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AMD AGESA Firmware Inadvertently Disables Cores On Some Ryzen 5 7600X CPUs
Whoops? The latest AGESA ComboAM5PI 1.0.0.4 firmware from AMD is more problematic than helpful. The firmware reportedly disables some cores on the Ryzen 5 7600X, prompting several motherboard vendors to remove the update from their websites.
One of the best CPUs, the Ryzen 5 7600X, is not universally affected by faulty firmware. All but the samples using a single-CCD design are unaffected. Despite the Ryzen 5 7600X's Hexa-core, 12-thread design, a single CCD is sufficient. However, two CCDs are hidden away in the chassis of some Ryzen 5 7600X processors. So, you can't magically get more cores because AMD fused off the extra CCD.
To achieve this silicon production maximization goal, chipmakers like AMD, Intel, and Nvidia routinely repurpose dies that aren't quite up to snuff for certain models into their budget offerings. So, the Ryzen 5 7600X has two CCDs. The same approach was used by AMD with the original Ryzen 7 5800X and Ryzen 5 5600X. The AGESA ComboAM5PI 1.0.0.4 firmware appears to be unable to differentiate between single-CCD and dual-CCD samples of the Ryzen 5 7600X. It's possible it misidentifies the CCD and shuts down a processor core as a result. .
Both MSI and ASRock have taken the firmware downloads for their X670 and B650 motherboards down from their respective product pages. However, the firmware is still available for download on some of Gigabyte's 600-series motherboard support pages, though you should stay far away from it.
When using the Ryzen 5 7600X, if you have upgraded the firmware on your motherboard and noticed a significant drop in performance after the upgrade, you should revert to the previous firmware. There will be a firmware update coming in the next few weeks that will implement the necessary fix.
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kanenas
Senior Member
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Senior Member
Posts: 477
Joined: 2019-07-07
#6091622 Posted on: 01/09/2023 10:10 AM
The problem is found only in 7600x which have 2 ccd one is (problematic-disabled).
The problem is found only in 7600x which have 2 ccd one is (problematic-disabled).
nosirrahx
Senior Member
Posts: 450
Joined: 2013-04-05
Senior Member
Posts: 450
Joined: 2013-04-05
#6091692 Posted on: 01/09/2023 02:42 PM
I wonder if AMD has gone down the same dark path that Intel has? Over on the Intel support forum (specifically for their NUCs) we are constantly running into serious bugs that they can't replicate because they do not do any physical hardware testing, its all simulated. In just the last year they claimed that they could not replicate (and then later fixed) a firmware update bug that could not see through RAID, a LAN driver that bricked a port under Windows 10 but not 11 and the Software Studio bug that sent rapid fire error 3 reports to the event logs.
I wonder if AMD has gone down the same dark path that Intel has? Over on the Intel support forum (specifically for their NUCs) we are constantly running into serious bugs that they can't replicate because they do not do any physical hardware testing, its all simulated. In just the last year they claimed that they could not replicate (and then later fixed) a firmware update bug that could not see through RAID, a LAN driver that bricked a port under Windows 10 but not 11 and the Software Studio bug that sent rapid fire error 3 reports to the event logs.
Horus-Anhur
Senior Member
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Joined: 2013-02-05
Senior Member
Posts: 6896
Joined: 2013-02-05
#6091694 Posted on: 01/09/2023 02:49 PM
These tech companies have to realize that having a good Q&A team can cost money, but saves a lot of headaches and a lot of money in the long run.
These tech companies have to realize that having a good Q&A team can cost money, but saves a lot of headaches and a lot of money in the long run.
Venix
Senior Member
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Joined: 2016-08-01
Senior Member
Posts: 3107
Joined: 2016-08-01
#6091696 Posted on: 01/09/2023 02:54 PM
The news to me is that 2 ccd's 7600x exist :/
The news to me is that 2 ccd's 7600x exist :/
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Senior Member
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Joined: 2014-07-21
Oh... great. And I thought Intel mitigations took away performance... here you could lose half?
Sounds like single package CPUs seem the only thing that really works...
I guess they need to patch this soon, future AGESA won't be an issue again.