Gigabyte releases new firmware with AMD's revised AGESA 188.8.131.52 ABB microcode for the brand's AMD 300-and 400-series motherboards. The latest microcode addresses a couple of issues with Ryzen 3000-series processors, but it also removes PCIe 4.0 functionality.
By now, it should be common knowledge that AMD doesn't intend to enable PCIe 4.0 on pre-X570 motherboards due to the physical limitations. However, motherboard vendors, including Asus, Biostar, and Gigabyte previously enabled the feature against AMD's wishes. It seems that our luck has finally run out.
The changelog for the latest firmware for Gigabyte motherboards clearly specifies that the PCIe 4.0 option has been removed. The change is effective as of the F42a BIOS and affects all Gigabyte 300-and 400-series products starting from the flagship X470 motherboards down to the budget A320 offerings.
1. Update AGESA 184.108.40.206 ABB2. Improve Destiny 2 gaming compatibility 3. Remove PCIe Gen4 support when using a 3rd Gen Ryzen (Matisse) CPU
Either the AGESA 220.127.116.11 ABB microcode is the culprit here, or Gigabyte disabled PCIe 4.0 functionality out of its own free will. For now, it's impossible to tell because Gigabyte is the only motherboard manufacturer to deploy new firmware with the updated microcode. Once other vendors begin releasing new firmwares for their products, we'll be able to find out whether it was AMD or Gigabyte that pulled the trigger.
One way or the other, pre-X570 motherboard owners are certainly at a very important crossroad right now. Upgrading implicates losing the PCIe 4.0 feature while not upgrading means losing out on a lot, such as new features, bug fixes, or even performance enhancements.
Its better to avoid potential issues rather than enable something and increase potential issues.
This is the kind of behavior I am used to see from Intel (extract as much money as possible from customers), but until now not from AMD. It seems success always corrupts in one way or another.
That being said, i don't support AMD doing this. It is a very intel move, and not something i like
Wait you mean preventing something that might not work properly and cause you issues is an Intel move?
AMD is acting like a company. Of course they would prefer you buy a X570 board for your shiny new Ryzen chip. They have shareholders to please after all.
And its not much an Intel move. Intel just tends to build a chipset and CPU around each other. I think thats the best way to go. Besides how often do you need to actually upgrade your CPU these days? If every other year its too much for little to no gains.
So instead of allowing something that could cause people potential issues and end up in a lawsuit, since they would have knowingly allowed these issues to persist, they are removing support so people don't have issues. Seems like a proper thing to do to me.
People sue over the dumbest things. I could see it being possible based on them knowing there are potential issues and leaving it enabled. Having knowledge of it causing issues and leaving it on could cause it.
That said I am glad they decided to disable it as there is a good reason for AMD to do so. Backwards compatibility is one thing but pushing a new standard on something that wasn't built for it originally is another and I have almost never seen that in a board ever.
1. The PCI-E Gen 4 option still there to choose it.
2. The high Vcore, high Temps, and high CPU Fan noise, those became a bit better after updating Bios and installing the new Chipset Drivers from AMD page (Of course I still had to manually disable PBO from Bios, which is kinda useless with stock cooler - at least on my case with the air flow I have - and I have to set "Power Supply Idle Control" option to "Typical Current Idle"). This is choosing the "Ryzen Power Balanced Plan"
3. Fun fact is like kinda nothing changed for me, cause I got the same results than before (without updating BIOS nor Drivers), and just setting those options in BIOS plus choosing "Windows Balanced Power Plan"
I think AMD, Gigabyte (in my case) and Microsoft need to put some more work on this to fix this issues.
It's not clear whether this feature would even work reliably on these boards, and in any case, the benefits of PCIe 4.0 for home systems will likely be quite limited for a number of years.