Wednesday, March 20th 2019

MSI Rolls Out AMD 400-series BIOS Updates with "Zen 2" Microcode

MSI mid-March began quietly rolling out BIOS updates for its socket AM4 motherboards based on AMD 400-series chipset, with a very ominous BIOS change-log entry: "Support new upcoming AMD CPU." At first, we dismissed this for being the company's follow-up to its 6th March announcement of support for some of the newer Athlon processor models, namely the 220GE and 240GE. After updating our MSI B450 Gaming Pro Carbon AC with one of these BIOSes, however, we discovered a very interesting microcode string - AGESA COMBO-AM4 0.0.7.2.

Such a major change in AGESA shouldn't be warranted to add support for two new chips based on existing "Raven Ridge" architecture that both AGESA "Summit Ridge" and AGESA PiR (Pinnacle Ridge) series microcodes should be able to comfortably run. We spoke with sources familiar with AMD microcode, who revealed that this AGESA COMBO-AM4 0.0.7.2 is designed for the upcoming "Zen 2" microarchitecture, and its first socket AM4 implementation, codenamed "Matisse." AMD internal versions of AGESA with Matisse support begin with the version sequence 0.0.7.x., and as we head closer to formal launch of these chips, AMD could release a 1.0.0.0 version of "AGESA COMBO-AM4." For our B450 Gaming Pro Carbon AC, the BIOS version packing this new AGESA is v1.60, and we wager this board should now be able to run Ryzen "Matisse" engineering samples. Now, if we can only get our hands on one.
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10 Comments on MSI Rolls Out AMD 400-series BIOS Updates with "Zen 2" Microcode

#2
ironwolf
Heard the codename Valhalla pop up in a few articles.
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#3
btarunr
Editor & Senior Moderator
ironwolf said:
Codename Valhalla?
Valhalla is the name of the platform.
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#4
GinoLatino
But I want PCIe 4.0 chipset, to be a little future proof.
I guess new motherboards, will be out closer to launch.
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#5
btarunr
Editor & Senior Moderator
GinoLatino said:
But I want PCIe 4.0 chipset, to be a little future proof.
I guess new motherboards, will be out closer to launch.
500-series motherboards will give you gen 4.0. On 300 and 400-series your Matisse will put out gen 3.0. This is because its root-complex requires external redrivers only found on 500-series boards.
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#6
HwGeek
Please don't update your MB with this new Bios if you are using PBO.
TDC/EDC limits stays at stock levels and thus PBO will have no affect with the new bios!, I have tested it on Asus Prime X470 Pro(2700X) on day it came out (Many Asus boards got the update including B350/A320)and other Asus and MSI owners confirmed the same- PBO is buggy with this new bios and I am still waiting for Asus support.
https://www.overclock.net/forum/27894398-post160.html
https://www.overclock.net/forum/11-amd-motherboards/1690489-asus-prime-x470-pro-issues-successes-37.html
Downgrading the bios is not easy, and only AMD RYZEN can help after raising the TDC/EDC limits.

If PBO still works for you please share.
Posted on Reply
#7
looncraz
HwGeek said:
Please don't update your MB with this new Bios if you are using PBO.
TDC/EDC limits stays at stock levels and thus PBO will have no affect with the new bios!, I have tested it on Asus Prime X470 Pro(2700X) on day it came out (Many Asus boards got the update including B350/A320)and other Asus and MSI owners confirmed the same- PBO is buggy with this new bios and I am still waiting for Asus support.
https://www.overclock.net/forum/27894398-post160.html
https://www.overclock.net/forum/11-amd-motherboards/1690489-asus-prime-x470-pro-issues-successes-37.html
Downgrading the bios is not easy, and only AMD RYZEN can help after raising the TDC/EDC limits.

If PBO still works for you please share.
Precision Boost doesn't work at all on my system (Crosshair VI Hero) using BIOS 6808 (AGESA Combo-0.0.7.0).
Posted on Reply
#8
HwGeek
Please send ticket to ASUS so they take it in priority, this new Bios just disables PBO for all if I am not mistaken and they need to Warn users before downloading.
This is the current update from them, they're computer engineers Team still working on the issue:
I am writing to update you about your case, we are still researching a resolution for this issue. I appreciate your patience, I assure you that this issue is important to us and we will continue to work diligently get this resolved.
Too bad there is no Media attention to this Bug that affects all AM4 boards with the new bios-just searching "AGESA PBO" for last days shows many complaints.
Posted on Reply
#9
btarunr
Editor & Senior Moderator
HwGeek said:
Please don't update your MB with this new Bios if you are using PBO.
TDC/EDC limits stays at stock levels and thus PBO will have no affect with the new bios!, I have tested it on Asus Prime X470 Pro(2700X) on day it came out (Many Asus boards got the update including B350/A320)and other Asus and MSI owners confirmed the same- PBO is buggy with this new bios and I am still waiting for Asus support.
https://www.overclock.net/forum/27894398-post160.html
https://www.overclock.net/forum/11-amd-motherboards/1690489-asus-prime-x470-pro-issues-successes-37.html
Downgrading the bios is not easy, and only AMD RYZEN can help after raising the TDC/EDC limits.

If PBO still works for you please share.
MSI website has Chipset driver 18.50.xx

https://www.msi.com/Motherboard/support/B450-GAMING-PRO-CARBON-AC#down-driver
Posted on Reply
#10
HwGeek
Asus Prime X470Pro also has, but it was bios Bug, Todey Asus support sent me new 4602 Bios with AGESA 0072 that fixed the problem and PBO is working again, they will post it on official download page soon.

So if your X470 MB with the new Bios "broke" PBO option- contact support and see if they got new bios coming to fix the known bug.
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