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I don't know, I have a 3900X too, and a 3700X, both does 3800MHz memory with latest AGESA on B550-F and C7H

You must have missed all the "OC" marks, OC is OC and not guaranteed, it's "up to" - in the best case scenario

Curve Optimizer, it's menu is only activated with a Zen 3 CPU, can make a big difference

The chip only supports 3200MHz memory, anything above is OC and can't be guaranteed. Also DOCP support is sketchy. The best way to run fast memory is to do the settings for timings/subtimings...

I'm mainly talking about Ryzen 5000 and their happy boost to 5150MHz, with CO, which possibly is problematic. You run Ryzen 3000 so you are not affected much.
I run FCLK 1900 on C8H, C7H and B550-F...

Shamino said at overclock.net why it was removed, because of non booting issue with certain 3300X:s, it should be good to use with all other supported CPU:s.

It's kinda logical, if it's the much improved boost in later AGESA which are the reason for the sudden reboots: moving to a older AGESA without the extreme boost would remove the problem. But also...

Current settings, runs performant, I did not have permissions to provide a attachment so I'll try to text spam instead :)

[2020/12/08 18:57:16]
Ai Overclock Tuner [Default]
CPU Core Ratio...

I run C7H/5900X with bios 4001, I have 1600+/21800 in CB R23. What I've found is PBO/Auto OC etc tanks performance with Zen 3. Just run like everything on Auto and the scores will come. Zen 3 har...

Strange both C7H and Prime Pro has got AGESA 1.1.8.0 with the latest features for Zen 3, while my B550-F is still on 1.1.0.0 patch C which is not feature complete. Running the latest bioses from...

You have to play around a little more with timings/subtimings, D.O.C.P/XMP is not a given, but once finding the right settings it's rock stable. I have and use 2700X, 3700X and 3900X and zero...

https://www.overclock.net/threads/rog-crosshair-vii-overclocking-thread.1685809/post-28650541

Memory doesn't affect CB20 at all, so there it that, and PBO needs great temps to make any difference as Ryzen drops frequency at certain temps

But when you used higher freq memory you probably...

I had some USB problems with the latest AGESA 1.1.0.0 bios for the B550-F, after testing lots of things I found out the new bios needs higher VDDG than what was needed before. Just raising VDDG with...

Yes, C7H is a extreme solid board, it will run 5900X as good as any X570/B550. But it will miss out on some features, like smart access memory, and of course it's PCIE 3.0. Maybe 5-10% slower with...

@Shamino, any chance of getting the 0019 Beta-bios for C7H WiFi ported to "normal" C7H without WiFi?

Sleep issue is reportedly solved, and the new FMax is a killer feature, would like to test...

No problems at all with the 3103 bios, same settings as before, but I run the unofficial Beta that was posted at oveclock.net. I don't think there is any difference though.

You shouldn't use a preset with a new bios, lot's of things may have changed, you have to redo your settings maybe different to reach the same result.

I had a similar problem, using Windows own network adapter reset in settings cured it

You're running OC, far from JEDEC spec, of course actual settings that works will vary. Like VDIMM.

It's well known 4 sticks plays worse than 2 on all motherboards, it's specified by AMD/Intel, especially when the sets aren't matched.

Why are you surprised they haven't already tested your...

Strange with all those issues on C8H, I use the newest bios versions with V1 1.0.0.6/V2 1.0.0.2 on C7H/X470-Prime Pro/Strix B550-F and all three are stable and performant

Crashes under idle sounds...

Mine are 3600 17-19-19-19-39-58 / 1.35V ( F4-3600C17-16GTZR ), chips are K4A8G085WB-BCPB 8 Gb B-die (20 nm) / 1 die. PCB is double sided (dual rank).

And this is what I run

85552

Proc ODT is...

Why don't you just learn how to configure your RAM yourself? It's free of charge, no money involved. Just takes a few reboots and a couple of clear cmos to find the right settings. You even have a...

A little late, but now I got time to check my drive. It looks ok, a one year old 970 Evo Plus. Bios 3103.

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