FIX How to fix Unknown CPU Error in About This Mac (Clover)

Cyberdevs

Supervisor
Staff member
Joined
Aug 29, 2018
Motherboard
GA-Z170X-Gaming 5
CPU
Intel Core i7 6700K
Graphics
AMD Radeon Pro 580
OS X/macOS
10.15.x
Bootloader
  1. Clover (UEFI)
  2. OpenCore
Mobile Phone
  1. iOS

Reputation:

If you get the Unknown CPU in About This Mac you can use the following settings according to your processor.

Use IORegistry Explorer or IOJones to check the current "cpu-type" value for your processors. You can find the value by clicking the CPU0@0 like shown in the picture below:
01.png


I have an Intel Core i7 6700K so the value is 0507.



For Core i3 Series you can set the CPU type to:
0x0309 = Core i3
02.png

For Core i5 series you can set the CPU type to:

0x0407
0x0601 or 0x0605 (to be more accurate) = Intel Core i5
03.png


For Core i7 Series you can set the CPU type to:

0x0701 or 0x0705 (to be more accurate) = Intel Core i7
You can also try 0x0507 if the values above didn't work.
05.png

For Xeon Series you can set the CPU type to:
0x0505 Dual-Core Intel Xeon
0x0510 Quad-Core Intel Xeon
0x05A5 Quad-Core Intel Xeon
Intel 5960X 8-Core Intel Xeon E5 0x0a01 (Thanks to nmano)
 

Attachments

  • 04.png
    04.png
    146.4 KB · Views: 520
  • 03.png
    03.png
    146.5 KB · Views: 505
  • Like
Reactions: EliteMacx86

EliteMacx86

Administrator
Staff member
Joined
Jul 22, 2018
Motherboard
GIGABYTE Z370 AROUS GAMING 3
CPU
Intel Core i9 9900K
Graphics
2xAMD RX 580 8GB
OS X/macOS
11.0.x
Bootloader
  1. OpenCore
Mac
  1. MacBook Pro
Mobile Phone
  1. Android
  2. iOS

Reputation:

If you get the Unknown CPU in About This Mac you can use the following settings according to your processor.

Use IORegistry Explorer or IOJones to check the current "cpu-type" value for your processors. You can find the value by clicking the CPU0@0 like shown in the picture below:


I have an Intel Core i7 6700K so the value is 0507.



For Core i3 Series you can set the CPU type to:
0x0309 = Core i3
View attachment 310
For Core i5 series you can set the CPU type to:

0x0407
0x0601 or 0x0605 (to be more accurate) = Intel Core i5
View attachment 313

For Core i7 Series you can set the CPU type to:

0x0701 or 0x0705 (to be more accurate) = Intel Core i7
You can also try 0x0507 if the values above didn't work.

For Xeon Series you can set the CPU type to:
0x0505 Dual-Core Intel Xeon
0x0510 Quad-Core Intel Xeon
0x05A5 Quad-Core Intel Xeon
Intel 5960X 8-Core Intel Xeon E5 0x0a01 (Thanks to nmano)
Better than editing the AppleSystemInfo.strings
 
  • Like
Reactions: Cyberdevs

Cyberdevs

Supervisor
Staff member
Joined
Aug 29, 2018
Motherboard
GA-Z170X-Gaming 5
CPU
Intel Core i7 6700K
Graphics
AMD Radeon Pro 580
OS X/macOS
10.15.x
Bootloader
  1. Clover (UEFI)
  2. OpenCore
Mobile Phone
  1. iOS

Reputation:

Yes this method is much easier.
 
  • Like
Reactions: EliteMacx86
Similar threads

Similar threads

Trending Threads

Latest posts

Forum statistics

Threads
456
Messages
4,217
Members
3,963
Latest member
Gabik