AMD Pulls PCIe 4.0 Support on all non-X570 motherboards
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anticupidon
Objectively, AMD doesn't want to have this feature on older chipsets, how could they justify the new one, or the forecoming ones?
Now, having their new CPUs working on older chipsets/ motherboards is what they promised with AM4.
Doesn't necessarily bothers me.
rl66
Ryu5uzaku
Tbh they old ones "support" it sure. But not being native I think this is a good move anyways.
JamesSneed
schmidtbag
Seems to me AMD shot themselves in the foot for adding PCIe 4.0. A little ironic how people would be happier if they just stuck with 3.0.
I'm not sure I understand your question. What exactly needs justification? PCIe 4.0 (according to them) has stricter electrical tolerances. Newer boards (including cheaper ones) will have to be built to meet those tolerances. Of course, we just have to take their word for it, but as I said in yesterday's Gigabyte topic, AMD isn't the one defining the spec.
Their CPUs do work on older chipsets and motherboards as promised. They promised nothing about PCIe forward compatibility with older boards. And even then, you're still getting PCIe; it's not like they're dropping it entirely. Sure, it leaves a bitter taste that it's being artificially disabled, but assuming AMD isn't exaggerating the tolerances, you're probably better off not using PCIe 4.0 on a B450 board.
For consumer-grade stuff? Because I thought most of it was just SSDs and server hardware.
anticupidon
@schmidtbag was a rhetorical question.
And not at all well constructed.
Yes, AMD didn't promised PCI-E 4.0 compatibility with older boards, only CPUs.
And there's a benefit here on "older boards" for not having PCI-E 4.0.
Less bugs at BIOS level, and have them cheaper.
Those who want full benefits of the newest protocol, will go for X570.
D3M1G0D
This makes sense. It's like a bridge designed with a certain load in mind - even if that bridge could theoretically support a much heavier load, it would be unwise to allow it (if it fails, then you will the one held responsible). Likewise, even if certain previous-gen boards could support PCIe 4.0, AMD cannot officially support it, nor can they leave it up to the manufacturers - if something goes wrong, they will be the ones held liable.
Aura89
maddog55
i just bought a Ryzen 7 3700x and decided to change my Crosshair Hero v1 to a new Asus Strix 570 Gaming - E board.
i missed out the 2nd gen Zen to eventually upgrade to this setup.
Jayp
Denial
Hilbert Hagedoorn
Administrator
@jaggerwild - you just received three warnings with respective points for borderline trolling. A 4th one kicks you off these forums, grow up!
schmidtbag
kakiharaFRS
only decision that made sense for AMD, motheboard manufacturer only implemented this to have an advantage against other companies or has a "feature" to sell older chipset, certainly not as a 100% guaranteed and tested feature for the customer
anyways I'll link Hilbert excellent review on the Corsair 600 again https://www.guru3d.com/articles_pages/corsair_mp600_pcie_4_nvme_ssd_review,20.html
I actually had it in my basket and was ready to order except they didn't have any in stock now they do but I'm more than happy to keep my current 970pro as it's almost the same, if anything PCIE 4.0 highlighted the 970 evo plus that I totally missed and which seems the best for normal use like copying files or games
Aura89
waltc3
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.
Aura89
RooiKreef
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
schmidtbag