Ryzen 3000 series support

An interesting video about boost frequencies:

https://www.youtube.com/watch?v=o2SzF3IiMaE

Xaltar,

It would be really nice to see your observations after testing of 3600. For me 2 issues are still actual:
- boot loop. If I switch on PC after long pause like once in a day - it boots ok, if I need to reboot hot system 100% it's gonna dive in this loops
- CPU hot temps. It changes between 38-50 without loading and up to 75-85 if I run something like a game or test. I even replaced stock cooler to bigger one dedicated for 140W, no difference. I suspect that measured temps do not belong to 7nm CPU cores, but this only my guess..

Hi.
I currently have the Fatal1ty X370 Gaming-ITX/ac.
I was using a 1600x on it, but recently got myself the 3900x.
I've updated to the latest bios (5.90 AMD AGESA Combo-AM4 1.0.0.3 ABB) but it won't post.
When I put in a friend's 3800x, it'll post, boot and perform normally (but have to disable XMP). When I put in my old 1600x, it'll post, boot and perform normally (even with XMP enabled)
Why isn't the 3900x posting when it's clearly stated as compatible on the support section...
Is there anything I can do to get the 3900x to work?

topaimz wrote: Hi. I currently have the Fatal1ty X370 Gaming-ITX/ac. I was using a 1600x on it, but recently got myself the 3900x. I've updated to the latest bios (5.90 AMD AGESA Combo-AM4 1.0.0.3 ABB) but it won't post. When I put in a friend's 3800x, it'll post, boot and perform normally (but have to disable XMP). When I put in my old 1600x, it'll post, boot and perform normally (even with XMP enabled) Why isn't the 3900x posting when it's clearly stated as compatible on the support section... Is there anything I can do to get the 3900x to work?

Look at this table (row 146), it has some info for 3900x CPU marked *
https://docs.google.com/spreadsheets/d/1d9_E3h8bLp-TXr-0zTJFqqVxdCR9daIVNyMatydkpFA/htmlview?sle=true#gid=639584818

Xaltar wrote: At a guess, I would suspect the PSU isn't adequate for the 12 core CPU. The 3800x may have the same 105w TDP but with 4 fewer cores it will require less power to initialize.

Unfortunately it's seeming doubtful of it being that simple with the bootloop issue I'm seeing reported but here goes.

I've got the following bootloop issue:
shutdown the PC.
usually noticed the next day when I attempt to power the system up the motherboard will continuously loop powering on then off whilst showing nothing on the display, no Asrock logo or anything, until eventually it boots with reset UEFI settings, including a useless set of case and CPU fan profiles.

My system is as follows:

AMD Ryzen 5 3600
Asrock B450 ITX Fatal1ty motherboard on UEFI version 3.50
2x8GB Ballistix Sport DDR4 RAM
Samsung 860 EVO 1TB SSD
Corsair SF600 PSU

The system booted perfectly for a few tests when I installed a loaned Ryzen 7 2700X CPU (which has a FAR higher core count and TDP) for the purpose of updating the UEFI to support my R5 3600 CPU.

There appear to be others reporting similar issues here:
https://www.reddit.com/r/ASRock/comments/cofm1g/asrock_b450_itx_3700x_my_post_boot_loops_and_wake/?sort=new

https://www.reddit.com/r/ASRock/comments/ctqc15/fatal1ty_b450_gamingitxac_boot_loops/

There have been suggestions that specifically the Corsair SF600 doesn't gel well with this particular motherboard and CPU together but there are others who have said changing PSU made no difference at all.

Hopefully Asrock can come up with something soon, the refund deadline for my motherboard is early next month but having to wait for the system to do it's stupid cycle and then reset the curves for my fans every single day is rapidly getting tiresome.