AMD - Better performance with slower RAM

You need to make sure that your IF is running 1:1 when your RAM is at 3800MHz.

What timings did you use for the Thermaltake RAM? You can probably tighten it down to CL16.
 
I set the FClk to 1900 and the ram to 3800 but CPU:Z said the FSB:DRAM was 3:54 or something. Rather confusing.

The Thermaltake RAM was like 19-25-25-45.

The Ryzen ram calculator wouldn’t find the D type ram made by Hysrtix, so I couldn’t. Calculate it manually.

I just want a fast rig for gaming with a bit of RGB to make me feel cool lol.

should I push the timings down and the speed up or will it only yield tiny improvements?

How would I go about improving things?
 
Yeah I’ll take a look at that, with the Thermaltake ram it wouldn’t find the details properly.

Hopefully the G.Skill ram would be better
 
I'm on the fence to whether I prefer 3200 with tighter timings or 3600 with slightly looser timings to be honest.
Certainly not detecting or perceiving any noticeable real different in-game.

Notice how the L3 cache write is way down at 3600/1800.

AID64_Before.png
AID64_3600.png
 
The thing for me is speed is everything.

Poor timings at faster speeds will be negated by the speeds, in my opinion.
Just can’t get my FCLK clock higher.

Had it at 1900 last week. Can’t boot it now.
 
I have a new 5800X build and I am trying to catch the reason why I CAN run:
2x8 GB Corsair Vengeance RGB Pro 3600MHz default XMP 18-22-22-42 and 1.35V, FCLK 1800,but I CANT run:
The same memory, but upgraded to 32GB (4x8GB) @ 3600MHz, again all default XMP. Just a side note which doesnt matter IMO, its 2x8 GB kits purchased separately, different ram chips maker. But Aida64 shows to the point exact specs for all 4x8 GB modules.
So with 4x8GB the RAMs simply will not function correctly @ 3600MHz and FCLK 1800. I will boot to Windows, but will not pass Aida 64 stress test.
With all set to 3200MHz and best possible timings of 16-16-16-36 and FCLK 1600 all is rock solid and pass Aida64 stress test.
Also, from the attached picture 2 things worry me:
1. In contrast to above young mans 3500X why on earth my 5800Xs L3 Cache is so low??
2. Why is my North Bridge Clock Data missing from the appropriate field?
Appreciate any input in advance!

YntqCVf.png
 
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I see you got yourself the 5800X as well? :)
Running FCLK @ 1800 I see.. Did you run Aida64 stress test?
you have OCed to 4.8Hhz on all cores or is it with PBO?? what cooling you are using?

EDIT:
Do you have 16GB or 32GB RAM?
 
Hello,just reporting back..I did a lot more research and found a super educative and helpful artice on overclocking the RAM..and Even though in my case overclocking wasnt really the point,just trying to make work the advertised speeds of 3600Mhz in the 4X8 GB configuration..I have learned a lot about the main RAM die worldwide producers and how certain die types behave..So bottom line is,that things may sometimes just need a little bit more juice and so increasing DRAM voltage from 1.35V to 1.4V instantly fixed my issue! What more,I went from 18-22-22-42 to 16-18-28-38 rock solid...whoop whoop!
Also super fine tuned my 5800X too!
Runnig manual OC @ 4.45GHz all cores and an hour into stress all in Aida64 avergage temps are 78°C with max of 81°C...VRMs never even crossing 50°C!
Very happy 5800X owner :)
 
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