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AMD Pulls PCIe 4.0 Support on all non-X570 motherboards
Yesterday we reported that gigabyte is actively pulling inf PCI-Express 4.0 support from all non-X570 motherboards. AMD has now stepped it up and is has removed the feature from older chipsets in their latest AGESA firmwares.
AMD has drawn consequences from the one-sided efforts of the manufacturers in the matter of PCI Express 4.0 on motherboards with pre-X570 chipsets. Along with AGESA Combo-AM4 1.0.0.3 ABB the support will be removed.
The motherboard manufacturers have partially defied the requirements of AMD and released PCI-E 4.0 on motherboards with older chipsets. A recent updated AGESA firmware now removes PCI Express 4.0 support on all motherboards with pre-X570 chipsets.
The rollout via BIOS updates has recently been started. Among other things Gigabyte distributes corresponding updates with AGESA Combo-AM4 1.0.0.3 ABB and notes in the change notes the remote support of PCI-E Gen4 when using a Ryzen 3000 processor due to the new AGESA version. A similar reference can be found in the mainboard models GA-A320M-H and Gigabyte X470 Aorus Gaming 7 WiFi .
Several motherboard manufacturers have added PCI Express 4.0 motherboards with on B450- and X470 chipsets. AMD announced before the launch of Ryzen 3000 and the X570 platform that PCI-E 4.0 only would be available on X570 motherboards. The motherboard manufacturers, however, wanted to upgrade their product portfolio on their own.
The update in the form of AGESA Combo-AM4 1.0.0.3 ABB is also accompanied by further changes. According to AMD, smaller issues with Ryzen 3000 processors have been resolved. In addition, AMD has adopted the warning "Event 17, WHEA Logger" in Windows Event Viewer and XMP profile compatibility for memory.
Aura89
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#5698236 Posted on: 08/07/2019 08:11 PM
This is something i feel people are forgetting very easily. Before Zen 2/X570 was officially announced/released, there was speculation that PCI-Express 4.0 working on select motherboards that were not x570. AMD shut this down in the beginning of June, one month and a week almost before the release.
There's just Intel fanboys/employees that are trying to make it sound as though the story is different and against AMD.
Indeed, before 7/7 AMD had announced publicly that they would *not* be supporting PCIe4 on pre-x570 motherboards, so this is also no surprise.
This is something i feel people are forgetting very easily. Before Zen 2/X570 was officially announced/released, there was speculation that PCI-Express 4.0 working on select motherboards that were not x570. AMD shut this down in the beginning of June, one month and a week almost before the release.
There's just Intel fanboys/employees that are trying to make it sound as though the story is different and against AMD.
RooiKreef
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#5698238 Posted on: 08/07/2019 08:12 PM
Personally I think this is more a matter of people not really buying into the whole expensive X570 platform for virtually no gain to X470. So they want to force people to buy X570.
Personally I think this is more a matter of people not really buying into the whole expensive X570 platform for virtually no gain to X470. So they want to force people to buy X570.
Aura89
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#5698240 Posted on: 08/07/2019 08:17 PM
Yes, totally logical. That's why the x570 has a chipset that on most motherboards require a chipset fan, something people don't generally want. But hey all the motherboard manufacturers are just adding something that's not required that will make people not buy it for no reason, and PCI-Express 4.0 absolutely works without it, because that's a smart business move....
The whole "I don't buy it" statement would make a lot more sense if the fan wasn't borderline required on these chipsets, otherwise people who state it are just stating they they think the motherboard manufacturers are making their products less desirable and more expensive to make for literally no reason, as if companies would spend more money and make decisions that go against their sales.....
Personally I think this is more a matter of people not really buying into the whole expensive X570 platform for virtually no gain to X470. So they want to force people to buy X570.
Yes, totally logical. That's why the x570 has a chipset that on most motherboards require a chipset fan, something people don't generally want. But hey all the motherboard manufacturers are just adding something that's not required that will make people not buy it for no reason, and PCI-Express 4.0 absolutely works without it, because that's a smart business move....
The whole "I don't buy it" statement would make a lot more sense if the fan wasn't borderline required on these chipsets, otherwise people who state it are just stating they they think the motherboard manufacturers are making their products less desirable and more expensive to make for literally no reason, as if companies would spend more money and make decisions that go against their sales.....
schmidtbag
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#5698241 Posted on: 08/07/2019 08:19 PM
Same reason why they enabled core unlocking back in the Athlon/Phenom II days - there was a good chance unlocking more cores wasn't going to yield a good/usable experience, because those cores were locked away for a reason. But people opted for it anyway. I'm sure some of these motherboard manufacturers are just trying to get rid of old stock. As of right now, there are hardly any PCIe 4.0 devices to test with and by the time there will be, the warranty might end (and for customers who bought the board prior to Zen 2, the warranty is likely already over).
People like having/doing things when they're told they can't, and they retaliate twice as hard when they actually got to do/get what they wanted, only to have it taken away. This is why underage drinking exists lol.
But you said it yourself - there's virtually no gain. Nothing is stopping you from going to X470 for a lower price with a minimal loss. There's backward compatibility, so you're not forced to do anything.
AMD never supported PCIe4 on pre-x570 motherboards. So, they couldn't have "pulled" it since they never supported it. Indeed, before 7/7 AMD had announced publicly that they would *not* be supporting PCIe4 on pre-x570 motherboards, so this is also no surprise. As GB found after attempting to implement it on older chipset boards where it didn't work--PCIe4 needs a lot more than a chipset to function properly. Basically, trying to implement PCIe4 into a motherboard never designed for PCIe4 was an experiment run by the motherboard OEMs--never sanctioned by AMD. It's difficult to understand why the motherboard vendors did that, actually! I imagine they'd welcome a million x370/x470 motherboard warranty returns because "PCIe4 mode doesn't work" about as much as a hole in the head.... 
I mean, it was the motherboard vendors themselves who stated publicly that the x570 mboards would be "more expensive" because they had to be made to more exacting requirements because of the need to preserve PCIex4 signal integrity! I'm baffled as to why the motherboard OEMs would even try this.
I mean, it was the motherboard vendors themselves who stated publicly that the x570 mboards would be "more expensive" because they had to be made to more exacting requirements because of the need to preserve PCIex4 signal integrity! I'm baffled as to why the motherboard OEMs would even try this.Same reason why they enabled core unlocking back in the Athlon/Phenom II days - there was a good chance unlocking more cores wasn't going to yield a good/usable experience, because those cores were locked away for a reason. But people opted for it anyway. I'm sure some of these motherboard manufacturers are just trying to get rid of old stock. As of right now, there are hardly any PCIe 4.0 devices to test with and by the time there will be, the warranty might end (and for customers who bought the board prior to Zen 2, the warranty is likely already over).
People like having/doing things when they're told they can't, and they retaliate twice as hard when they actually got to do/get what they wanted, only to have it taken away. This is why underage drinking exists lol.
Personally I think this is more a matter of people not really buying into the whole expensive X570 platform for virtually no gain to X470. So they want to force people to buy X570.
But you said it yourself - there's virtually no gain. Nothing is stopping you from going to X470 for a lower price with a minimal loss. There's backward compatibility, so you're not forced to do anything.
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AMD never supported PCIe4 on pre-x570 motherboards. So, they couldn't have "pulled" it since they never supported it. Indeed, before 7/7 AMD had announced publicly that they would *not* be supporting PCIe4 on pre-x570 motherboards, so this is also no surprise. As GB found after attempting to implement it on older chipset boards where it didn't work--PCIe4 needs a lot more than a chipset to function properly. Basically, trying to implement PCIe4 into a motherboard never designed for PCIe4 was an experiment run by the motherboard OEMs--never sanctioned by AMD. It's difficult to understand why the motherboard vendors did that, actually! I imagine they'd welcome a million x370/x470 motherboard warranty returns because "PCIe4 mode doesn't work" about as much as a hole in the head....