stuck at any point use Zentimings to post up your memory timings - it captures every timing you can set in bios (and a few extras you can't) while being way more lightweight than Ryzen Master.

I am moving forward with slowly testing/tightening my timings at 3800 1:1
If I get stuck, am I ok to post my current status with zentimings and ask for a drop from your cup of wisdom?

Thanks

 

[CostaBunny74]

Yeah sure, just @ me or quote me so it pops up in my alerts

My current timings etc. I am tempted to put the new AGESA 1.1.9.0 beta on as it is said to be able to run fclk at 2000; meaning I could perhaps just use my XMP Profile of 4000 19-19-19-38, but I am hesitant. I am open to suggestions...