Catalina 10.15.7 on i9-10900k

Catalina 10.15.7 on i9-10900k

I wouldn't have been able to do it without this subreddit! Thanks to everyone here!

Motherboard: Gigabyte Z490I Aorus Ultra (Mini-ITX)

CPU: Intel i9-10900k

GPU: MSI Radeon RX 570 8GB

Cooler: NZXT Kraken X53

Case: NXZT H510i

OpenCore: 0.6.2

What's working: USB, Audio, M.2 SSDs (both front and back), SATA SSDs, iServices, Ethernet (only tested up to 1Gbps)

What's not working: WiFi, Bluetooth, iGPU.

I just followed the OpenCore guide for Comet Lake, and it was pretty much working from there. The only hiccup I had was with Ethernet -- I ended up having to making the following adjustments:

  1. Add the IntelMausi.kext kernel extension (in the OpenCore guide, it says "No kext is required", but I couldn't get it working without it)
  2. Add FakePCIID.kext and FakePCIID_Intel_I225-V.kext (got this hint from here, got the actual kext from here -- I couldn't find it anywhere else though...)
  3. Change the path in config.plist from PciRoot(0x0)/Pci(0x1C,0x1)/Pci(0x0,0x0) to PciRoot(0x0)/Pci(0x1C,0x4)/Pci(0x0,0x0)

With those changes, Ethernet has been 98% stable for me. Especially using the debug kexts while I was still doing the initial setups, I would get connection drops and had some pretty bad performance problems, but swapping everything with the release builds fixed the reliability problems. I still get a disconnect or two after boot, but after it's been up for awhile it works perfectly.

I didn't do any USB remapping -- I saw some posts of other people with the same motherboard saying they needed to do it, but it's working for now.

The main reason I built this in the first place was because my 16" MBP was overheating too much for my liking -- work that would have been thermally throttling the laptop (90C+) sits at a nice 28C now (ambient 24C). It was my first foray in to liquid cooling, and I'm really impressed. The AIO was a little more complex to install than an air cooler, but not by that much.

Again, thanks everyone! I'll probably be back when it's time to update it...

submitted by /u/sleepy_keita
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