Thinkpad P51 High Sierra

Feature set source: http://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad%20P51/ThinkPad_P51_Platform_Specifications.pdf

Hardware:

Category	Element	Compatibility	Notes
CPU	i7-7700HQ	FULL	Native power management works correctly, as per: https://www.tonymacx86.com/threads/guide-native-power-management-for-laptops.175801/
GPU	HD630	FULL	Same as above. Full hardware acceleration.
	NVIDIA M1200	NO:DISABLED	Disabled as per: https://www.tonymacx86.com/threads/guide-disabling-discrete-graphics-in-dual-gpu-laptops.163772/ UPDATE: it seems it's possible to have both HD630 and Nvidia GPU running on macOS https://www.tonymacx86.com/threads/several-issues-getting-high-sierra-working-laptop.253386/#post-1759621 because of the particular configuration of this device, since it's possible form bios to run discrete graphics only and also because external monitors run through the Nvidia GPU and never through intel integrated GPU. It's rare for laptops but my guess is that it's possible on this device and technically would be like having a desktop with a dedicated GPU. UPDATE #2: Check #10
MEMORY	1x16GB	FULL
DISPLAY	4K	FULL
STORAGE	Samsung NVMe 256GB	FULL
ETHERNET	Intel I219-V	FULL	https://www.tonymacx86.com/threads/intel-i219-ethernet-drivers-for-skylake-100-series-motherboards-testing.180995/
WLAN	BCM94352Z	FULL
BLUETOOTH	BCM94352Z	FULL	Small issue with Bluetooth after wake (needs more investigation)
EXPRESS CARD		NO	Needs to be disabled for power consumption reasons through ACPI SSDT patches
SD READER	Realtek RTS525A	NO	Driver in the works https://www.insanelymac.com/forum/topic/321080-sineteks-driver-for-realtek-rtsx-sdhc-card-readers/, until the driver is 100% complete and bugfree this component will be disabled for power consumption reasons
PORTS	4xUSB3.1 Gen 1 (3.0)	FULL	Correctly setup through USBInjectAll.kext + custom SSDT + power injection
	Dock	FULL	Correctly setup through USBInjectAll.kext + custom SSDT + power injection
	1xUSB C (Thunderbolt)	YES	Needs to be correctly tested and setup as above. Thunderbolt could work but I don't have a device to test (https://www.tonymacx86.com/threads/guide-dell-xps-15-9560-4k-touch-1tb-ssd-32gb-ram-100-adobergb.224486/). Sadly, VGA/HDMI through type C will never work since that too is connected to Nvidia.
	HDMI 1.4b	NO:DISABLED	Since Nvidia is disabled, this port connected to it can't work
	Mini Displayport 1.2a	NO:DISABLED	Since Nvidia is disabled, this port connected to it can't work
CAMERA		FULL
AUDIO	ALC3268 (Speakers + Internal Mic + Headphone/Mic Combo)	FULL	AppleALC.kect + Layout #29 as per: https://www.reddit.com/r/hackintosh/comments/4e23w6/guide_native_audio_with_clover_applealckext/
KEYBOARD	Non backlit keyboard	YES	Some keys need to be fixed/setup with SSDT patches, especially leds
ULTRANAV	Trackpoint	YES	Needs to be fixed: movement is not smooth (it's blocky/jumpy). Also, center trackpoint button should be fixed since it's imprecise.
	Touchpad	YES	See if it is possible to add more gestures
FP READER		NO:DISABLED	Disabled through USBInjectAll.kext + custom SSDT since not used, to preserve battery
COLOR CALIBRATOR		NO:DISABLED	Disabled through USBInjectAll.kext + custom SSDT since not used, to preserve battery

Software:

Feature	Compatibility	Notes
Sleep + Wake	YES	Bluetooth not working after wake
Battery Status	FULL	https://www.tonymacx86.com/threads/guide-how-to-patch-dsdt-for-working-battery-status.116102/ (battery charge remaining reported correctly, but system percentage is wrong; need to see if it's possible to solve, maybe it needs a simple calibration)
Brightness Control	FULL	https://www.tonymacx86.com/threads/guide-laptop-backlight-control-using-applebacklightinjector-kext.218222/
App Store	FULL
iTunes	FULL
iMessage	YES	Requires new serial number. https://www.tonymacx86.com/threads/an-idiots-guide-to-imessage.196827/
Siri	YES	Requires new serial number. See link above.
Facetime	YES	Requires new serial number. See link above.

Guide:

1. MOST IMPORTANT: https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/
2. Rest of the guide is under construction. Also waiting to reach complete compatibility.

Benchmarks & Optimizations:

I've run some benchmarks and the results are slightly better than on Windows, since OSX has less rogue processes eating CPU computational power:

CPU:

• Cinebench: 730
• Geekbench 4: SC: 4611, MC: 13317 (I have single channel ram which means lower memory bandwidth and lower multicore score in this particular benchmark) https://browser.geekbench.com/v4/cpu/8700946

Battery:

Following the Notebookcheck battery test (example: https://www.notebookcheck.net/Apple-MacBook-Pro-15-2017-2-8-GHz-555-Laptop-Review.230096.0.html) my P51 got 9 hours of usage on the Big Buck Bunny h.264 1080p test at 150 nits (50% of the P51 4K brightness) in airplane mode. This score is slightly better than the Macbook Pro 15 2017 since the P51 has a bigger battery, but also has a display with 50% more pixels, so the advantage over the Macbook Pro is pretty much canceled. Battery should improve significantly once USB injection is correctly adapted to our system. Until now USB ports work, but not optimally. Some components, like the X-Rite calibrator, the FP scanner, the SD card reader, the Express Card slot are always on and consume power, so they will be disabled. Objective is to increase battery time of the test above from 9+ hours to about 10+ hours if possible. Custom battery thresholds work through SSDT patching!

Optimizations:

With the use of VoltageShift (https://github.com/sicreative/VoltageShift) I was able to undervolt the i7-7700HQ and lower max temperatures by 10°C and package power by about 10W. Since the temperature is overall lower, the fans spin less and there is less noise. Another tool similar to VoltageShift is Volta (http://volta.garymathews.com/) but it's a paid program. Another optimization, which currently works, is complete fan control. Finally, it is also possible to set custom battery thresholds!