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Gigabyte Z490 Vision D (Thunderbolt 3) + i5-10400 + AMD RX 580

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Hi all,

I post a question here as it's a very active and knowledgeable thread.
Basically I have an ASRock RX 5500 XT 8GB plugged into a MSI Z490-A PRO.
All good but the video card PCI three doesn't show any naming but it shows pci-bridge@0 (see attachment), this way I'm unable to properly attach the RX 5500 XT SSDT.
Do you know how to solve the issue?
Thanks a lot!
 

Attachments

  • Schermata 2021-09-29 alle 15.23.08.png
    Schermata 2021-09-29 alle 15.23.08.png
    1.4 MB · Views: 26

CaseySJ

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Asus ProArt Z690-Creator
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** Some Tidbits on Next Generation **


With Z490 inventories drying up and Z590 not being a compelling upgrade, we can look ahead to November (around the 19th) when Intel is expected to release their 12th Generation desktop processors, Alder Lake, and the top-end chipset, Z690. And before saying another word, it must be mentioned that there's no guarantee either of these will work with macOS. But they are the next generation and worth examining.

A leaked image of the Z690 chipset reveals some especially interesting features:
  • PCIe 5.0 (16 lanes from CPU)
  • DDR5 memory support
  • x8 link between CPU and chipset versus x4 today, but some questions remain on the exact meaning of x8 DMI 4.0
  • 5Gbps Ethernet tied to chipset (optional feature for motherboard vendors to choose)
  • WiFi 7 also known as 802.11be. Some of the benefits (source):
    • Will this be available at launch using a Draft Spec? Most likely not. Z690 will start with WiFi 6E.
    • Multi-band/multi-channel aggregation and operation to deliver higher spectrum and power efficiency
    • Better interference mitigations
    • Higher capacity density
    • Higher cost efficiency
    • Support up to 30Gbps throughput, roughly three times faster than Wi-Fi 6
    • Support of 320 MHz transmissions, which is double the 160 MHz of 802.11ax
    • Release date of WiFi 7 spec is 2024

Intel-Z690-Chipset-1.jpg


Alder Lake CPUs:
  • Hybrid design with High Performance cores (P-Cores) and High Efficiency cores (E-Cores)
  • High performances P-Cores:
    • Golden Cove architecture that is an update to:
      • Sunny Cove (Ice Lake processors)
      • Willow Cove (Tiger Lake processors)
      • Cypress Cove (Rocket Lake processors)
    • Hyper-threaded
  • High efficiency E-Cores:
    • Gracemont architecture based on Intel Atom
    • Not hyper-threaded
  • Configurations:
    • Alder Lake-S: Desktop PCs
    • Alder Lake-P: High-performance notebooks
    • Alder Lake-M: Low-power devices
  • Alder Lake-S Desktop Processor Configurations:
Model P-Cores E-Cores Physical Cores Total Threads
i9-12900K 8 8 16 24 (P-Cores x 2 + E-Cores)
i7-12700K 8 4 12 20 (P-Cores x 2 + E-Cores)
i5-12600K 6 4 10 16 (P-Cores x 2 + E-Cores)

(Only P-Cores support hyper-threading.)
 
Last edited:

CaseySJ

Moderator
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Hi all,

I post a question here as it's a very active and knowledgeable thread.
Basically I have an ASRock RX 5500 XT 8GB plugged into a MSI Z490-A PRO.
All good but the video card PCI three doesn't show any naming but it shows pci-bridge@0 (see attachment), this way I'm unable to properly attach the RX 5500 XT SSDT.
Do you know how to solve the issue?
Thanks a lot!
Which RX 550 XT SSDT are you trying to attach?
 
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Which RX 550 XT SSDT are you trying to attach?
I've attached the SSDT.
It's a RX 5500 XT 8GB and not a RX 550.

What you see in IOReg in the previous message is the system without ANY SSDT.
 

Attachments

  • SSDT-RX 5500 XT-Version 1.0.aml.zip
    1.1 KB · Views: 15

CaseySJ

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I've attached the SSDT.
It's a RX 5500 XT 8GB and not a RX 550.

What you see in IOReg in the previous message is the system without ANY SSDT.
Please try attached Version 2.
 

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  • SSDT-RX 5500 XT-Version 2.0.aml
    1.2 KB · Views: 17
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Please try attached Version 2.
Hi there,

thanks a lot for your reply.
Still the SSDT doesn't load.
You still get those pci-bridge@0. The SSDT doesn't have any name to attach to.
You, for example, don't have the Device PRP1. You have pci-bridge@0.
Unless you don't have some names instead of those pci-bridge@0 the SSDT doesn't attach.
Is there a way to turn those pci-bridge@0 into something of 4 letters?

Thanks again.
 

CaseySJ

Moderator
Joined
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Messages
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Motherboard
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Hi there,

thanks a lot for your reply.
Still the SSDT doesn't load.
You still get those pci-bridge@0. The SSDT doesn't have any name to attach to.
You, for example, don't have the Device PRP1. You have pci-bridge@0.
Unless you don't have some names instead of those pci-bridge@0 the SSDT doesn't attach.
Is there a way to turn those pci-bridge@0 into something of 4 letters?

Thanks again.
Two requests:
  1. Screenshot of the same section of IORegistryExplorer as last time.
  2. Run this command in Terminal log show --last boot | head -1500 > ~/Documents/bootlog-1.txt, which will create a file in Documents folder called bootlog-1.txt. Post that file.
Unless you don't have some names instead of those pci-bridge@0 the SSDT doesn't attach.
Is there a way to turn those pci-bridge@0 into something of 4 letters?
The Version 2 SSDT is actually doing exactly that...or trying to.

Also try V3 attached below, which is an optimization of the previous V2.
 

Attachments

  • SSDT-RX-5500-XT-V3.aml
    1.2 KB · Views: 14
Last edited:
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Two requests:
  1. Screenshot of the same section of IORegistryExplorer as last time.
  2. Run this command in Terminal log show --last boot | head -1500 > ~/Documents/bootlog-1.txt, which will create a file in Documents folder called bootlog-1.txt. Post that file.

The Version 2 SSDT is actually doing exactly that...or trying to.

Also try V3 attached below, which is an optimization of the previous V2.
Here are the 2 requested files.
I let you know about the V3 SSDT in a moment.
Thanks a lot!

Update:
The V3 SSDT doesn't make any difference. Still those pci-bridge@1/pci-bridge@0
 

Attachments

  • bootlog-1.txt
    252.2 KB · Views: 16
  • PCareMac.ioreg
    4.7 MB · Views: 17

CaseySJ

Moderator
Joined
Nov 11, 2018
Messages
20,092
Motherboard
Asus ProArt Z690-Creator
CPU
i7-12700K
Graphics
RX 6800 XT
Mac
  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
  1. iOS
Here are the 2 requested files.
I let you know about the V3 SSDT in a moment.
Thanks a lot!

Update:
The V3 SSDT doesn't make any difference. Still those pci-bridge@1/pci-bridge@0
Please try V4. If it fails I'd like to look at the System DSDT from MaciASL.
 

Attachments

  • SSDT-RX-5500-XT-V4.aml
    1.2 KB · Views: 14
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Messages
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** Some Tidbits on Next Generation **


With Z490 inventories drying up and Z590 not being a compelling upgrade, we can look ahead to November (around the 19th) when Intel is expected to release their 12th Generation desktop processors, Alder Lake, and the top-end chipset, Z690. And before saying another word, it must be mentioned that there's no guarantee either of these will work with macOS. But they are the next generation and worth examining.

A leaked image of the Z690 chipset reveals some especially interesting features:
  • PCIe 5.0 (16 lanes from CPU)
  • DDR5 memory support
  • x8 link between CPU and chipset versus x4 today, but some questions remain on the exact meaning of x8 DMI 4.0
  • 5Gbps Ethernet tied to chipset (optional feature for motherboard vendors to choose)
  • WiFi 7 also known as 802.11be. Some of the benefits (source):
    • Will this be available at launch using a Draft Spec? Most likely not. Z690 will start with WiFi 6E.
    • Multi-band/multi-channel aggregation and operation to deliver higher spectrum and power efficiency
    • Better interference mitigations
    • Higher capacity density
    • Higher cost efficiency
    • Support up to 30Gbps throughput, roughly three times faster than Wi-Fi 6
    • Support of 320 MHz transmissions, which is double the 160 MHz of 802.11ax
    • Release date of WiFi 7 spec is 2024

View attachment 529863

Alder Lake CPUs:
  • Hybrid design with High Performance cores (P-Cores) and High Efficiency cores (E-Cores)
  • High performances P-Cores: Golden Cove architecture that is an update to:
    • Sunny Cove (Ice Lake processors)
    • Willow Cove (Tiger Lake processors)
    • Cypress Cove (Rocket Lake processors)
  • High efficiency E-Cores: Gracemont architecture based on Intel Atom
  • Configurations:
    • Alder Lake-S: Desktop PCs
    • Alder Lake-P: High-performance notebooks
    • Alder Lake-M: Low-power devices
  • Alder Lake-S Desktop Processor Configurations:
Model P-Cores E-Cores Physical Cores Total Threads
i9-12900K 8 8 16 24 (P-Cores x 2 + E-Cores)
i7-12700K 8 4 12 20 (P-Cores x 2 + E-Cores)
i5-12600K 6 4 10 16 (P-Cores x 2 + E-Cores)
Will be interesting to see if or how alder lake is compatible with macOS, and how the macOS kernel will schedule threads on the hybrid architecture (P and E cores).

Assuming that macOS will indeed boot on z690/Alder Lake, I’m curious if there will be latency problems or will the experience be seamless ? Given that Alder Lake is an x86 processor with the same instruction set as its predecessors (sans AVX512), I’d expect macOS to work, but only time will tell. I suppose if there are major problems with the E cores, we could always turn them off in the bios.


I think x8 dmi4.0 means a link between the cpu and chipset operating at x8 pcie4.0 speeds. But only time will tell.

Z690 seems like it will support a ton of I/o with a combination of pcie4.0 lanes and pcie3.0 lanes. Seems like there will be more than enough bandwidth for 2-3 pcie4.0 nvme drives, all sata ports on (sometimes sata ports are disabled depending on whether certain pcie slots or nvme slots are utilized), a ton of USB ports, and on certain boards, enough bandwidth leftover to externalize the pcie bus via thunderbolt4.

Seems that alder lake will on overage bring a 20% IPC uplift above Rocket Lake / Tiger Lake, and even higher gains in multithreaded performance. I’m curious to know the performance of the E cores. All in all seems like a solid upgrade, probably Intel’s biggest in years, and this product might indeed be the start of Intel coming back. Too bad Intel lost Apple and our x86 macOS days might be limited in number. But if rumors are true then we have even more wild upgrades to look forward to in the coming years: Raptor Lake next year, Meteor Lake, then some future Lake like Arrow Lake and Lunar Lake.

However there are downsides: infrastructure upgrades. The new LGA1700 socket means alder lake is now rectangular in shape and no longer square. Thus our existing coolers at minimum will need a new retention bracket. I hope we also don’t need new coolers for optimum cooling given the difference in Alder Lake’s Z-height (compared to predecessor processors). If we opt for a ddr5 motherboard then we also have to get new memory, although some boards will come with ddr4.
 
Last edited:
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