Gigabyte Aorus X470 now running at PCIe4

killroy67

[H]ard|Gawd
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So here is the really cool thing I noticed, my X470 is now PCIe4 capable after I put my new 3900X in, HWinfo64 reports the PCIE 16 slot and others running at PCIe4, 16GT.
 
As cool as it would be to have, I don't have any bits or bobs that can use PCIE4 yet anyway, so maybe I'll upgrade my x470 Taichi to a x570 board when those accessories are more readily available down the road.

For me it's /shrug right now.
 
I saw this mentioned for the Crosshair vii as well.

If it's not intentionally enabled then I would be cautious using it though since PCIe 4.0 requires much heavier duty traces, I'd be concerned about potentially burning them out if they're not up to the task.
 
As cool as it would be to have, I don't have any bits or bobs that can use PCIE4 yet anyway, so maybe I'll upgrade my x470 Taichi to a x570 board when those accessories are more readily available down the road.

For me it's /shrug right now.
By that time x670 will be a thing
 
I saw this mentioned for the Crosshair vii as well.

If it's not intentionally enabled then I would be cautious using it though since PCIe 4.0 requires much heavier duty traces, I'd be concerned about potentially burning them out if they're not up to the task.
Actually the limit is 6” length at current pci-e 3 specs. So any slot that has a 6 inch trace or short is physically safe per spec. Doesn’t mean manufacturers will enable it though.
 
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I saw this mentioned for the Crosshair vii as well.

If it's not intentionally enabled then I would be cautious using it though since PCIe 4.0 requires much heavier duty traces, I'd be concerned about potentially burning them out if they're not up to the task.
Gigabyte enabled it with the F40 bios, and of course once you installed a 3000 series cpu. I see now ASUS is now enabling it on certain X470 and B450 boards. I would imagine or would like to believe they tested it in house. I find it doubtful if they enabled PCIe 4 knowing it would blow up motherboards.
 
Actually the limit is 6” length at current pci-e 3 specs. So any slot that has a 6 inch trace or short is physically safe enough. Doesn’t mean manufacturers will enable it though.

Good to know, I wasn't sure what the exact requirement was I just knew that it had changed because I know at least some of the x570 boards have beefed up trace layers for that reason.

Gigabyte enabled it with the F40 bios, and of course once you installed a 3000 series cpu. I see now ASUS is now enabling it on certain X470 and B450 boards. I would imagine or would like to believe they tested it in house. I find it doubtful if they enabled PCIe 4 knowing it would blow up motherboards.

I've seen speculation that it's not intentional and haven't seen any official word so I figure a little caution is warranted, if it's intentional then I'm sure it's safe.
 
Good to know, I wasn't sure what the exact requirement was I just knew that it had changed because I know at least some of the x570 boards have beefed up trace layers for that reason.



I've seen speculation that it's not intentional and haven't seen any official word so I figure a little caution is warranted, if it's intentional then I'm sure it's safe.
Yes if there are any additional slots rated for 4.0, they would have to have traces beefed up over 6 inches. I’m glad we can run 4.0 on our x470’s!
 
I'd recommend not updating your board if it is working fine right now. AMD has stated it will be hard disabled in their binary moving forward.
 
I'd recommend not updating your board if it is working fine right now. AMD has stated it will be hard disabled in their binary moving forward.

Update your boards! It wont hurt anything. Just change the toggle in your bios from pcie 4.0 to pcie 3.0.

I just gamed last night on b450 Aorus M on my 5700xt and 3600 @ pcie 4.0 (as reported in bios and gpuz) and it was rock solid stable.
 
Apparently none of it matters if its true that AMD will strip out PCIe 4 in future AEGSA updates. They have to justify the hefty price for the X570 boards somehow.
 
Apparently none of it matters if its true that AMD will strip out PCIe 4 in future AEGSA updates. They have to justify the hefty price for the X570 boards somehow.
Or they don’t want to risk stability issues with boards that are cheaply made or just plain suck.
 
Or they don’t want to risk stability issues with boards that are cheaply made or just plain suck.

Maybe, but that would only be know through testing. I would like to believe Gigabyte and Asus would have tested the boards with PCIe 4 enabled first before enabling it. I saw a article at Guru of a B450 board using a PCIe 4 SSD drive performing very well at PCIe 4 numbers.
 
Maybe, but that would only be know through testing. I would like to believe Gigabyte and Asus would have tested the boards with PCIe 4 enabled first before enabling it. I saw a article at Guru of a B450 board using a PCIe 4 SSD drive performing very well at PCIe 4 numbers.
And amd would have to rely on manufacturers to test old hardware and certify them.

So I could see why AMD wouldn’t want to risk it.

I’ve seen plenty of posts of people running pcie 4 on x470 boards. Doesn’t mean they will all perform well or be stable.

With AMD doing so well, I understand the hesitation. Intel is looking for any ammo. And even more so, the fan boy club is looking for ammo.

Much of this hobby is perception to the average consumer. For them perception is reality. Reality is money.
 
And amd would have to rely on manufacturers to test old hardware and certify them.

So I could see why AMD wouldn’t want to risk it.

I’ve seen plenty of posts of people running pcie 4 on x470 boards. Doesn’t mean they will all perform well or be stable.

With AMD doing so well, I understand the hesitation. Intel is looking for any ammo. And even more so, the fan boy club is looking for ammo.

Much of this hobby is perception to the average consumer. For them perception is reality. Reality is money.

I don’t disagree with you, I don’t see any benefit to PCIe 4 at this point anyhow. That said I do think it is interesting all the same. There isn’t much that separates a good X470 board from a X570 board at this time other than price.
 
I don’t disagree with you, I don’t see any benefit to PCIe 4 at this point anyhow. That said I do think it is interesting all the same. There isn’t much that separates a good X470 board from a X570 board at this time other than price.
I agree entirely. I don’t see the need to upgrade to pcie 4 or to x570. Maybe in a generation or two.
 
Update your boards! It wont hurt anything. Just change the toggle in your bios from pcie 4.0 to pcie 3.0.

I just gamed last night on b450 Aorus M on my 5700xt and 3600 @ pcie 4.0 (as reported in bios and gpuz) and it was rock solid stable.

No, because at a certain point when AMD patches it out of their AEGSA binary that they send to the motherboard makers you'll lose it. If you're stable with the current beta BIOS's that allow the 3000 series to run I wouldn't update again in the future. I know I won't be, unless there is a substantial enough bug that requires me to do so.
 
No, because at a certain point when AMD patches it out of their AEGSA binary that they send to the motherboard makers you'll lose it. If you're stable with the current beta BIOS's that allow the 3000 series to run I wouldn't update again in the future. I know I won't be, unless there is a substantial enough bug that requires me to do so.
Exactly this. It works currently. It won’t in the future and that’s a fact according to AMD. If it works now, and is stable, don’t update anything.
 
No, because at a certain point when AMD patches it out of their AEGSA binary that they send to the motherboard makers you'll lose it. If you're stable with the current beta BIOS's that allow the 3000 series to run I wouldn't update again in the future. I know I won't be, unless there is a substantial enough bug that requires me to do so.

I'm not even sure if the latest bios update F40 from Gigabyte is beta, it only says full 3rd Gen Ryzen support, which has been out since May of 2019. I don't much care if my board has or has not PCIe4 at this point, but I do think this needs to be tested to see if it truly does work and without issue. For AMD just to say they will remove it in a future update is kind of crap. Seriously if it does work, and works well without issue, then why are the X570 boards so much?
 
I'm not even sure if the latest bios update F40 from Gigabyte is beta, it only says full 3rd Gen Ryzen support, which has been out since May of 2019. I don't much care if my board has or has not PCIe4 at this point, but I do think this needs to be tested to see if it truly does work and without issue. For AMD just to say they will remove it in a future update is kind of crap. Seriously if it does work, and works well without issue, then why are the X570 boards so much?

X570 costs more because they are at a minimum now on par with the mid-high end boards that you could get with X470. The gaming pro carbon for instance is still $180 and from a power/build quality standpoint can do everything a decent X570 board can, and this is about the cheapest X470 board available out there that is up to specs from a VRM/Power standpoint.

As to why AMD isn't leaving the option up to manufacturers for what will get PCI-E 4.0 support or not.. I have no idea. It makes no sense to me. It could be AMD doesn't trust the various manufacturers to quality control what last-gen boards run it fine or not, and AMD just wants to avoid the issue all together. If you ask me, however, it's a pretty obvious attempt at planned obsolescence so they can sell more X570 boards.

It is crap though, because a higher-end X470 board with good VRM/Power and build quality is for all purposes not a whole lot different from a $200 range X570 board.
 
Exactly this. It works currently. It won’t in the future and that’s a fact according to AMD. If it works now, and is stable, don’t update anything.

No, because at a certain point when AMD patches it out of their AEGSA binary that they send to the motherboard makers you'll lose it. If you're stable with the current beta BIOS's that allow the 3000 series to run I wouldn't update again in the future. I know I won't be, unless there is a substantial enough bug that requires me to do so.

That makes no sense what you're saying you're telling people not to Flash to the latest bios because of pcie 4, yet you HAVE to have the latest bios in order to use the zen 2 chips on 400 series boards, this makes no sense what you're claiming.

You MUST use the latest agesa to enable zen 2. And if it currently uses pcie4 then you have either live with it or turn it off regardless of what is released next.

Unless you people are installing these chips in 400 series boards stop arm chair quarterbacking what people should be doing.

I had to buy a 200ge to flash my b450 gigabyte and guess what there is no other option but the current agesa. Pcie4 is just there. There is no other bios available to use zen 2 and have no pcie4.

Sorry you guys are fake newsing the piss out of this.
 
That makes no sense what you're saying you're telling people not to Flash to the latest bios because of pcie 4, yet you HAVE to have the latest bios in order to use the zen 2 chips on 400 series boards, this makes no sense what you're claiming.

You MUST use the latest agesa to enable zen 2. And if it currently uses pcie4 then you have either live with it or turn it off regardless of what is released next.

Unless you people are installing these chips in 400 series boards stop arm chair quarterbacking what people should be doing.

I had to buy a 200ge to flash my b450 gigabyte and guess what there is no other option but the current agesa. Pcie4 is just there. There is no other bios available to use zen 2 and have no pcie4.

Sorry you guys are fake newsing the piss out of this.

No, not really.

The current beta BIOS's with the current AEGSA code work with PCIE 4 and Zen 2 on X470, etc. Future BIOS's with newer AEGSA from AMD will have PCI-E 4.0 on anything other than x570 hard disabled / removed. This is literally what AMD has stated.

It's really that simple. No one is 'fake newsing' anything here.
 
I don’t get why this is a big deal. PCIe 4.0 offers nothing to the average consumer with hardware on the market at the moment. All you are doing is potentially increasing your chance of failure
 
No, not really.

The current beta BIOS's with the current AEGSA code work with PCIE 4 and Zen 2 on X470, etc. Future BIOS's with newer AEGSA from AMD will have PCI-E 4.0 on anything other than x570 hard disabled / removed. This is literally what AMD has stated.

It's really that simple. No one is 'fake newsing' anything here.

that's never been AMD's style, even when AMD officially said there would be no performance boost overdrive(PBO) on am4 and motherboard manufactures still added it anyways they didn't force them to remove it.. they'll continue to leave it up to the manufactures on whether or not they want to hurt their own sales on x570 to continue supporting pcie 4.0 on x470/b450 boards.. if it does ever get removed it'll be the AIB's, not AMD that removes the support.

I don’t get why this is a big deal. PCIe 4.0 offers nothing to the average consumer with hardware on the market at the moment. All you are doing is potentially increasing your chance of failure

agree, unless it's a board that happens to have pcie 4.0 m.2 support.
 
I may 'upgrade' from x370 to x570 purely for RAM support and ram OC.
 
agree, unless it's a board that happens to have pcie 4.0 m.2 support.

Even then...
5gig a sec vs 3.5gig a sec really doesn't make that much difference unless you are moving big files around for a good proportion of the time, it's just a number (same as ram speeds)
 
Update your boards! It wont hurt anything. Just change the toggle in your bios from pcie 4.0 to pcie 3.0.

I just gamed last night on b450 Aorus M on my 5700xt and 3600 @ pcie 4.0 (as reported in bios and gpuz) and it was rock solid stable.


I'd imagine it depends on how much of each PCIe3.0 lane, you are stressing to PCIe4.0. If you run 1GPU and SATA SSD, you probably get less problems than with more stuff hooked to the PCI bus, given the x470 Motherboard designs in contrast to the x570's design.

And of course, being aware of the potential hazards in doing so and will monitor it.. or know if it goes kaboom... end-user fault!
 
And of course, being aware of the potential hazards in doing so and will monitor it.. or know if it goes kaboom... end-user fault!


What hazards are there?

I'm not making fun but the lack of electronics and electrical physics knowledge on the forum is astoundingly alarming.

Pcie is a serial bus with a 3 layer (protocol layers) design similar to ethernet layering.

The difference in specifications has nothing to do with voltage or power or wattage or thermal output. It all has to do with bidirectional serialized data transfer rates based on a timing clock. The physics breakdown where there are not enough layers of metal to reduce emi and crosstalk interference. The biggest danger of running pcie4 on a thin, less metal layered board, is you have signal loss which results in latency increases and overhead because yes pcie like ethernet has error correction. Your not gonna burn a black smoldering hole in your motherboard or GPU. Lots of people in this forum have said some incredible stuff man.
 
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