Thats the setup I am using for El Capitan. Works for my HP 6300 and HP 8300 computers which use basically the same Motherboard. Everything works except for onboard serial port and onboard display port which I have not tried yet. As I use an Nvidia GT 610 graphics card with dual monitor displays ( Two 1080p TV's via HDMI ). For macOS Sierra you will have to use an Nvidia GT 630 / 710 / 740 / 750ti graphics card.
I know the USB 3.0 ports are working faster than my USB 2.0 ports. I have tested them. I did not record the black magic speed test score. If they are setup for optimal performance I am not sure. I will have to do a comparison with my Macbook Pro USB 3.0 ports. Ethernet works fine and is stable. Link speed is gigabit. I am using AppleIntelE1000e.kext right now and it is working fine.
My El Capitan build is very stable and everything works.
I have mine setup with 16gb. of ram and dual boot El Capitan / MS-Windows-10 on two 120gb. SSD's. One for each operating system. I am also using a Sound Blaster Audigy 2zs sound card for 7.2 Surround sound via the toslink optical cable and 7.2 AV receiver. My sabrent SD card reader work too. Broadcom bcm94360cd Wifi-ac / bluetooth card works vanilla. Using a logitech K750 wireless solar powered keyboard with M325 wireless mouse. Which works great for dual boot systems. All the special Keys work. 16gb of ram appears to be enough as the CPU get saturated before you can use up more ram. Even though these computers can support up to 32gb. of DDR3 12800 ram. Internal LG DVD and LG Blu-ray burners also work vanilla.
My HP 6300 is more stable and performs better with El Capitan than it does running Windows-10
El Capitan appears to be handling the hardware better. CPU and Memory management is very good with El Capitan.
Apps run smoothly in El Capitan.
I can say enough for these HP 6300 and 8300 MT / SFF computers they work great with OS-X, MS-Windows, Oracle Solaris, Linux, FreeeBSD, RedHat, SUSE, etc. For the price of a refurbished computer you get allot to do with. I paid about $150 for my Intel-i5 HP computer. Obviously the Intel-i7 build is a faster computer. My Geekbench score for the HP 8300 with Intel-i5 is about 9,800 multicore. An Intel-i7 will get you about 12,000 multicore. Not bad for an Ivy bridge CPU. The Skylake CPU will do a little better but does not justify the price difference and compatibility and easy of installation when compared to Ivy bridge builds.
I am using El Capitan right now as I am going to wait for the dust to settle before I upgrade to macOS Sierra.
too many problems with macOS Sierra right now. El Capitan build works very good and is very stable.
I have never had it crash or hang or lockup. It works flawlessly. I am using Mac 14,2 System ID. in Clover boot loader.
The only drawback I have had with these computers is that I have had two motherboards go bad on me already for no reason. I am using the latest bios version 3.02. I contacted HP and it cost $350 for a NEW motherboard. Luckily you can purchase used motherboards on eBay for about $35
Okay, I just checked and my USB 3.0 ports are working on the HP 6300 / 8300
Using Black magic app.
My Macbook Pro 13" USB 3.0 speed test score was 53mb/s write , and 67mb/s read
My HP 6300 / 8300 Hack USB 3.0 speed test score was 54mb/s write and 69mb/s read
My HP 6300 / 8300 Hack USB 2.0 speed test score was 29mb/s write and 36mb/s read
My HP 6300 / 8300 Win-10 USB 3.0 speed test score was 9mb/s write and 83mb/s read
This was performed using a Kinston Data Traveler R30 , 32gb. USB 3.0 flash drive.
https://www.amazon.com/dp/B008BSIJM4/?tag=tonymacx86com-20
ie=UTF8&qid=1475579303&sr=8-137&keywords=kingston+usb+3.0+flash+drive
See if you can improve on these USB bench mark scores ?
I know it is not USB 3.1
USB 3.0 scores varied greatly between Windows-10 and El Capitan.
Here is some info on the hardware.
See what you can find out and if you know of better kexts to use for this hardware.
View attachment 213848
View attachment 213849
Attached is my EFI zipped up.
As for a Clean install just follow the TonyMac USB install guide. Use GUID and UEFI methods.
Multibeast Non-DTST, UEFI mode, Clover Mac System ID 14.2 ,
Create your USB install drive.
Install Clover boot loader on your Install USB flash drive
mount and edit EFI partition on USB flash drive or just replace your EFI folder with mine.
Post install is to use DPCImanger to copy 3 kexts to /system/library/extentions/
For onboard audio follow my instructions on installing voodooHDA
reboot
Delete appleHPET.kexts from
rebuild cache using DPCImanager
reboot
Then edit the SMbios section of the Clover config.plist file for iMessage / Facetime fix.
reboot