Crosshair VIII 2501's for testing

[Baio73]

On the CH8, I've read the Cstate has been said to be too aggressive that some CPUs either blue screen or reboot due to the CPU core voltage being lowered too much when the CPU is not under load.

It should be under Advanced, AMD CBS, NBIO Common Options, SMU Common Options, DF Cstates. Could set this to Disabled.
Source: https://www.overclock.net/threads/as...hread.1728796/

Gonna give it a try... but disablilng it means the CPU is always stuck at maximum power consumption?

Baio

[RedSector73]

Gonna give it a try... but disablilng it means the CPU is always stuck at maximum power consumption?

Baio

Good question Baio, I'm not 100% sure but I believe the answer is yes with the advantage of your system no longer has to wake from cstate. The additional power use only matters for laptop `imo and be interested if this solves the issue for you.

[78Staff]

I can say that I have tried the "Safe" calculator settings... 14-15-15-15-30.... with my 3600 B-die, at 3600/1800 2x16Gb Neo kit, and the system wouldn't boot.

Same for me with with Neo Z 3600 CL16 B-Die's - Safe mode settings would not boot. I tried multiple times, along with bumping voltages as well. I finally just reverted to my RipJaws 3200 CL14 4x8's running DCOP only and bailed on the 4x16 Neo's. (3900X)

At some point, a 5900 or 5950 will find it's way into my board, so would like to get back into some 2x16, 2x32 or 4x16, but am lost on what to look for at this point. Basically just want to run 3600/1800 for content creation, not really needed excessive memory OC for gaming or anything. Neo Z, Royal, or other?

[78Staff]

After having issues with 2311, 2402, 2701 and 039 (Stilt) - WHEA Errors and restarts, I've reverted to 2206.

I have a Crosshair VIII Formula with 3950X and planning to upgrade to a 5000 series CPU at some point.

After several weeks of chasing issues and changing BIOS versions, I've been rock-steady for 48 hours with combination of 20+ hours at 80-100% CPU running encodes and 6 hours idle time. No WHEA errors or restarts (hoping I'm not jinxing myself)....

I see ASUS now has BIOS 2702 published - not sure if it's anything different than 2701 other than production version...???

Waiting and watching for the time being....no hurry given 5000 series availability!

2206 is the last bios before the 5000 series changes, correct?

[RedSector73]

2206 is the last bios before the 5000 series changes, correct?

2311 was first BIOS with changes added in for 5000 series. Why are you asking this ?
I can run the 2702 BIOS, and we have similar systems, anyway 1302 was very stable BIOS for 3000 series but PBO really didn't work back then `imo.

...would like to get back into some 2x16, 2x32 or 4x16, but am lost on what to look for at this point. Basically just want to run 3600/1800 for content creation, not really needed excessive memory OC for gaming or anything. Neo Z, Royal, or other?

Some Generalised Information:-
B-die is best for tinkering and overclockers tend to prefer it because it is more tolerant and able to adapt with predictable results and generally it's expensive (I think worth it). You can use SK Hynix, Crucial / Micron or Samsung (the only real manufacturers of RAM dies) and *generally any die for set and forget installations and maybe able to tighten timings a little to achieve better than average speeds using tools such as Ryzen Dram calculator.

*4x8 is sometimes harder to run but a kit specifically approved for use on AMD such as g.skill NEO branded would work out of the box. 4x8 will give you dual rank (it's fairly rare to see 8gb stick dual rank to start with).

*2x16 will most likely give you dual rank RAM (although should verify) and g.skill NEO branding are all approved for all Ryzen CPU's

*RAM can be verified for use, in three ways.
(1) Motherboard Manufacturer RAM QVL list.
(2) RAM Manufacturer QVL list.
(3) AMD RAM QVL list.
https://www.amd.com/en/products/ryze...-gen-amd-ryzen – not sure they have done 5000 series list but given the memory controller is identical fairly safe bet.

All lists are a valid way to have approval but not all RAM will be listed on all three. Ideally, as a popular song goes, 2 out of 3, aint bad. But even one is better than none and I would avoid not listed.

If your heart is fixed on Samsung b-die (newegg or amazion is likely source for a decent price) and this tool https://benzhaomin.github.io/bdiefinder/ in advanced mode can provide answers about if it is or isn't.

Specifics:-
I would be looking at 3600 kit CL16 2x16.
You can run DDR4 3200-3600 CL16 as an ideal in 2x8, 2x16, 4x8 (see note)

Note:- For any 4xRAM config be sure it has verification to run and be aware mixed kits are currently having more than usual troubles for the 5000 series and even 3000 series on latest BIOS.

Some known examples below,
2x16
https://www.newegg.com/global/au-en/...2E16820232860? – bdie kit
https://www.newegg.com/global/au-en/...2E16820232861? – Hynix
4x8
https://www.newegg.com/global/au-en/...2E16820232895? – bdie kit

Last thing, only listed g.skill Neo as become little rusted on it and there are many many many kits which work. Once upon a time, I was rusted on Corsair (with Intel prior to problems with Ryzen) and before that really liked and used to use OCZ & Mushkin. I've used Patriot Viper memory (4133 b-die), Team Group RAM and Crucial / Micron memory, all with Ryzen's without issues.

Hope you find this helpful.

[78Staff]

2311 was first BIOS with changes added in for 5000 series. Why are you asking this ?
I can run the 2702 BIOS, and we have similar systems, anyway 1302 was very stable BIOS for 3000 series but PBO really didn't work back then `imo.

Curiosity, mostly. I'm on 2502 (release, not beta) now and am stable with a 3900x but only b/c I moved back to single rank dimms. I am reluctant to change anything at this point until I am forced to either by upcoming CPU change - Although I was hoping to order some replacement memory on cybermonday (today) but have no idea what to buy now. My previous "designed for Ryzen" Neo Z B-dies didn't work out well at all in 4x16.

[78Staff]

Specifics:-
I would be looking at 3600 kit CL16 2x16.
You can run DDR4 3200-3600 CL16 as an ideal in 2x8, 2x16, 4x8 (see note)

Note:- For any 4xRAM config be sure it has verification to run and be aware mixed kits are currently having more than usual troubles for the 5000 series and even 3000 series on latest BIOS.

Some known examples below,
2x16
https://www.newegg.com/global/au-en/...2E16820232860? – bdie kit
https://www.newegg.com/global/au-en/...2E16820232861? – Hynix
4x8
https://www.newegg.com/global/au-en/...2E16820232895? – bdie kit

Last thing, only listed g.skill Neo as become little rusted on it and there are many many many kits which work. Once upon a time, I was rusted on Corsair (with Intel prior to problems with Ryzen) and before that really liked and used to use OCZ & Mushkin. I've used Patriot Viper memory (4133 b-die), Team Group RAM and Crucial / Micron memory, all with Ryzen's without issues.

Hope you find this helpful.

Thanks, I appreciate the writeup. The first newegg linked Neo Z CL16's are the ones I had. Two dimms ran find, but 4 dimms I ran into all kinds of issues with the 2311 and above - same as others -unable to post with DCOP settings, event 41's etc which we've now found to be most likely issues with the IMC and 4x dual rank dimms.

I may re-order them, and just stick with 2x16. I was just disappointed I couldn't make the jump to 64GB with those dimms.

[RedSector73]

Can you try this, the latest BIOS, your 4 DIMMS... make sure keep them grouped to original kits (serial number identity kits 1 up n down of each other normally). OK first kit, from CPU in slots 2 & 4 other kit in slots 1 & 3.

Now with DOCP profile active, use
SOC voltage 1.1, or 1.125 or 1.15 and see if can get boot, no luck swap the kits over, so that 1&3 now in 2&4 then retry SOC voltages given.

Some other observations I've made, it appears to me the kit in slots 2&4 is read for DOCP profile and 1&3 is assumed identical. There is always differnces between the kit, we need the worse one if that was such a thing in 2&4 for the RAM training with DOCP read.

Hopefully this gets it going.

[78Staff]

Can you try this, the latest BIOS, your 4 DIMMS... make sure keep them grouped to original kits (serial number identity kits 1 up n down of each other normally). OK first kit, from CPU in slots 2 & 4 other kit in slots 1 & 3.

Now with DOCP profile active, use
SOC voltage 1.1, or 1.125 or 1.15 and see if can get boot, no luck swap the kits over, so that 1&3 now in 2&4 then retry SOC voltages given.

I don't have the Neo Z's anymore unfortunately... I'm running my old RipJaws 3200 C14's in 4x8 now, which are stable at DOCP.

But I was thinking of trying the Trident's again - either the Trident Neo or Neo Z 3600 C16's (is there really any difference - reviews state both run on Ryzen fine, the "For Ryzen" set is just marketing) or maybe just get a 2x32 C18 set and avoid the 4 dimm issue altogether.

[RedSector73]

Honestly, 3600 CL16 is good enough. CL14 is extra few FPS and might shave a bit more off time dependant applications like rendering. CL18 kits we need to move away from CL xx gauge and look at the real latancy NS response time ... confused yeah me to... trying to say CL18 or even CL22 kits can be great as well.

This article explains why it bad measure, but we all use CL xx.
https://www.crucial.com/articles/abo...ed-and-latency

This site often has RAM kits actual NS rated speed
https://pcpartpicker.com/

2x16 is simply way to get rank2 advantage (as most are rank2 not rank1). While I run 4x8 not in habit recommending what is not work to keep running BIOS to BIOS. I know, I tinker and like it but I know not everyone likes doing this and would not do this on work type machine.